chore(vendor): add anyhow crate

2026-09-17 14:13:23 -04:00
parent 7a3a3d6b90
commit 37539682d4
454 changed files with 8906 additions and 1468 deletions
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -52,6 +52,12 @@ dependencies = [
 "windows-sys",
 ]

+[[package]]
+name = "anyhow"
+version = "1.0.104"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "330a5ed07fa54e4702c9d6c4174f74427fc0ef6e214bbd677ae50a5099946470"
+
 [[package]]
 name = "ariadne"
 version = "0.1.0"
@@ -226,9 +232,9 @@ dependencies = [

 [[package]]
 name = "unicode-ident"
-version = "1.0.25"
+version = "1.0.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab72a15cf68d77cb0987d3684aa8a45c5ef827e8cb49ee2f30bfd7ba2feb519f"
+checksum = "d245f478577f809a851594d02313b640fb437e0bb33866753cff937863096954"

 [[package]]
 name = "utf8parse"
@@ -255,6 +261,7 @@ dependencies = [
 name = "xatu"
 version = "0.1.0"
 dependencies = [
+ "anyhow",
 "clap",
 "monorepo",
 ]
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,6 +8,7 @@ members = [
 resolver = "3"

 [workspace.dependencies]
+anyhow = "1.0"
 clap = "4"
 monorepo = { path = "src/monorepo" }
 serde = "1.0"
--- a/src/xatu/Cargo.toml
+++ b/src/xatu/Cargo.toml
@@ -11,5 +11,6 @@ name = "xatu"
 path = "xatu_main.rs"

 [dependencies]
+anyhow = { workspace = true }
 clap = { workspace = true, features = ["derive"] }
 monorepo = { workspace = true }
--- a/third_party/crates/BUILD.bazel
+++ b/third_party/crates/BUILD.bazel
@@ -32,14 +32,26 @@ filegroup(

 # Workspace Member Dependencies
 alias(
-    name = "clap-4.6.6",
-    actual = "//third_party/crates/clap-4.6.6:clap",
+    name = "anyhow-1.0.104",
+    actual = "//third_party/crates/anyhow-1.0.104:anyhow",
+    tags = ["manual"],
+)
+
+alias(
+    name = "anyhow",
+    actual = "//third_party/crates/anyhow-1.0.104:anyhow",
+    tags = ["manual"],
+)
+
+alias(
+    name = "clap-4.6.7",
+    actual = "//third_party/crates/clap-4.6.7:clap",
    tags = ["manual"],
 )

 alias(
    name = "clap",
-    actual = "//third_party/crates/clap-4.6.6:clap",
+    actual = "//third_party/crates/clap-4.6.7:clap",
    tags = ["manual"],
 )

@@ -55,18 +67,6 @@ alias(
    tags = ["manual"],
 )

-alias(
-    name = "rowan-0.16.1",
-    actual = "//third_party/crates/rowan-0.16.1:rowan",
-    tags = ["manual"],
-)
-
-alias(
-    name = "rowan",
-    actual = "//third_party/crates/rowan-0.16.1:rowan",
-    tags = ["manual"],
-)
-
 alias(
    name = "serde-1.0.229",
    actual = "//third_party/crates/serde-1.0.229:serde",
--- a/third_party/crates/anyhow-1.0.104/.cargo-checksum.json
+++ b/third_party/crates/anyhow-1.0.104/.cargo-checksum.json
@@ -0,0 +1 @@
+{"$comment":"This file only protects against accidental modifications. It is not a security mechanism and does not protect against malicious changes.","files":{".cargo_vcs_info.json":"9f5691d9965b8418415cfe8872a667089542a23a1d746bad08476ccda5e6269c",".github/FUNDING.yml":"b017158736b3c9751a2d21edfce7fe61c8954e2fced8da8dd3013c2f3e295bd9",".github/workflows/ci.yml":"40e9434834e8ba84207ef6a401da6b154fa4220a4847230284d6aae63d8a39ac","Cargo.lock":"c7b6dd9adcad0b26ce812afdb8539e1d93994a0735a90eb0dd7ce8535e3e7ffa","Cargo.toml":"249789761ff37004dda628765f0c9e60a61fa43cbbd2d364789dca0c789eeb59","Cargo.toml.orig":"1b03bd9d21f63835f0449cf1456e6143a15efd6b7803bc5b7787643db62b6f53","LICENSE-APACHE":"62c7a1e35f56406896d7aa7ca52d0cc0d272ac022b5d2796e7d6905db8a3636a","LICENSE-MIT":"23f18e03dc49df91622fe2a76176497404e46ced8a715d9d2b67a7446571cca3","README.md":"86f5b88c45b2b9b7eefa0ad66c11918a607319cad683f01123ff38db68b4a49b","build.rs":"89d1baedcff59822ed692d3a33f131c211a213bdec33c83f68b54110d9c64223","rust-toolchain.toml":"6bbb61302978c736b2da03e4fb40e3beab908f85d533ab46fd541e637b5f3e0f","src/backtrace.rs":"621ec5d9e2f31883d0384ae00fc536d1ea359da989d2e0d1be1ba03482c8f920","src/chain.rs":"85af447405f075633fab186b7f1c94d7f33a36474f239c50a961b2d6197d5426","src/context.rs":"8b106e43df7a66fbc3e85b87a4d7f8a780d43d3ee0cd1ae86c571950ecf07d13","src/ensure.rs":"709524741c8f9365e01cb36fc2349a8724513de02cf9e253809a93af8d6a7b6e","src/error.rs":"2a78ee4e5f8d6b4476c761f77473362b9ed12f5402e4701001e7d04d628ba030","src/fmt.rs":"2cca8c7f3cab636fdb17433ca2b1fda0e8d28bb20d4647b87c991dacd8f06cdf","src/kind.rs":"ddcabf15b3b47a4ef16ed361c45cc0cc82e7be90622995ff6c04b3fec78bb04f","src/lib.rs":"ea7f436f6bf4b356ff30ec922b50b40ead0ade28b123341a8de7f310311fd44c","src/macros.rs":"696e6a8aac614525a29697aedc7561e98beccf3d43aed3ada1cc93daa99da8ba","src/nightly.rs":"1c0aeadfcdbe22f8f807b185dec1a7448c378bddb37689714944b60473b58049","src/ptr.rs":"a114639d26f4feca7e186106342334cdf2e2176f892149aa331ace72e5d81410","src/wrapper.rs":"079218e1d8c9374f52311b1c7971f7fbdeba4d7af1b0749c0d535010f1232697","tests/common/mod.rs":"f9088c2d7afafa64ff730b629272045b776bfafc2f5957508242da630635f2e1","tests/compiletest.rs":"4e381aa8ca3eabb7ac14d1e0c3700b3223e47640547a6988cfa13ad68255f60f","tests/drop/mod.rs":"08c3e553c1cc0d2dbd936fc45f4b5b1105057186affd6865e8d261e05f0f0646","tests/test_autotrait.rs":"ba9bc18416115cb48fd08675a3e7fc89584de7926dad6b2be6645dc13d5931df","tests/test_backtrace.rs":"60afdd7ee5850dc22625ff486fe41c47fd322db874a93c4871ddfed2bf603930","tests/test_boxed.rs":"6b26db0e2eb72afe9af7352ea820837aab90f8d486294616dd5dc34c1b94038c","tests/test_chain.rs":"3a8a8d7569913bd98c0e27c69d0bda35101e7fde7c056ed57cdd8ed018e4cbcb","tests/test_context.rs":"a4cb7d9a6d488d902eb5ac516d2b5e4135f46caaa2d151580ed9ba83c2a90b57","tests/test_convert.rs":"7e7a8b4772a427a911014ac4d1083f9519000e786177f898808980dd9bdfde61","tests/test_downcast.rs":"797e69a72d125758c4c4897e5dc776d549d52cc9a6a633e0a33193f588a62b88","tests/test_ensure.rs":"6ef8823153d6aba31dda8438b9e51984e6b7377d585addbaf87162b39d733cd9","tests/test_ffi.rs":"c6e6bf39e6b2cf9aacea12e3e4da4e1e1edb7fc906d231e5baf45812a08de3c4","tests/test_fmt.rs":"0e49b48f08e4faaf03e2f202e1efc5250018876c4e1b01b8379d7a38ae8df870","tests/test_macros.rs":"3eb6ec9024cf8812da48de35b733d5a69ed942907fb4e6c67ec471cd4bcef562","tests/test_repr.rs":"034dee888abd08741e11ac2e95ef4fcb2ab3943d0a76e8e976db404658e1a252","tests/test_source.rs":"b80723cf635a4f8c4df21891b34bfab9ed2b2aa407e7a2f826d24e334cd5f88e","tests/ui/chained-comparison.rs":"6504b03d95b5acc232a7f4defc9f343b2be6733bf475fa0992e8e6545b912bd4","tests/ui/chained-comparison.stderr":"7f1d0a8c251b0ede2d30b3087ec157fc660945c97a642c4a5acf5a14ec58de34","tests/ui/empty-ensure.rs":"ab5bf37c846a0d689f26ce9257a27228411ed64154f9c950f1602d88a355d94b","tests/ui/empty-ensure.stderr":"315782f5f4246290fe190e3767b22c3dcaffaabc19c5ace0373537d53e765278","tests/ui/ensure-nonbool.rs":"7e57cb93fbcd82959b36586ed6bd2ad978b051fe5facd5274651fde6b1600905","tests/ui/ensure-nonbool.stderr":"e3dfbaedd66fdfc524f8462305760c7978c4268ca7e1cd872d7ecde5d3b455bd","tests/ui/must-use.rs":"fb59860b43f673bf4a430a6036ba463e95028844d8dd4243cfe5ebc7f2be582f","tests/ui/must-use.stderr":"8b1cb7fca632396a22bb3a642f2df3ab62b3e9a87951e20fa40bdd548d002162","tests/ui/no-impl.rs":"fab6cbf2f6ea510b86f567dfb3b7c31250a9fd71ae5d110dbb9188be569ec593","tests/ui/no-impl.stderr":"c472de95483aa234728c7f57039c88fc3456892838329976a75cd167c3c172c9","tests/ui/temporary-value.rs":"4dcc96271b2403e6372cf4cfc813445e5ce4365fc6e156b6bc38274098499a70","tests/ui/temporary-value.stderr":"7f99cd914d2d423d77274e1b859b5ad151cde8224e42687e50622c26118fd47f","tests/ui/wrong-interpolation.rs":"9c44d4674c2dccd27b9dedd03341346ec02d993b41793ee89b5755202e7e367e","tests/ui/wrong-interpolation.stderr":"301e60e2eb9401782c7dc0b3580613a4cb2aafd4cc8065734a630a62e1161aa5"},"package":"330a5ed07fa54e4702c9d6c4174f74427fc0ef6e214bbd677ae50a5099946470"}
--- a/third_party/crates/anyhow-1.0.104/.cargo_vcs_info.json
+++ b/third_party/crates/anyhow-1.0.104/.cargo_vcs_info.json
@@ -0,0 +1,6 @@
+{
+  "git": {
+    "sha1": "1dbe1862aae650423e3361fbd20b7d17c5109cc3"
+  },
+  "path_in_vcs": ""
+}
--- a/third_party/crates/unicode-ident-1.0.24/.github/FUNDING.yml
+++ b/third_party/crates/unicode-ident-1.0.24/.github/FUNDING.yml
--- a/third_party/crates/anyhow-1.0.104/.github/workflows/ci.yml
+++ b/third_party/crates/anyhow-1.0.104/.github/workflows/ci.yml
@@ -0,0 +1,146 @@
+name: CI
+
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+  schedule: [cron: "40 1 * * *"]
+
+permissions:
+  contents: read
+
+env:
+  RUSTFLAGS: -Dwarnings
+
+jobs:
+  pre_ci:
+    uses: dtolnay/.github/.github/workflows/pre_ci.yml@master
+
+  test:
+    name: Rust ${{matrix.rust}}
+    needs: pre_ci
+    if: needs.pre_ci.outputs.continue
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        rust: [nightly, beta, stable, 1.85.0]
+    timeout-minutes: 45
+    steps:
+      - uses: actions/checkout@v7
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{matrix.rust}}
+          components: rust-src
+      - name: Enable type layout randomization
+        run: echo RUSTFLAGS=${RUSTFLAGS}\ -Zrandomize-layout >> $GITHUB_ENV
+        if: matrix.rust == 'nightly'
+      - name: Enable nightly-only tests
+        run: echo RUSTFLAGS=${RUSTFLAGS}\ --cfg=anyhow_nightly_testing >> $GITHUB_ENV
+        if: matrix.rust == 'nightly'
+      - run: cargo test
+      - run: cargo check --no-default-features
+      - run: cargo check
+      - uses: actions/upload-artifact@v7
+        if: matrix.rust == 'nightly' && always()
+        with:
+          name: Cargo.lock
+          path: Cargo.lock
+        continue-on-error: true
+
+  build:
+    name: Rust ${{matrix.rust}}
+    needs: pre_ci
+    if: needs.pre_ci.outputs.continue
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        rust: [1.68.0]
+    timeout-minutes: 45
+    steps:
+      - uses: actions/checkout@v7
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{matrix.rust}}
+          components: rust-src
+      - run: cargo check --manifest-path tests/crate/Cargo.toml
+      - run: cargo check --manifest-path tests/crate/Cargo.toml --no-default-features
+
+  minimal:
+    name: Minimal versions
+    needs: pre_ci
+    if: needs.pre_ci.outputs.continue
+    runs-on: ubuntu-latest
+    timeout-minutes: 45
+    steps:
+      - uses: actions/checkout@v7
+      - uses: dtolnay/rust-toolchain@nightly
+      - run: cargo generate-lockfile -Z minimal-versions
+      - run: cargo check --locked
+
+  windows:
+    name: Windows
+    needs: pre_ci
+    if: needs.pre_ci.outputs.continue
+    runs-on: windows-latest
+    timeout-minutes: 45
+    steps:
+      - uses: actions/checkout@v7
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rust-src
+      - run: cargo check
+
+  doc:
+    name: Documentation
+    needs: pre_ci
+    if: needs.pre_ci.outputs.continue
+    runs-on: ubuntu-latest
+    timeout-minutes: 45
+    env:
+      RUSTDOCFLAGS: -Dwarnings
+    steps:
+      - uses: actions/checkout@v7
+      - uses: dtolnay/rust-toolchain@nightly
+        with:
+          components: rust-src
+      - uses: dtolnay/install@cargo-docs-rs
+      - run: cargo docs-rs
+
+  clippy:
+    name: Clippy
+    runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request'
+    timeout-minutes: 45
+    steps:
+      - uses: actions/checkout@v7
+      - uses: dtolnay/rust-toolchain@nightly
+        with:
+          components: clippy, rust-src
+      - run: cargo clippy --tests -- -Dclippy::all -Dclippy::pedantic
+
+  miri:
+    name: Miri
+    needs: pre_ci
+    if: needs.pre_ci.outputs.continue
+    runs-on: ubuntu-latest
+    timeout-minutes: 45
+    steps:
+      - uses: actions/checkout@v7
+      - uses: dtolnay/rust-toolchain@miri
+      - run: cargo miri setup
+      - run: cargo miri test
+        env:
+          MIRIFLAGS: -Zmiri-strict-provenance
+
+  outdated:
+    name: Outdated
+    runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request'
+    timeout-minutes: 45
+    steps:
+      - uses: actions/checkout@v7
+      - uses: dtolnay/rust-toolchain@stable
+      - uses: dtolnay/install@cargo-outdated
+      - run: cargo outdated --workspace --exit-code 1
--- a/third_party/crates/anyhow-1.0.104/BUILD.bazel
+++ b/third_party/crates/anyhow-1.0.104/BUILD.bazel
@@ -0,0 +1,187 @@
+###############################################################################
+# @generated
+# DO NOT MODIFY: This file is auto-generated by a crate_universe tool. To
+# regenerate this file, run the following:
+#
+#     bazel run @@//third_party:vendor_crates
+###############################################################################
+
+load(
+    "@rules_rust//cargo:defs.bzl",
+    "cargo_build_script",
+    "cargo_toml_env_vars",
+)
+load("@rules_rust//rust:defs.bzl", "rust_library")
+
+package(default_visibility = ["//visibility:public"])
+
+cargo_toml_env_vars(
+    name = "cargo_toml_env_vars",
+    src = "Cargo.toml",
+)
+
+rust_library(
+    name = "anyhow",
+    srcs = glob(
+        include = ["**/*.rs"],
+        allow_empty = False,
+    ),
+    compile_data = glob(
+        include = ["**"],
+        allow_empty = True,
+        exclude = [
+            "**/* *",
+            ".tmp_git_root/**/*",
+            "BUILD",
+            "BUILD.bazel",
+            "WORKSPACE",
+            "WORKSPACE.bazel",
+        ],
+    ),
+    crate_features = [
+        "default",
+        "std",
+    ],
+    crate_root = "src/lib.rs",
+    edition = "2021",
+    rustc_env_files = [
+        ":cargo_toml_env_vars",
+    ],
+    rustc_flags = [
+        "--cap-lints=allow",
+    ],
+    tags = [
+        "cargo-bazel",
+        "crate-name=anyhow",
+        "manual",
+        "noclippy",
+        "norustfmt",
+    ],
+    target_compatible_with = select({
+        "@rules_rust//rust/platform:aarch64-apple-darwin": [],
+        "@rules_rust//rust/platform:aarch64-apple-ios": [],
+        "@rules_rust//rust/platform:aarch64-apple-ios-macabi": [],
+        "@rules_rust//rust/platform:aarch64-apple-ios-sim": [],
+        "@rules_rust//rust/platform:aarch64-linux-android": [],
+        "@rules_rust//rust/platform:aarch64-pc-windows-msvc": [],
+        "@rules_rust//rust/platform:aarch64-unknown-fuchsia": [],
+        "@rules_rust//rust/platform:aarch64-unknown-linux-gnu": [],
+        "@rules_rust//rust/platform:aarch64-unknown-nixos-gnu": [],
+        "@rules_rust//rust/platform:aarch64-unknown-none": [],
+        "@rules_rust//rust/platform:aarch64-unknown-nto-qnx710": [],
+        "@rules_rust//rust/platform:aarch64-unknown-uefi": [],
+        "@rules_rust//rust/platform:arm-unknown-linux-gnueabi": [],
+        "@rules_rust//rust/platform:arm-unknown-linux-musleabi": [],
+        "@rules_rust//rust/platform:armv7-linux-androideabi": [],
+        "@rules_rust//rust/platform:armv7-unknown-linux-gnueabi": [],
+        "@rules_rust//rust/platform:i686-apple-darwin": [],
+        "@rules_rust//rust/platform:i686-linux-android": [],
+        "@rules_rust//rust/platform:i686-pc-windows-msvc": [],
+        "@rules_rust//rust/platform:i686-unknown-freebsd": [],
+        "@rules_rust//rust/platform:i686-unknown-linux-gnu": [],
+        "@rules_rust//rust/platform:loongarch64-unknown-linux-gnu": [],
+        "@rules_rust//rust/platform:mips-unknown-linux-gnu": [],
+        "@rules_rust//rust/platform:powerpc-unknown-linux-gnu": [],
+        "@rules_rust//rust/platform:riscv32imac-unknown-none-elf": [],
+        "@rules_rust//rust/platform:riscv32imc-unknown-none-elf": [],
+        "@rules_rust//rust/platform:riscv64gc-unknown-linux-gnu": [],
+        "@rules_rust//rust/platform:riscv64gc-unknown-none-elf": [],
+        "@rules_rust//rust/platform:s390x-unknown-linux-gnu": [],
+        "@rules_rust//rust/platform:sparc64-unknown-linux-gnu": [],
+        "@rules_rust//rust/platform:sparc64-unknown-netbsd": [],
+        "@rules_rust//rust/platform:sparc64-unknown-openbsd": [],
+        "@rules_rust//rust/platform:thumbv6m-none-eabi": [],
+        "@rules_rust//rust/platform:thumbv7em-none-eabi": [],
+        "@rules_rust//rust/platform:thumbv7em-none-eabihf": [],
+        "@rules_rust//rust/platform:thumbv7m-none-eabi": [],
+        "@rules_rust//rust/platform:thumbv8m.main-none-eabi": [],
+        "@rules_rust//rust/platform:thumbv8m.main-none-eabihf": [],
+        "@rules_rust//rust/platform:wasm32-unknown-emscripten": [],
+        "@rules_rust//rust/platform:wasm32-unknown-unknown": [],
+        "@rules_rust//rust/platform:wasm32-wasip1": [],
+        "@rules_rust//rust/platform:wasm32-wasip1-threads": [],
+        "@rules_rust//rust/platform:wasm32-wasip2": [],
+        "@rules_rust//rust/platform:x86_64-apple-darwin": [],
+        "@rules_rust//rust/platform:x86_64-apple-ios": [],
+        "@rules_rust//rust/platform:x86_64-apple-ios-macabi": [],
+        "@rules_rust//rust/platform:x86_64-linux-android": [],
+        "@rules_rust//rust/platform:x86_64-pc-windows-msvc": [],
+        "@rules_rust//rust/platform:x86_64-unknown-freebsd": [],
+        "@rules_rust//rust/platform:x86_64-unknown-fuchsia": [],
+        "@rules_rust//rust/platform:x86_64-unknown-linux-gnu": [],
+        "@rules_rust//rust/platform:x86_64-unknown-nixos-gnu": [],
+        "@rules_rust//rust/platform:x86_64-unknown-none": [],
+        "@rules_rust//rust/platform:x86_64-unknown-uefi": [],
+        "//conditions:default": ["@platforms//:incompatible"],
+    }),
+    version = "1.0.104",
+    deps = [
+        ":build_script_build",
+    ],
+)
+
+cargo_build_script(
+    name = "_bs",
+    srcs = glob(
+        include = ["**/*.rs"],
+        allow_empty = False,
+    ),
+    build_script_env_files = [
+        ":cargo_toml_env_vars",
+    ],
+    compile_data = glob(
+        include = ["**"],
+        allow_empty = True,
+        exclude = [
+            "**/* *",
+            "**/*.rs",
+            ".tmp_git_root/**/*",
+            "BUILD",
+            "BUILD.bazel",
+            "WORKSPACE",
+            "WORKSPACE.bazel",
+        ],
+    ),
+    crate_features = [
+        "default",
+        "std",
+    ],
+    crate_name = "build_script_build",
+    crate_root = "build.rs",
+    data = glob(
+        include = ["**"],
+        allow_empty = True,
+        exclude = [
+            "**/* *",
+            ".tmp_git_root/**/*",
+            "BUILD",
+            "BUILD.bazel",
+            "WORKSPACE",
+            "WORKSPACE.bazel",
+        ],
+    ),
+    edition = "2021",
+    emit_warnings = False,
+    pkg_name = "anyhow",
+    rustc_env_files = [
+        ":cargo_toml_env_vars",
+    ],
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+        "manual",
+        "noclippy",
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+    ],
+    version = "1.0.104",
+    visibility = ["//visibility:private"],
+)
+
+alias(
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+    actual = ":_bs",
+    tags = ["manual"],
+)
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+++ b/third_party/crates/anyhow-1.0.104/Cargo.lock
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--- a/third_party/crates/anyhow-1.0.104/Cargo.toml
+++ b/third_party/crates/anyhow-1.0.104/Cargo.toml
@@ -0,0 +1,129 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2021"
+rust-version = "1.68"
+name = "anyhow"
+version = "1.0.104"
+authors = ["David Tolnay <dtolnay@gmail.com>"]
+build = "build.rs"
+autolib = false
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
+description = "Flexible concrete Error type built on std::error::Error"
+documentation = "https://docs.rs/anyhow"
+readme = "README.md"
+keywords = [
+    "error",
+    "error-handling",
+]
+categories = [
+    "rust-patterns",
+    "no-std",
+]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/dtolnay/anyhow"
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
+rustdoc-args = [
+    "--generate-link-to-definition",
+    "--generate-macro-expansion",
+    "--extern-html-root-url=core=https://doc.rust-lang.org",
+    "--extern-html-root-url=alloc=https://doc.rust-lang.org",
+    "--extern-html-root-url=std=https://doc.rust-lang.org",
+]
+
+[features]
+backtrace = []
+default = ["std"]
+std = []
+
+[lib]
+name = "anyhow"
+path = "src/lib.rs"
+
+[[test]]
+name = "compiletest"
+path = "tests/compiletest.rs"
+
+[[test]]
+name = "test_autotrait"
+path = "tests/test_autotrait.rs"
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+
+[[test]]
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+path = "tests/test_context.rs"
+
+[[test]]
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+path = "tests/test_convert.rs"
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+
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+
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+path = "tests/test_ffi.rs"
+
+[[test]]
+name = "test_fmt"
+path = "tests/test_fmt.rs"
+
+[[test]]
+name = "test_macros"
+path = "tests/test_macros.rs"
+
+[[test]]
+name = "test_repr"
+path = "tests/test_repr.rs"
+
+[[test]]
+name = "test_source"
+path = "tests/test_source.rs"
+
+[dev-dependencies.futures]
+version = "0.3"
+default-features = false
+
+[dev-dependencies.rustversion]
+version = "1.0.6"
+
+[dev-dependencies.syn]
+version = "3"
+features = ["full"]
+
+[dev-dependencies.thiserror]
+version = "2"
+
+[dev-dependencies.trybuild]
+version = "1.0.108"
+features = ["diff"]
--- a/third_party/crates/anyhow-1.0.104/Cargo.toml.orig
+++ b/third_party/crates/anyhow-1.0.104/Cargo.toml.orig
@@ -0,0 +1,36 @@
+[package]
+name = "anyhow"
+version = "1.0.104"
+authors = ["David Tolnay <dtolnay@gmail.com>"]
+categories = ["rust-patterns", "no-std"]
+description = "Flexible concrete Error type built on std::error::Error"
+documentation = "https://docs.rs/anyhow"
+edition = "2021"
+keywords = ["error", "error-handling"]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/dtolnay/anyhow"
+rust-version = "1.68"
+
+[features]
+default = ["std"]
+std = []
+# THIS HAS NO EFFECT. This feature remains to preserve compatibility with the
+# old `backtrace` optional dependency that this crate used to have.
+backtrace = []
+
+[dev-dependencies]
+futures = { version = "0.3", default-features = false }
+rustversion = "1.0.6"
+syn = { version = "3", features = ["full"] }
+thiserror = "2"
+trybuild = { version = "1.0.108", features = ["diff"] }
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
+rustdoc-args = [
+    "--generate-link-to-definition",
+    "--generate-macro-expansion",
+    "--extern-html-root-url=core=https://doc.rust-lang.org",
+    "--extern-html-root-url=alloc=https://doc.rust-lang.org",
+    "--extern-html-root-url=std=https://doc.rust-lang.org",
+]
--- a/third_party/crates/anyhow-1.0.104/LICENSE-APACHE
+++ b/third_party/crates/anyhow-1.0.104/LICENSE-APACHE
--- a/third_party/crates/anyhow-1.0.104/LICENSE-MIT
+++ b/third_party/crates/anyhow-1.0.104/LICENSE-MIT
--- a/third_party/crates/anyhow-1.0.104/README.md
+++ b/third_party/crates/anyhow-1.0.104/README.md
@@ -0,0 +1,179 @@
+Anyhow&ensp;¯\\\_(°ペ)\_/¯
+==========================
+
+[<img alt="github" src="https://img.shields.io/badge/github-dtolnay/anyhow-8da0cb?style=for-the-badge&labelColor=555555&logo=github" height="20">](https://github.com/dtolnay/anyhow)
+[<img alt="crates.io" src="https://img.shields.io/crates/v/anyhow.svg?style=for-the-badge&color=fc8d62&logo=rust" height="20">](https://crates.io/crates/anyhow)
+[<img alt="docs.rs" src="https://img.shields.io/badge/docs.rs-anyhow-66c2a5?style=for-the-badge&labelColor=555555&logo=docs.rs" height="20">](https://docs.rs/anyhow)
+[<img alt="build status" src="https://img.shields.io/github/actions/workflow/status/dtolnay/anyhow/ci.yml?branch=master&style=for-the-badge" height="20">](https://github.com/dtolnay/anyhow/actions?query=branch%3Amaster)
+
+This library provides [`anyhow::Error`][Error], a trait object based error type
+for easy idiomatic error handling in Rust applications.
+
+[Error]: https://docs.rs/anyhow/1.0/anyhow/struct.Error.html
+
+```toml
+[dependencies]
+anyhow = "1.0"
+```
+
+<br>
+
+## Details
+
+- Use `Result<T, anyhow::Error>`, or equivalently `anyhow::Result<T>`, as the
+  return type of any fallible function.
+
+  Within the function, use `?` to easily propagate any error that implements the
+  [`std::error::Error`] trait.
+
+  ```rust
+  use anyhow::Result;
+
+  fn get_cluster_info() -> Result<ClusterMap> {
+      let config = std::fs::read_to_string("cluster.json")?;
+      let map: ClusterMap = serde_json::from_str(&config)?;
+      Ok(map)
+  }
+  ```
+
+  [`std::error::Error`]: https://doc.rust-lang.org/std/error/trait.Error.html
+
+- Attach context to help the person troubleshooting the error understand where
+  things went wrong. A low-level error like "No such file or directory" can be
+  annoying to debug without more context about what higher level step the
+  application was in the middle of.
+
+  ```rust
+  use anyhow::{Context, Result};
+
+  fn main() -> Result<()> {
+      ...
+      it.detach().context("Failed to detach the important thing")?;
+
+      let content = std::fs::read(path)
+          .with_context(|| format!("Failed to read instrs from {}", path))?;
+      ...
+  }
+  ```
+
+  ```console
+  Error: Failed to read instrs from ./path/to/instrs.json
+
+  Caused by:
+      No such file or directory (os error 2)
+  ```
+
+- Downcasting is supported and can be by value, by shared reference, or by
+  mutable reference as needed.
+
+  ```rust
+  // If the error was caused by redaction, then return a
+  // tombstone instead of the content.
+  match root_cause.downcast_ref::<DataStoreError>() {
+      Some(DataStoreError::Censored(_)) => Ok(Poll::Ready(REDACTED_CONTENT)),
+      None => Err(error),
+  }
+  ```
+
+- If using Rust &ge; 1.65, a backtrace is captured and printed with the error if
+  the underlying error type does not already provide its own. In order to see
+  backtraces, they must be enabled through the environment variables described
+  in [`std::backtrace`]:
+
+  - If you want panics and errors to both have backtraces, set
+    `RUST_BACKTRACE=1`;
+  - If you want only errors to have backtraces, set `RUST_LIB_BACKTRACE=1`;
+  - If you want only panics to have backtraces, set `RUST_BACKTRACE=1` and
+    `RUST_LIB_BACKTRACE=0`.
+
+  [`std::backtrace`]: https://doc.rust-lang.org/std/backtrace/index.html#environment-variables
+
+- Anyhow works with any error type that has an impl of `std::error::Error`,
+  including ones defined in your crate. We do not bundle a `derive(Error)` macro
+  but you can write the impls yourself or use a standalone macro like
+  [thiserror].
+
+  ```rust
+  use thiserror::Error;
+
+  #[derive(Error, Debug)]
+  pub enum FormatError {
+      #[error("Invalid header (expected {expected:?}, got {found:?})")]
+      InvalidHeader {
+          expected: String,
+          found: String,
+      },
+      #[error("Missing attribute: {0}")]
+      MissingAttribute(String),
+  }
+  ```
+
+- One-off error messages can be constructed using the `anyhow!` macro, which
+  supports string interpolation and produces an `anyhow::Error`.
+
+  ```rust
+  return Err(anyhow!("Missing attribute: {}", missing));
+  ```
+
+  A `bail!` macro is provided as a shorthand for the same early return.
+
+  ```rust
+  bail!("Missing attribute: {}", missing);
+  ```
+
+<br>
+
+## No-std support
+
+In no_std mode, almost all of the same API is available and works the same way.
+To depend on Anyhow in no_std mode, disable our default enabled "std" feature in
+Cargo.toml. A global allocator is required.
+
+```toml
+[dependencies]
+anyhow = { version = "1.0", default-features = false }
+```
+
+With versions of Rust older than 1.81, no_std mode may require an additional
+`.map_err(Error::msg)` when working with a non-Anyhow error type inside a
+function that returns Anyhow's error type, as the trait that `?`-based error
+conversions are defined by is only available in std in those old versions.
+
+<br>
+
+## Comparison to failure
+
+The `anyhow::Error` type works something like `failure::Error`, but unlike
+failure ours is built around the standard library's `std::error::Error` trait
+rather than a separate trait `failure::Fail`. The standard library has adopted
+the necessary improvements for this to be possible as part of [RFC 2504].
+
+[RFC 2504]: https://github.com/rust-lang/rfcs/blob/master/text/2504-fix-error.md
+
+<br>
+
+## Comparison to thiserror
+
+Use Anyhow if you don't care what error type your functions return, you just
+want it to be easy. This is common in application code. Use [thiserror] if you
+are a library that wants to design your own dedicated error type(s) so that on
+failures the caller gets exactly the information that you choose.
+
+[thiserror]: https://github.com/dtolnay/thiserror
+
+<br>
+
+#### License
+
+<sup>
+Licensed under either of <a href="LICENSE-APACHE">Apache License, Version
+2.0</a> or <a href="LICENSE-MIT">MIT license</a> at your option.
+</sup>
+
+<br>
+
+<sub>
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in this crate by you, as defined in the Apache-2.0 license, shall
+be dual licensed as above, without any additional terms or conditions.
+</sub>
--- a/third_party/crates/anyhow-1.0.104/build.rs
+++ b/third_party/crates/anyhow-1.0.104/build.rs
@@ -0,0 +1,194 @@
+#![allow(clippy::uninlined_format_args)]
+
+use std::env;
+use std::ffi::OsString;
+use std::fs;
+use std::io::ErrorKind;
+use std::iter;
+use std::path::Path;
+use std::process::{self, Command, Stdio};
+use std::str;
+
+fn main() {
+    if cfg!(feature = "std") {
+        println!("cargo:rerun-if-changed=src/nightly.rs");
+
+        let error_generic_member_access;
+        let consider_rustc_bootstrap;
+        if compile_probe(false) {
+            // This is a nightly or dev compiler, so it supports unstable
+            // features regardless of RUSTC_BOOTSTRAP. No need to rerun build
+            // script if RUSTC_BOOTSTRAP is changed.
+            error_generic_member_access = true;
+            consider_rustc_bootstrap = false;
+        } else if let Some(rustc_bootstrap) = env::var_os("RUSTC_BOOTSTRAP") {
+            if compile_probe(true) {
+                // This is a stable or beta compiler for which the user has set
+                // RUSTC_BOOTSTRAP to turn on unstable features. Rerun build
+                // script if they change it.
+                error_generic_member_access = true;
+                consider_rustc_bootstrap = true;
+            } else if rustc_bootstrap == "1" {
+                // This compiler does not support the generic member access API
+                // in the form that anyhow expects. No need to pay attention to
+                // RUSTC_BOOTSTRAP.
+                error_generic_member_access = false;
+                consider_rustc_bootstrap = false;
+            } else {
+                // This is a stable or beta compiler for which RUSTC_BOOTSTRAP
+                // is set to restrict the use of unstable features by this
+                // crate.
+                error_generic_member_access = false;
+                consider_rustc_bootstrap = true;
+            }
+        } else {
+            // Without RUSTC_BOOTSTRAP, this compiler does not support the
+            // generic member access API in the form that anyhow expects, but
+            // try again if the user turns on unstable features.
+            error_generic_member_access = false;
+            consider_rustc_bootstrap = true;
+        }
+
+        if error_generic_member_access {
+            println!("cargo:rustc-cfg=error_generic_member_access");
+        }
+
+        if consider_rustc_bootstrap {
+            println!("cargo:rerun-if-env-changed=RUSTC_BOOTSTRAP");
+        }
+    }
+
+    let Some(rustc) = rustc_minor_version() else {
+        return;
+    };
+
+    if rustc >= 80 {
+        println!("cargo:rustc-check-cfg=cfg(anyhow_build_probe)");
+        println!("cargo:rustc-check-cfg=cfg(anyhow_nightly_testing)");
+        println!("cargo:rustc-check-cfg=cfg(anyhow_no_clippy_format_args)");
+        println!("cargo:rustc-check-cfg=cfg(anyhow_no_core_error)");
+        println!("cargo:rustc-check-cfg=cfg(error_generic_member_access)");
+    }
+
+    if rustc < 81 {
+        // core::error::Error
+        // https://blog.rust-lang.org/2024/09/05/Rust-1.81.0.html#coreerrorerror
+        println!("cargo:rustc-cfg=anyhow_no_core_error");
+    }
+
+    if rustc < 85 {
+        // #[clippy::format_args]
+        // https://doc.rust-lang.org/1.85.1/clippy/attribs.html#clippyformat_args
+        println!("cargo:rustc-cfg=anyhow_no_clippy_format_args");
+    }
+}
+
+fn compile_probe(rustc_bootstrap: bool) -> bool {
+    if env::var_os("RUSTC_STAGE").is_some() {
+        // We are running inside rustc bootstrap. This is a highly non-standard
+        // environment with issues such as:
+        //
+        //     https://github.com/rust-lang/cargo/issues/11138
+        //     https://github.com/rust-lang/rust/issues/114839
+        //
+        // Let's just not use nightly features here.
+        return false;
+    }
+
+    let rustc = cargo_env_var("RUSTC");
+    let out_dir = cargo_env_var("OUT_DIR");
+    let out_subdir = Path::new(&out_dir).join("probe");
+    let probefile = Path::new("src").join("nightly.rs");
+
+    if let Err(err) = fs::create_dir(&out_subdir) {
+        if err.kind() != ErrorKind::AlreadyExists {
+            eprintln!("Failed to create {}: {}", out_subdir.display(), err);
+            process::exit(1);
+        }
+    }
+
+    let rustc_wrapper = env::var_os("RUSTC_WRAPPER").filter(|wrapper| !wrapper.is_empty());
+    let rustc_workspace_wrapper =
+        env::var_os("RUSTC_WORKSPACE_WRAPPER").filter(|wrapper| !wrapper.is_empty());
+    let mut rustc = rustc_wrapper
+        .into_iter()
+        .chain(rustc_workspace_wrapper)
+        .chain(iter::once(rustc));
+    let mut cmd = Command::new(rustc.next().unwrap());
+    cmd.args(rustc);
+
+    if !rustc_bootstrap {
+        cmd.env_remove("RUSTC_BOOTSTRAP");
+    }
+
+    cmd.stderr(Stdio::null())
+        .arg("--cfg=anyhow_build_probe")
+        .arg("--edition=2018")
+        .arg("--crate-name=anyhow")
+        .arg("--crate-type=lib")
+        .arg("--cap-lints=allow")
+        .arg("--emit=dep-info,metadata")
+        .arg("--out-dir")
+        .arg(&out_subdir)
+        .arg(probefile);
+
+    if let Some(target) = env::var_os("TARGET") {
+        cmd.arg("--target").arg(target);
+    }
+
+    // If Cargo wants to set RUSTFLAGS, use that.
+    if let Ok(rustflags) = env::var("CARGO_ENCODED_RUSTFLAGS") {
+        if !rustflags.is_empty() {
+            for arg in rustflags.split('\x1f') {
+                cmd.arg(arg);
+            }
+        }
+    }
+
+    let success = match cmd.status() {
+        Ok(status) => status.success(),
+        Err(_) => false,
+    };
+
+    // Clean up to avoid leaving nondeterministic absolute paths in the dep-info
+    // file in OUT_DIR, which causes nonreproducible builds in build systems
+    // that treat the entire OUT_DIR as an artifact.
+    if let Err(err) = fs::remove_dir_all(&out_subdir) {
+        // libc::ENOTEMPTY
+        // Some filesystems (NFSv3) have timing issues under load where '.nfs*'
+        // dummy files can continue to get created for a short period after the
+        // probe command completes, breaking remove_dir_all.
+        // To be replaced with ErrorKind::DirectoryNotEmpty (Rust 1.83+).
+        const ENOTEMPTY: i32 = 39;
+
+        if !(err.kind() == ErrorKind::NotFound
+            || (cfg!(target_os = "linux") && err.raw_os_error() == Some(ENOTEMPTY)))
+        {
+            eprintln!("Failed to clean up {}: {}", out_subdir.display(), err);
+            process::exit(1);
+        }
+    }
+
+    success
+}
+
+fn rustc_minor_version() -> Option<u32> {
+    let rustc = cargo_env_var("RUSTC");
+    let output = Command::new(rustc).arg("--version").output().ok()?;
+    let version = str::from_utf8(&output.stdout).ok()?;
+    let mut pieces = version.split('.');
+    if pieces.next() != Some("rustc 1") {
+        return None;
+    }
+    pieces.next()?.parse().ok()
+}
+
+fn cargo_env_var(key: &str) -> OsString {
+    env::var_os(key).unwrap_or_else(|| {
+        eprintln!(
+            "Environment variable ${} is not set during execution of build script",
+            key,
+        );
+        process::exit(1);
+    })
+}
--- a/third_party/crates/anyhow-1.0.104/rust-toolchain.toml
+++ b/third_party/crates/anyhow-1.0.104/rust-toolchain.toml
@@ -0,0 +1,2 @@
+[toolchain]
+components = ["rust-src"]
--- a/third_party/crates/anyhow-1.0.104/src/backtrace.rs
+++ b/third_party/crates/anyhow-1.0.104/src/backtrace.rs
@@ -0,0 +1,48 @@
+#[cfg(feature = "std")]
+pub(crate) use std::backtrace::Backtrace;
+
+#[cfg(not(feature = "std"))]
+pub(crate) enum Backtrace {}
+
+#[cfg(feature = "std")]
+macro_rules! backtrace {
+    () => {
+        Some(std::backtrace::Backtrace::capture())
+    };
+}
+
+#[cfg(not(feature = "std"))]
+macro_rules! backtrace {
+    () => {
+        None
+    };
+}
+
+#[cfg(error_generic_member_access)]
+macro_rules! backtrace_if_absent {
+    ($err:expr) => {
+        match $crate::nightly::request_ref_backtrace($err as &dyn core::error::Error) {
+            Some(_) => None,
+            None => backtrace!(),
+        }
+    };
+}
+
+#[cfg(all(not(error_generic_member_access), feature = "std"))]
+macro_rules! backtrace_if_absent {
+    ($err:expr) => {
+        backtrace!()
+    };
+}
+
+#[cfg(all(not(anyhow_no_core_error), not(feature = "std")))]
+macro_rules! backtrace_if_absent {
+    ($err:expr) => {
+        None
+    };
+}
+
+fn _assert_send_sync() {
+    fn assert<T: Send + Sync>() {}
+    assert::<Backtrace>();
+}
--- a/third_party/crates/anyhow-1.0.104/src/chain.rs
+++ b/third_party/crates/anyhow-1.0.104/src/chain.rs
@@ -0,0 +1,102 @@
+use self::ChainState::*;
+use crate::StdError;
+
+#[cfg(any(feature = "std", not(anyhow_no_core_error)))]
+use alloc::vec::{self, Vec};
+
+#[cfg(any(feature = "std", not(anyhow_no_core_error)))]
+pub(crate) use crate::Chain;
+
+#[cfg(all(not(feature = "std"), anyhow_no_core_error))]
+pub(crate) struct Chain<'a> {
+    state: ChainState<'a>,
+}
+
+#[derive(Clone)]
+pub(crate) enum ChainState<'a> {
+    Linked {
+        next: Option<&'a (dyn StdError + 'static)>,
+    },
+    #[cfg(any(feature = "std", not(anyhow_no_core_error)))]
+    Buffered {
+        rest: vec::IntoIter<&'a (dyn StdError + 'static)>,
+    },
+}
+
+impl<'a> Chain<'a> {
+    #[cold]
+    pub fn new(head: &'a (dyn StdError + 'static)) -> Self {
+        Chain {
+            state: ChainState::Linked { next: Some(head) },
+        }
+    }
+}
+
+impl<'a> Iterator for Chain<'a> {
+    type Item = &'a (dyn StdError + 'static);
+
+    fn next(&mut self) -> Option<Self::Item> {
+        match &mut self.state {
+            Linked { next } => {
+                let error = (*next)?;
+                *next = error.source();
+                Some(error)
+            }
+            #[cfg(any(feature = "std", not(anyhow_no_core_error)))]
+            Buffered { rest } => rest.next(),
+        }
+    }
+
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        let len = self.len();
+        (len, Some(len))
+    }
+}
+
+#[cfg(any(feature = "std", not(anyhow_no_core_error)))]
+impl DoubleEndedIterator for Chain<'_> {
+    fn next_back(&mut self) -> Option<Self::Item> {
+        match &mut self.state {
+            Linked { mut next } => {
+                let mut rest = Vec::new();
+                while let Some(cause) = next {
+                    next = cause.source();
+                    rest.push(cause);
+                }
+                let mut rest = rest.into_iter();
+                let last = rest.next_back();
+                self.state = Buffered { rest };
+                last
+            }
+            Buffered { rest } => rest.next_back(),
+        }
+    }
+}
+
+impl ExactSizeIterator for Chain<'_> {
+    fn len(&self) -> usize {
+        match &self.state {
+            Linked { mut next } => {
+                let mut len = 0;
+                while let Some(cause) = next {
+                    next = cause.source();
+                    len += 1;
+                }
+                len
+            }
+            #[cfg(any(feature = "std", not(anyhow_no_core_error)))]
+            Buffered { rest } => rest.len(),
+        }
+    }
+}
+
+#[cfg(any(feature = "std", not(anyhow_no_core_error)))]
+impl Default for Chain<'_> {
+    fn default() -> Self {
+        Chain {
+            state: ChainState::Buffered {
+                rest: Vec::new().into_iter(),
+            },
+        }
+    }
+}
--- a/third_party/crates/anyhow-1.0.104/src/context.rs
+++ b/third_party/crates/anyhow-1.0.104/src/context.rs
@@ -0,0 +1,193 @@
+use crate::error::ContextError;
+use crate::{Context, Error, StdError};
+use core::convert::Infallible;
+use core::fmt::{self, Debug, Display, Write};
+
+#[cfg(error_generic_member_access)]
+use crate::nightly::{self, Request};
+
+mod ext {
+    use super::*;
+
+    pub trait StdError {
+        fn ext_context<C>(self, context: C) -> Error
+        where
+            C: Display + Send + Sync + 'static;
+    }
+
+    #[cfg(any(feature = "std", not(anyhow_no_core_error)))]
+    impl<E> StdError for E
+    where
+        E: crate::StdError + Send + Sync + 'static,
+    {
+        fn ext_context<C>(self, context: C) -> Error
+        where
+            C: Display + Send + Sync + 'static,
+        {
+            let backtrace = backtrace_if_absent!(&self);
+            Error::construct_from_context(context, self, backtrace)
+        }
+    }
+
+    impl StdError for Error {
+        fn ext_context<C>(self, context: C) -> Error
+        where
+            C: Display + Send + Sync + 'static,
+        {
+            self.context(context)
+        }
+    }
+}
+
+impl<T, E> Context<T, E> for Result<T, E>
+where
+    E: ext::StdError + Send + Sync + 'static,
+{
+    fn context<C>(self, context: C) -> Result<T, Error>
+    where
+        C: Display + Send + Sync + 'static,
+    {
+        // Not using map_err to save 2 useless frames off the captured backtrace
+        // in ext_context.
+        match self {
+            Ok(ok) => Ok(ok),
+            Err(error) => Err(error.ext_context(context)),
+        }
+    }
+
+    fn with_context<C, F>(self, context: F) -> Result<T, Error>
+    where
+        C: Display + Send + Sync + 'static,
+        F: FnOnce() -> C,
+    {
+        match self {
+            Ok(ok) => Ok(ok),
+            Err(error) => Err(error.ext_context(context())),
+        }
+    }
+}
+
+/// ```
+/// # type T = ();
+/// #
+/// use anyhow::{Context, Result};
+///
+/// fn maybe_get() -> Option<T> {
+///     # const IGNORE: &str = stringify! {
+///     ...
+///     # };
+///     # unimplemented!()
+/// }
+///
+/// fn demo() -> Result<()> {
+///     let t = maybe_get().context("there is no T")?;
+///     # const IGNORE: &str = stringify! {
+///     ...
+///     # };
+///     # unimplemented!()
+/// }
+/// ```
+impl<T> Context<T, Infallible> for Option<T> {
+    fn context<C>(self, context: C) -> Result<T, Error>
+    where
+        C: Display + Send + Sync + 'static,
+    {
+        // Not using ok_or_else to save 2 useless frames off the captured
+        // backtrace.
+        match self {
+            Some(ok) => Ok(ok),
+            None => Err(Error::construct_from_display(context, backtrace!())),
+        }
+    }
+
+    fn with_context<C, F>(self, context: F) -> Result<T, Error>
+    where
+        C: Display + Send + Sync + 'static,
+        F: FnOnce() -> C,
+    {
+        match self {
+            Some(ok) => Ok(ok),
+            None => Err(Error::construct_from_display(context(), backtrace!())),
+        }
+    }
+}
+
+impl<C, E> Debug for ContextError<C, E>
+where
+    C: Display,
+    E: Debug,
+{
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        f.debug_struct("Error")
+            .field("context", &Quoted(&self.context))
+            .field("source", &self.error)
+            .finish()
+    }
+}
+
+impl<C, E> Display for ContextError<C, E>
+where
+    C: Display,
+{
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        Display::fmt(&self.context, f)
+    }
+}
+
+impl<C, E> StdError for ContextError<C, E>
+where
+    C: Display,
+    E: StdError + 'static,
+{
+    fn source(&self) -> Option<&(dyn StdError + 'static)> {
+        Some(&self.error)
+    }
+
+    #[cfg(error_generic_member_access)]
+    fn provide<'a>(&'a self, request: &mut Request<'a>) {
+        nightly::provide(&self.error, request);
+    }
+}
+
+impl<C> StdError for ContextError<C, Error>
+where
+    C: Display,
+{
+    fn source(&self) -> Option<&(dyn StdError + 'static)> {
+        Some(unsafe { crate::ErrorImpl::error(self.error.inner.by_ref()) })
+    }
+
+    #[cfg(error_generic_member_access)]
+    fn provide<'a>(&'a self, request: &mut Request<'a>) {
+        Error::provide(&self.error, request);
+    }
+}
+
+struct Quoted<C>(C);
+
+impl<C> Debug for Quoted<C>
+where
+    C: Display,
+{
+    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+        formatter.write_char('"')?;
+        Quoted(&mut *formatter).write_fmt(format_args!("{}", self.0))?;
+        formatter.write_char('"')?;
+        Ok(())
+    }
+}
+
+impl Write for Quoted<&mut fmt::Formatter<'_>> {
+    fn write_str(&mut self, s: &str) -> fmt::Result {
+        Display::fmt(&s.escape_debug(), self.0)
+    }
+}
+
+pub(crate) mod private {
+    use super::*;
+
+    pub trait Sealed {}
+
+    impl<T, E> Sealed for Result<T, E> where E: ext::StdError {}
+    impl<T> Sealed for Option<T> {}
+}
--- a/third_party/crates/anyhow-1.0.104/src/ensure.rs
+++ b/third_party/crates/anyhow-1.0.104/src/ensure.rs
@@ -0,0 +1,935 @@
+use crate::Error;
+use alloc::string::String;
+use core::fmt::{self, Debug, Write};
+use core::mem::MaybeUninit;
+use core::ptr;
+use core::slice;
+use core::str;
+
+#[doc(hidden)]
+pub trait BothDebug {
+    fn __dispatch_ensure(self, msg: &'static str) -> Error;
+}
+
+impl<A, B> BothDebug for (A, B)
+where
+    A: Debug,
+    B: Debug,
+{
+    fn __dispatch_ensure(self, msg: &'static str) -> Error {
+        render(msg, &self.0, &self.1)
+    }
+}
+
+#[doc(hidden)]
+pub trait NotBothDebug {
+    fn __dispatch_ensure(self, msg: &'static str) -> Error;
+}
+
+impl<A, B> NotBothDebug for &(A, B) {
+    fn __dispatch_ensure(self, msg: &'static str) -> Error {
+        Error::msg(msg)
+    }
+}
+
+struct Buf {
+    bytes: [MaybeUninit<u8>; 40],
+    written: usize,
+}
+
+impl Buf {
+    fn new() -> Self {
+        Buf {
+            bytes: [MaybeUninit::uninit(); 40],
+            written: 0,
+        }
+    }
+
+    fn as_str(&self) -> &str {
+        unsafe {
+            str::from_utf8_unchecked(slice::from_raw_parts(
+                self.bytes.as_ptr().cast::<u8>(),
+                self.written,
+            ))
+        }
+    }
+}
+
+impl Write for Buf {
+    fn write_str(&mut self, s: &str) -> fmt::Result {
+        if s.bytes().any(|b| b == b' ' || b == b'\n') {
+            return Err(fmt::Error);
+        }
+
+        let remaining = self.bytes.len() - self.written;
+        if s.len() > remaining {
+            return Err(fmt::Error);
+        }
+
+        unsafe {
+            ptr::copy_nonoverlapping(
+                s.as_ptr(),
+                self.bytes.as_mut_ptr().add(self.written).cast::<u8>(),
+                s.len(),
+            );
+        }
+        self.written += s.len();
+        Ok(())
+    }
+}
+
+fn render(msg: &'static str, lhs: &dyn Debug, rhs: &dyn Debug) -> Error {
+    let mut lhs_buf = Buf::new();
+    if fmt::write(&mut lhs_buf, format_args!("{:?}", lhs)).is_ok() {
+        let mut rhs_buf = Buf::new();
+        if fmt::write(&mut rhs_buf, format_args!("{:?}", rhs)).is_ok() {
+            let lhs_str = lhs_buf.as_str();
+            let rhs_str = rhs_buf.as_str();
+            // "{msg} ({lhs} vs {rhs})"
+            let len = msg.len() + 2 + lhs_str.len() + 4 + rhs_str.len() + 1;
+            let mut string = String::with_capacity(len);
+            string.push_str(msg);
+            string.push_str(" (");
+            string.push_str(lhs_str);
+            string.push_str(" vs ");
+            string.push_str(rhs_str);
+            string.push(')');
+            return Error::msg(string);
+        }
+    }
+    Error::msg(msg)
+}
+
+#[doc(hidden)]
+#[macro_export]
+macro_rules! __parse_ensure {
+    (atom () $bail:tt $fuel:tt {($($rhs:tt)+) ($($lhs:tt)+) $op:tt} $dup:tt $(,)?) => {
+        $crate::__fancy_ensure!($($lhs)+, $op, $($rhs)+)
+    };
+
+    // low precedence control flow constructs
+
+    (0 $stack:tt ($($bail:tt)*) $fuel:tt $parse:tt $dup:tt return $($rest:tt)*) => {
+        $crate::__fallback_ensure!($($bail)*)
+    };
+
+    (0 $stack:tt ($($bail:tt)*) $fuel:tt $parse:tt $dup:tt break $($rest:tt)*) => {
+        $crate::__fallback_ensure!($($bail)*)
+    };
+
+    (0 $stack:tt ($($bail:tt)*) $fuel:tt $parse:tt $dup:tt continue $($rest:tt)*) => {
+        $crate::__fallback_ensure!($($bail)*)
+    };
+
+    (0 $stack:tt ($($bail:tt)*) $fuel:tt $parse:tt $dup:tt yield $($rest:tt)*) => {
+        $crate::__fallback_ensure!($($bail)*)
+    };
+
+    (0 $stack:tt ($($bail:tt)*) $fuel:tt $parse:tt $dup:tt move $($rest:tt)*) => {
+        $crate::__fallback_ensure!($($bail)*)
+    };
+
+    // unary operators
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($deref:tt $($dup:tt)*) * $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $deref) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($not:tt $($dup:tt)*) ! $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $not) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($neg:tt $($dup:tt)*) - $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $neg) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($let:tt $($dup:tt)*) let $($rest:tt)*) => {
+        $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $let) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($lifetime:tt $colon:tt $($dup:tt)*) $label:lifetime : $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $lifetime $colon) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $mut:tt $($dup:tt)*) &mut $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $and $mut) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $raw:tt $mut:tt $($dup:tt)*) &raw mut $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $and $raw $mut) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $raw:tt $const:tt $($dup:tt)*) &raw const $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $and $raw $const) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $($dup:tt)*) & $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $and) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($andand:tt $mut:tt $($dup:tt)*) &&mut $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $andand $mut) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($andand:tt $raw:tt $mut:tt $($dup:tt)*) &&raw mut $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $andand $raw $mut) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($andand:tt $raw:tt $const:tt $($dup:tt)*) &&raw const $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $andand $raw $const) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($andand:tt $($dup:tt)*) && $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $andand) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    // control flow constructs
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($if:tt $($dup:tt)*) if $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 (cond $stack) $bail ($($fuel)*) {($($buf)* $if) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($match:tt $($dup:tt)*) match $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 (cond $stack) $bail ($($fuel)*) {($($buf)* $match) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($while:tt $($dup:tt)*) while $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 (cond $stack) $bail ($($fuel)*) {($($buf)* $while) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($for:tt $($dup:tt)*) for $($rest:tt)*) => {
+        $crate::__parse_ensure!(pat (cond $stack) $bail ($($fuel)*) {($($buf)* $for) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom (cond $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($brace:tt $($dup:tt)*) {$($block:tt)*} $($rest:tt)*) => {
+        $crate::__parse_ensure!(cond $stack $bail ($($fuel)*) {($($buf)* $brace) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (cond $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($else:tt $if:tt $($dup:tt)*) else if $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 (cond $stack) $bail ($($fuel)*) {($($buf)* $else $if) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (cond $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($else:tt $brace:tt $($dup:tt)*) else {$($block:tt)*} $($rest:tt)*) => {
+        $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $else $brace) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (cond $stack:tt $bail:tt (~$($fuel:tt)*) $parse:tt $dup:tt $($rest:tt)*) => {
+        $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) $parse $dup $($rest)*)
+    };
+
+    // atomic expressions
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($paren:tt $($dup:tt)*) ($($content:tt)*) $($rest:tt)*) => {
+        $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $paren) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bracket:tt $($dup:tt)*) [$($array:tt)*] $($rest:tt)*) => {
+        $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $bracket) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($brace:tt $($dup:tt)*) {$($block:tt)*} $($rest:tt)*) => {
+        $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $brace) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($loop:tt $block:tt $($dup:tt)*) loop {$($body:tt)*} $($rest:tt)*) => {
+        $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $loop $block) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($async:tt $block:tt $($dup:tt)*) async {$($body:tt)*} $($rest:tt)*) => {
+        $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $async $block) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($async:tt $move:tt $block:tt $($dup:tt)*) async move {$($body:tt)*} $($rest:tt)*) => {
+        $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $async $move $block) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($unsafe:tt $block:tt $($dup:tt)*) unsafe {$($body:tt)*} $($rest:tt)*) => {
+        $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $unsafe $block) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($const:tt $block:tt $($dup:tt)*) const {$($body:tt)*} $($rest:tt)*) => {
+        // TODO: this is mostly useless due to https://github.com/rust-lang/rust/issues/86730
+        $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $const $block) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($literal:tt $($dup:tt)*) $lit:literal $($rest:tt)*) => {
+        $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $literal) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    // path expressions
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $ident:tt $($dup:tt)*) :: $i:ident $($rest:tt)*) => {
+        $crate::__parse_ensure!(epath (atom $stack) $bail ($($fuel)*) {($($buf)* $colons $ident) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($ident:tt $($dup:tt)*) $i:ident $($rest:tt)*) => {
+        $crate::__parse_ensure!(epath (atom $stack) $bail ($($fuel)*) {($($buf)* $ident) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($langle:tt $($dup:tt)*) < $($rest:tt)*) => {
+        $crate::__parse_ensure!(type (qpath (epath (atom $stack))) $bail ($($fuel)*) {($($buf)* $langle) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (epath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $langle:tt $($dup:tt)*) :: < $($rest:tt)*) => {
+        $crate::__parse_ensure!(generic (epath $stack) $bail ($($fuel)*) {($($buf)* $colons $langle) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (epath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $langle:tt $($dup:tt)*) :: << $($rest:tt)*) => {
+        $crate::__parse_ensure!(type (qpath (tpath (arglist (epath $stack)))) $bail ($($fuel)*) {($($buf)* $colons $langle) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (epath $stack:tt ($($bail:tt)*) (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt :: <- - $($rest:tt)*) => {
+        $crate::__fallback_ensure!($($bail)*)
+    };
+
+    (epath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $larrow:tt $($dup:tt)*) :: <- $lit:literal $($rest:tt)*) => {
+        $crate::__parse_ensure!(generic (epath $stack) $bail ($($fuel)*) {($($buf)* $colons $larrow) $($parse)*} ($($dup)*) $($dup)*)
+    };
+
+    (epath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $ident:tt $($dup:tt)*) :: $i:ident $($rest:tt)*) => {
+        $crate::__parse_ensure!(epath $stack $bail ($($fuel)*) {($($buf)* $colons $ident) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (epath ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bang:tt $args:tt $($dup:tt)*) ! ($($mac:tt)*) $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $bang $args) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (epath ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bang:tt $args:tt $($dup:tt)*) ! [$($mac:tt)*] $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $bang $args) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (epath ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bang:tt $args:tt $($dup:tt)*) ! {$($mac:tt)*} $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $bang $args) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (epath (split ($pop:ident $stack:tt)) $bail:tt (~$($fuel:tt)*) $parse:tt $dup:tt $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop (split $stack) $bail ($($fuel)*) $parse $dup $($rest)*)
+    };
+
+    (epath ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) $parse:tt $dup:tt $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) $parse $dup $($rest)*)
+    };
+
+    // trailer expressions
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($paren:tt $($dup:tt)*) ($($call:tt)*) $($rest:tt)*) => {
+        $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $paren) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bracket:tt $($dup:tt)*) [$($index:tt)*] $($rest:tt)*) => {
+        $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $bracket) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($brace:tt $($dup:tt)*) {$($init:tt)*} $($rest:tt)*) => {
+        $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $brace) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($question:tt $($dup:tt)*) ? $($rest:tt)*) => {
+        $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $question) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($dot:tt $ident:tt $colons:tt $langle:tt $($dup:tt)*) . $i:ident :: < $($rest:tt)*) => {
+        $crate::__parse_ensure!(generic (atom $stack) $bail ($($fuel)*) {($($buf)* $dot $ident $colons $langle) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($dot:tt $ident:tt $colons:tt $langle:tt $($dup:tt)*) . $i:ident :: << $($rest:tt)*) => {
+        $crate::__parse_ensure!(type (qpath (tpath (arglist (atom $stack)))) $bail ($($fuel)*) {($($buf)* $dot $ident $colons $langle) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt ($($bail:tt)*) (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt . $i:ident :: <- - $($rest:tt)*) => {
+        $crate::__fallback_ensure!($($bail)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($dot:tt $ident:tt $colons:tt $larrow:tt $($dup:tt)*) . $i:ident :: <- $lit:literal $($rest:tt)*) => {
+        $crate::__parse_ensure!(generic (atom $stack) $bail ($($fuel)*) {($($buf)* $dot $ident $colons $larrow) $($parse)*} ($($dup)*) $($dup)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($dot:tt $field:tt $($dup:tt)*) . $i:ident $($rest:tt)*) => {
+        $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $dot $field) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt ($($bail:tt)*) (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt . - $($rest:tt)*) => {
+        $crate::__fallback_ensure!($($bail)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($dot:tt $index:tt $($dup:tt)*) . $lit:literal $($rest:tt)*) => {
+        $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $dot $index) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($as:tt $($dup:tt)*) as $($rest:tt)*) => {
+        $crate::__parse_ensure!(type (atom $stack) $bail ($($fuel)*) {($($buf)* $as) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    // types
+
+    (type ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bracket:tt $($dup:tt)*) [$($content:tt)*] $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $bracket) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($paren:tt $($dup:tt)*) ($($content:tt)*) $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $paren) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($star:tt $const:tt $($dup:tt)*) *const $($rest:tt)*) => {
+        $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $star $const) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($star:tt $mut:tt $($dup:tt)*) *mut $($rest:tt)*) => {
+        $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $star $mut) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $lifetime:tt $mut:tt $($dup:tt)*) & $l:lifetime mut $($rest:tt)*) => {
+        $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $and $lifetime $mut) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $mut:tt $($dup:tt)*) & mut $($rest:tt)*) => {
+        $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $and $mut) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $lifetime:tt $($dup:tt)*) & $l:lifetime $($rest:tt)*) => {
+        $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $and $lifetime) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $($dup:tt)*) & $($rest:tt)*) => {
+        $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $and) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $lifetime:tt $mut:tt $($dup:tt)*) && $l:lifetime mut $($rest:tt)*) => {
+        $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $and $lifetime $mut) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $mut:tt $($dup:tt)*) && mut $($rest:tt)*) => {
+        $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $and $mut) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $lifetime:tt $($dup:tt)*) && $l:lifetime $($rest:tt)*) => {
+        $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $and $lifetime) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $($dup:tt)*) && $($rest:tt)*) => {
+        $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $and) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type $stack:tt ($($bail:tt)*) (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt unsafe extern - $($rest:tt)*) => {
+        $crate::__fallback_ensure!($($bail)*)
+    };
+
+    (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($unsafe:tt $(extern $($abi:literal)?)? fn $($dup:tt)*) unsafe $($rest:tt)*) => {
+        $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $unsafe) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type $stack:tt ($($bail:tt)*) (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt extern - $($rest:tt)*) => {
+        $crate::__fallback_ensure!($($bail)*)
+    };
+
+    (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($extern:tt $abi:tt fn $($dup:tt)*) extern $lit:literal $($rest:tt)*) => {
+        $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $extern $abi) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($extern:tt fn $($dup:tt)*) extern $($rest:tt)*) => {
+        $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $extern) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($fn:tt $paren:tt $arrow:tt $($dup:tt)*) fn ($($args:tt)*) -> $($rest:tt)*) => {
+        $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $fn $paren $arrow) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($fn:tt $paren:tt $($dup:tt)*) fn ($($args:tt)*) $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $fn $paren) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($impl:tt $($dup:tt)*) impl $($rest:tt)*) => {
+        $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $impl) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($dyn:tt $($dup:tt)*) dyn $($rest:tt)*) => {
+        $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $dyn) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($wild:tt $($dup:tt)*) _ $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $wild) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($never:tt $($dup:tt)*) ! $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $never) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($for:tt $langle:tt $($dup:tt)*) for < $($rest:tt)*) => {
+        $crate::__parse_ensure!(generic (type $stack) $bail ($($fuel)*) {($($buf)* $for $langle) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    // path types
+
+    (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $ident:tt $($dup:tt)*) :: $i:ident $($rest:tt)*) => {
+        $crate::__parse_ensure!(tpath $stack $bail ($($fuel)*) {($($buf)* $colons $ident) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($ident:tt $($dup:tt)*) $i:ident $($rest:tt)*) => {
+        $crate::__parse_ensure!(tpath $stack $bail ($($fuel)*) {($($buf)* $ident) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($langle:tt $($dup:tt)*) < $($rest:tt)*) => {
+        $crate::__parse_ensure!(type (qpath (tpath $stack)) $bail ($($fuel)*) {($($buf)* $langle) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (tpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($langle:tt $($dup:tt)*) < $($rest:tt)*) => {
+        $crate::__parse_ensure!(generic (tpath $stack) $bail ($($fuel)*) {($($buf)* $langle) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (tpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($langle:tt $($dup:tt)*) << $($rest:tt)*) => {
+        $crate::__parse_ensure!(type (qpath (tpath (arglist (tpath $stack)))) $bail ($($fuel)*) {($($buf)* $langle) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (tpath $stack:tt ($($bail:tt)*) (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt <- - $($rest:tt)*) => {
+        $crate::__fallback_ensure!($($bail)*)
+    };
+
+    (tpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($larrow:tt $($dup:tt)*) <- $lit:literal $($rest:tt)*) => {
+        $crate::__parse_ensure!(generic (tpath $stack) $bail ($($fuel)*) {($($buf)* $larrow) $($parse)*} ($($dup)*) $($dup)*)
+    };
+
+    (tpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $langle:tt $($dup:tt)*) :: < $($rest:tt)*) => {
+        $crate::__parse_ensure!(generic (tpath $stack) $bail ($($fuel)*) {($($buf)* $colons $langle) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (tpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $langle:tt $($dup:tt)*) :: << $($rest:tt)*) => {
+        $crate::__parse_ensure!(type (qpath (tpath (arglist (tpath $stack)))) $bail ($($fuel)*) {($($buf)* $colons $langle) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (tpath $stack:tt ($($bail:tt)*) (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt :: <- - $($rest:tt)*) => {
+        $crate::__fallback_ensure!($($bail)*)
+    };
+
+    (tpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $larrow:tt $($dup:tt)*) :: <- $lit:literal $($rest:tt)*) => {
+        $crate::__parse_ensure!(generic (tpath $stack) $bail ($($fuel)*) {($($buf)* $colons $larrow) $($parse)*} ($($dup)*) $($dup)*)
+    };
+
+    (tpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $ident:tt $($dup:tt)*) :: $i:ident $($rest:tt)*) => {
+        $crate::__parse_ensure!(tpath $stack $bail ($($fuel)*) {($($buf)* $colons $ident) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (tpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($paren:tt $arrow:tt $($dup:tt)*) ($($args:tt)*) -> $($rest:tt)*) => {
+        $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $paren $arrow) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (tpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($paren:tt $($dup:tt)*) ($($args:tt)*) $($rest:tt)*) => {
+        $crate::__parse_ensure!(object $stack $bail ($($fuel)*) {($($buf)* $paren) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (tpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $paren:tt $arrow:tt $($dup:tt)*) :: ($($args:tt)*) -> $($rest:tt)*) => {
+        $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $colons $paren $arrow) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (tpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $paren:tt $($dup:tt)*) :: ($($args:tt)*) $($rest:tt)*) => {
+        $crate::__parse_ensure!(object $stack $bail ($($fuel)*) {($($buf)* $colons $paren) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (tpath ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bang:tt $args:tt $($dup:tt)*) ! ($($mac:tt)*) $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $bang $args) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (tpath ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bang:tt $args:tt $($dup:tt)*) ! [$($mac:tt)*] $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $bang $args) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (tpath ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bang:tt $args:tt $($dup:tt)*) ! {$($mac:tt)*} $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $bang $args) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (tpath $stack:tt $bail:tt (~$($fuel:tt)*) $parse:tt $dup:tt $($rest:tt)*) => {
+        $crate::__parse_ensure!(object $stack $bail ($($fuel)*) $parse $dup $($rest)*)
+    };
+
+    // qualified paths
+
+    (qpath (split ($pop:ident $stack:tt)) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($rangle:tt $colons:tt $ident:tt $($dup:tt)*) >> :: $i:ident $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $rangle $colons $ident) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (qpath ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($rangle:tt $colons:tt $ident:tt $($dup:tt)*) > :: $i:ident $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $rangle $colons $ident) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (qpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($as:tt $($dup:tt)*) as $($rest:tt)*) => {
+        $crate::__parse_ensure!(type (qpath $stack) $bail ($($fuel)*) {($($buf)* $as) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    // trait objects
+
+    (object (arglist $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($plus:tt $colons:tt $ident:tt $($dup:tt)*) + :: $i:ident $($rest:tt)*) => {
+        $crate::__parse_ensure!(tpath (arglist $stack) $bail ($($fuel)*) {($($buf)* $plus $colons $ident) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (object (arglist $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($plus:tt $ident:tt $($dup:tt)*) + $i:ident $($rest:tt)*) => {
+        $crate::__parse_ensure!(tpath (arglist $stack) $bail ($($fuel)*) {($($buf)* $plus $ident) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (object (split ($pop:ident $stack:tt)) $bail:tt (~$($fuel:tt)*) $parse:tt $dup:tt $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop (split $stack) $bail ($($fuel)*) $parse $dup $($rest)*)
+    };
+
+    (object ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) $parse:tt $dup:tt $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) $parse $dup $($rest)*)
+    };
+
+    // angle bracketed generic arguments
+
+    (generic (split ($pop:ident $stack:tt)) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($rangle:tt $($dup:tt)*) >> $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $rangle) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (generic ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($rangle:tt $($dup:tt)*) > $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $rangle) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (generic ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($rangle:tt $($dup:tt)*) >> $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop (split $stack) $bail ($($fuel)*) {($($buf)*) $($parse)*} ($rangle $($rest)*) $rangle $($rest)*)
+    };
+
+    (generic $stack:tt ($($bail:tt)*) (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt - - $($rest:tt)*) => {
+        $crate::__fallback_ensure!($($bail)*)
+    };
+
+    (generic $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($neg:tt $($dup:tt)*) - $lit:literal $($rest:tt)*) => {
+        $crate::__parse_ensure!(generic $stack $bail ($($fuel)*) {($($buf)* $neg) $($parse)*} ($($dup)*) $($dup)*)
+    };
+
+    (generic $stack:tt ($($bail:tt)*) (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt - $($rest:tt)*) => {
+        $crate::__fallback_ensure!($($bail)*)
+    };
+
+    (generic $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($literal:tt $($dup:tt)*) $lit:literal $($rest:tt)*) => {
+        $crate::__parse_ensure!(arglist $stack $bail ($($fuel)*) {($($buf)* $literal) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (generic $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($brace:tt $($dup:tt)*) {$($block:tt)*} $($rest:tt)*) => {
+        $crate::__parse_ensure!(arglist $stack $bail ($($fuel)*) {($($buf)* $brace) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (generic $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($lifetime:tt $($dup:tt)*) $l:lifetime $($rest:tt)*) => {
+        $crate::__parse_ensure!(arglist $stack $bail ($($fuel)*) {($($buf)* $lifetime) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (generic $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($assoc:tt $eq:tt $($dup:tt)*) $ident:ident = $($rest:tt)*) => {
+        $crate::__parse_ensure!(type (arglist $stack) $bail ($($fuel)*) {($($buf)* $assoc $eq) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (generic $stack:tt $bail:tt (~$($fuel:tt)*) $parse:tt $dup:tt $($rest:tt)*) => {
+        $crate::__parse_ensure!(type (arglist $stack) $bail ($($fuel)*) $parse $dup $($rest)*)
+    };
+
+    (arglist $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($comma:tt $($dup:tt)*) , $($rest:tt)*) => {
+        $crate::__parse_ensure!(generic $stack $bail ($($fuel)*) {($($buf)* $comma) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (arglist (split ($pop:ident $stack:tt)) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($rangle:tt $($dup:tt)*) >> $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)*) $rangle $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (arglist ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($rangle:tt $($dup:tt)*) > $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $rangle) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (arglist ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($rangle:tt $($dup:tt)*) >> $($rest:tt)*) => {
+        $crate::__parse_ensure!($pop (split $stack) $bail ($($fuel)*) {($($buf)*) $($parse)*} ($rangle $($rest)*) $rangle $($rest)*)
+    };
+
+    // patterns
+
+    (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($pipe:tt $($dup:tt)*) | $($rest:tt)*) => {
+        $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $pipe) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($eq:tt $($dup:tt)*) = $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $eq) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($in:tt $($dup:tt)*) in $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $in) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($ref:tt $($dup:tt)*) ref $($rest:tt)*) => {
+        $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $ref) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($mut:tt $($dup:tt)*) mut $($rest:tt)*) => {
+        $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $mut) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($at:tt $($dup:tt)*) @ $($rest:tt)*) => {
+        $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $at) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (pat $stack:tt ($($bail:tt)*) (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt - - $($rest:tt)*) => {
+        $crate::__fallback_ensure!($($bail)*)
+    };
+
+    (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($neg:tt $($dup:tt)*) - $lit:literal $($rest:tt)*) => {
+        $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $neg) $($parse)*} ($($dup)*) $($dup)*)
+    };
+
+    (pat $stack:tt ($($bail:tt)*) (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt - $($rest:tt)*) => {
+        $crate::__fallback_ensure!($($bail)*)
+    };
+
+    (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($literal:tt $($dup:tt)*) $lit:literal $($rest:tt)*) => {
+        $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $literal) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($range:tt $($dup:tt)*) .. $($rest:tt)*) => {
+        $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $range) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($range:tt $($dup:tt)*) ..= $($rest:tt)*) => {
+        $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $range) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $($dup:tt)*) & $($rest:tt)*) => {
+        $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $and) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($andand:tt $($dup:tt)*) && $($rest:tt)*) => {
+        $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $andand) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($paren:tt $($dup:tt)*) ($($content:tt)*) $($rest:tt)*) => {
+        $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $paren) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bracket:tt $($dup:tt)*) [$($content:tt)*] $($rest:tt)*) => {
+        $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $bracket) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($brace:tt $($dup:tt)*) {$($content:tt)*} $($rest:tt)*) => {
+        $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $brace) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($wild:tt $($dup:tt)*) _ $($rest:tt)*) => {
+        $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $wild) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $ident:tt $($dup:tt)*) :: $i:ident $($rest:tt)*) => {
+        $crate::__parse_ensure!(epath (pat $stack) $bail ($($fuel)*) {($($buf)* $colons $ident) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($ident:tt $($dup:tt)*) $i:ident $($rest:tt)*) => {
+        $crate::__parse_ensure!(epath (pat $stack) $bail ($($fuel)*) {($($buf)* $ident) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($langle:tt $($dup:tt)*) < $($rest:tt)*) => {
+        $crate::__parse_ensure!(type (qpath (epath (pat $stack))) $bail ($($fuel)*) {($($buf)* $langle) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    // comparison binary operators
+
+    (atom () $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($eq:tt $($dup:tt)*) == $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 () $bail ($($fuel)*) {() $($parse)* ($($buf)*) $eq} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)+) $($parse:tt)*} ($eq:tt $($dup:tt)*) == $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $eq) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom () $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($le:tt $($dup:tt)*) <= $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 () $bail ($($fuel)*) {() $($parse)* ($($buf)*) $le} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)+) $($parse:tt)*} ($le:tt $($dup:tt)*) <= $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $le) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom () $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($lt:tt $($dup:tt)*) < $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 () $bail ($($fuel)*) {() $($parse)* ($($buf)*) $lt} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)+) $($parse:tt)*} ($lt:tt $($dup:tt)*) < $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $lt) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom () $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($ne:tt $($dup:tt)*) != $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 () $bail ($($fuel)*) {() $($parse)* ($($buf)*) $ne} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)+) $($parse:tt)*} ($ne:tt $($dup:tt)*) != $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $ne) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom () $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($ge:tt $($dup:tt)*) >= $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 () $bail ($($fuel)*) {() $($parse)* ($($buf)*) $ge} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)+) $($parse:tt)*} ($ge:tt $($dup:tt)*) >= $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $ge) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom (split ()) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt >> $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 () $bail ($($fuel)*) {() $($parse)* ($($buf)* > ) > } ($($rest)*) $($rest)*)
+    };
+
+    (atom () $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($gt:tt $($dup:tt)*) > $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 () $bail ($($fuel)*) {() $($parse)* ($($buf)*) $gt} ($($rest)*) $($rest)*)
+    };
+
+    (atom (split $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)+) $($parse:tt)*} ($rangle:tt $($dup:tt)*) >> $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $rangle) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)+) $($parse:tt)*} ($gt:tt $($dup:tt)*) > $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $gt) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    // high precedence binary operators
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($add:tt $($dup:tt)*) + $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $add) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($sub:tt $($dup:tt)*) - $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $sub) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($mul:tt $($dup:tt)*) * $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $mul) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($div:tt $($dup:tt)*) / $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $div) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($rem:tt $($dup:tt)*) % $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $rem) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bitxor:tt $($dup:tt)*) ^ $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $bitxor) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bitand:tt $($dup:tt)*) & $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $bitand) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bitor:tt $($dup:tt)*) | $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $bitor) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($shl:tt $($dup:tt)*) << $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $shl) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($shr:tt $($dup:tt)*) >> $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $shr) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    // low precedence binary operators
+
+    (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $($dup:tt)*) && $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $and) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($or:tt $($dup:tt)*) || $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $or) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($assign:tt $($dup:tt)*) = $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $assign) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($addeq:tt $($dup:tt)*) += $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $addeq) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($subeq:tt $($dup:tt)*) -= $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $subeq) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($muleq:tt $($dup:tt)*) *= $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $muleq) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($diveq:tt $($dup:tt)*) /= $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $diveq) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($remeq:tt $($dup:tt)*) %= $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $remeq) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bitxoreq:tt $($dup:tt)*) ^= $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $bitxoreq) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bitandeq:tt $($dup:tt)*) &= $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $bitandeq) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bitoreq:tt $($dup:tt)*) |= $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $bitoreq) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($shleq:tt $($dup:tt)*) <<= $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $shleq) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($shreq:tt $($dup:tt)*) >>= $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $shreq) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    // unrecognized expression
+
+    ($state:tt $stack:tt ($($bail:tt)*) $($rest:tt)*) => {
+        $crate::__fallback_ensure!($($bail)*)
+    };
+}
+
+#[doc(hidden)]
+#[macro_export]
+macro_rules! __fancy_ensure {
+    ($lhs:expr, $op:tt, $rhs:expr) => {
+        match (&$lhs, &$rhs) {
+            (lhs, rhs) => {
+                if !(lhs $op rhs) {
+                    #[allow(unused_imports)]
+                    use $crate::__private::{BothDebug, NotBothDebug};
+                    return Err((lhs, rhs).__dispatch_ensure(
+                        $crate::__private::concat!(
+                            "Condition failed: `",
+                            $crate::__private::stringify!($lhs),
+                            " ",
+                            $crate::__private::stringify!($op),
+                            " ",
+                            $crate::__private::stringify!($rhs),
+                            "`",
+                        ),
+                    ));
+                }
+            }
+        }
+    };
+}
+
+#[doc(hidden)]
+#[macro_export]
+macro_rules! __fallback_ensure {
+    ($cond:expr $(,)?) => {
+        if $crate::__private::not($cond) {
+            return $crate::__private::Err($crate::Error::msg(
+                $crate::__private::concat!("Condition failed: `", $crate::__private::stringify!($cond), "`")
+            ));
+        }
+    };
+    ($cond:expr, $msg:literal $(,)?) => {
+        if $crate::__private::not($cond) {
+            return $crate::__private::Err($crate::__anyhow!($msg));
+        }
+    };
+    ($cond:expr, $err:expr $(,)?) => {
+        if $crate::__private::not($cond) {
+            return $crate::__private::Err($crate::__anyhow!($err));
+        }
+    };
+    ($cond:expr, $fmt:expr, $($arg:tt)*) => {
+        if $crate::__private::not($cond) {
+            return $crate::__private::Err($crate::__anyhow!($fmt, $($arg)*));
+        }
+    };
+}
--- a/third_party/crates/anyhow-1.0.104/src/error.rs
+++ b/third_party/crates/anyhow-1.0.104/src/error.rs
--- a/third_party/crates/anyhow-1.0.104/src/fmt.rs
+++ b/third_party/crates/anyhow-1.0.104/src/fmt.rs
@@ -0,0 +1,158 @@
+use crate::chain::Chain;
+use crate::error::ErrorImpl;
+use crate::ptr::Ref;
+use core::fmt::{self, Debug, Write};
+
+impl ErrorImpl {
+    pub(crate) unsafe fn display(this: Ref<Self>, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{}", unsafe { Self::error(this) })?;
+
+        if f.alternate() {
+            let chain = unsafe { Self::chain(this) };
+            for cause in chain.skip(1) {
+                write!(f, ": {}", cause)?;
+            }
+        }
+
+        Ok(())
+    }
+
+    pub(crate) unsafe fn debug(this: Ref<Self>, f: &mut fmt::Formatter) -> fmt::Result {
+        let error = unsafe { Self::error(this) };
+
+        if f.alternate() {
+            return Debug::fmt(error, f);
+        }
+
+        write!(f, "{}", error)?;
+
+        if let Some(cause) = error.source() {
+            write!(f, "\n\nCaused by:")?;
+            let multiple = cause.source().is_some();
+            for (n, error) in Chain::new(cause).enumerate() {
+                writeln!(f)?;
+                let mut indented = Indented {
+                    inner: f,
+                    number: if multiple { Some(n) } else { None },
+                    started: false,
+                };
+                write!(indented, "{}", error)?;
+            }
+        }
+
+        #[cfg(feature = "std")]
+        {
+            use alloc::string::ToString;
+            use std::backtrace::BacktraceStatus;
+
+            let backtrace = unsafe { Self::backtrace(this) };
+            if let BacktraceStatus::Captured = backtrace.status() {
+                let mut backtrace = backtrace.to_string();
+                write!(f, "\n\n")?;
+                if backtrace.starts_with("stack backtrace:") {
+                    // Capitalize to match "Caused by:"
+                    backtrace.replace_range(0..1, "S");
+                } else {
+                    // "stack backtrace:" prefix was removed in
+                    // https://github.com/rust-lang/backtrace-rs/pull/286
+                    writeln!(f, "Stack backtrace:")?;
+                }
+                backtrace.truncate(backtrace.trim_end().len());
+                write!(f, "{}", backtrace)?;
+            }
+        }
+
+        Ok(())
+    }
+}
+
+struct Indented<'a, D> {
+    inner: &'a mut D,
+    number: Option<usize>,
+    started: bool,
+}
+
+impl<T> Write for Indented<'_, T>
+where
+    T: Write,
+{
+    fn write_str(&mut self, s: &str) -> fmt::Result {
+        for (i, line) in s.split('\n').enumerate() {
+            if !self.started {
+                self.started = true;
+                match self.number {
+                    Some(number) => write!(self.inner, "{: >5}: ", number)?,
+                    None => self.inner.write_str("    ")?,
+                }
+            } else if i > 0 {
+                self.inner.write_char('\n')?;
+                if self.number.is_some() {
+                    self.inner.write_str("       ")?;
+                } else {
+                    self.inner.write_str("    ")?;
+                }
+            }
+
+            self.inner.write_str(line)?;
+        }
+
+        Ok(())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use alloc::string::String;
+
+    #[test]
+    fn one_digit() {
+        let input = "verify\nthis";
+        let expected = "    2: verify\n       this";
+        let mut output = String::new();
+
+        Indented {
+            inner: &mut output,
+            number: Some(2),
+            started: false,
+        }
+        .write_str(input)
+        .unwrap();
+
+        assert_eq!(expected, output);
+    }
+
+    #[test]
+    fn two_digits() {
+        let input = "verify\nthis";
+        let expected = "   12: verify\n       this";
+        let mut output = String::new();
+
+        Indented {
+            inner: &mut output,
+            number: Some(12),
+            started: false,
+        }
+        .write_str(input)
+        .unwrap();
+
+        assert_eq!(expected, output);
+    }
+
+    #[test]
+    fn no_digits() {
+        let input = "verify\nthis";
+        let expected = "    verify\n    this";
+        let mut output = String::new();
+
+        Indented {
+            inner: &mut output,
+            number: None,
+            started: false,
+        }
+        .write_str(input)
+        .unwrap();
+
+        assert_eq!(expected, output);
+    }
+}
--- a/third_party/crates/anyhow-1.0.104/src/kind.rs
+++ b/third_party/crates/anyhow-1.0.104/src/kind.rs
@@ -0,0 +1,121 @@
+// Tagged dispatch mechanism for resolving the behavior of `anyhow!($expr)`.
+//
+// When anyhow! is given a single expr argument to turn into anyhow::Error, we
+// want the resulting Error to pick up the input's implementation of source()
+// and backtrace() if it has a std::error::Error impl, otherwise require nothing
+// more than Display and Debug.
+//
+// Expressed in terms of specialization, we want something like:
+//
+//     trait AnyhowNew {
+//         fn new(self) -> Error;
+//     }
+//
+//     impl<T> AnyhowNew for T
+//     where
+//         T: Display + Debug + Send + Sync + 'static,
+//     {
+//         default fn new(self) -> Error {
+//             /* no std error impl */
+//         }
+//     }
+//
+//     impl<T> AnyhowNew for T
+//     where
+//         T: std::error::Error + Send + Sync + 'static,
+//     {
+//         fn new(self) -> Error {
+//             /* use std error's source() and backtrace() */
+//         }
+//     }
+//
+// Since specialization is not stable yet, instead we rely on autoref behavior
+// of method resolution to perform tagged dispatch. Here we have two traits
+// AdhocKind and TraitKind that both have an anyhow_kind() method. AdhocKind is
+// implemented whether or not the caller's type has a std error impl, while
+// TraitKind is implemented only when a std error impl does exist. The ambiguity
+// is resolved by AdhocKind requiring an extra autoref so that it has lower
+// precedence.
+//
+// The anyhow! macro will set up the call in this form:
+//
+//     #[allow(unused_imports)]
+//     use $crate::__private::{AdhocKind, TraitKind};
+//     let error = $msg;
+//     (&error).anyhow_kind().new(error)
+
+use crate::Error;
+use core::fmt::{Debug, Display};
+
+#[cfg(any(feature = "std", not(anyhow_no_core_error)))]
+use crate::StdError;
+#[cfg(any(feature = "std", not(anyhow_no_core_error)))]
+use alloc::boxed::Box;
+
+pub struct Adhoc;
+
+#[doc(hidden)]
+pub trait AdhocKind: Sized {
+    #[inline]
+    fn anyhow_kind(&self) -> Adhoc {
+        Adhoc
+    }
+}
+
+impl<T> AdhocKind for &T where T: ?Sized + Display + Debug + Send + Sync + 'static {}
+
+impl Adhoc {
+    #[cold]
+    pub fn new<M>(self, message: M) -> Error
+    where
+        M: Display + Debug + Send + Sync + 'static,
+    {
+        Error::construct_from_adhoc(message, backtrace!())
+    }
+}
+
+pub struct Trait;
+
+#[doc(hidden)]
+pub trait TraitKind: Sized {
+    #[inline]
+    fn anyhow_kind(&self) -> Trait {
+        Trait
+    }
+}
+
+impl<E> TraitKind for E where E: Into<Error> {}
+
+impl Trait {
+    #[cold]
+    pub fn new<E>(self, error: E) -> Error
+    where
+        E: Into<Error>,
+    {
+        error.into()
+    }
+}
+
+#[cfg(any(feature = "std", not(anyhow_no_core_error)))]
+pub struct Boxed;
+
+#[cfg(any(feature = "std", not(anyhow_no_core_error)))]
+#[doc(hidden)]
+pub trait BoxedKind: Sized {
+    #[inline]
+    fn anyhow_kind(&self) -> Boxed {
+        Boxed
+    }
+}
+
+#[cfg(any(feature = "std", not(anyhow_no_core_error)))]
+impl BoxedKind for Box<dyn StdError + Send + Sync> {}
+
+#[cfg(any(feature = "std", not(anyhow_no_core_error)))]
+impl Boxed {
+    #[cold]
+    pub fn new(self, error: Box<dyn StdError + Send + Sync>) -> Error {
+        let backtrace = backtrace_if_absent!(&*error);
+        Error::construct_from_boxed(error, backtrace)
+    }
+}
--- a/third_party/crates/anyhow-1.0.104/src/lib.rs
+++ b/third_party/crates/anyhow-1.0.104/src/lib.rs
@@ -0,0 +1,728 @@
+//! [![github]](https://github.com/dtolnay/anyhow)&ensp;[![crates-io]](https://crates.io/crates/anyhow)&ensp;[![docs-rs]](https://docs.rs/anyhow)
+//!
+//! [github]: https://img.shields.io/badge/github-8da0cb?style=for-the-badge&labelColor=555555&logo=github
+//! [crates-io]: https://img.shields.io/badge/crates.io-fc8d62?style=for-the-badge&labelColor=555555&logo=rust
+//! [docs-rs]: https://img.shields.io/badge/docs.rs-66c2a5?style=for-the-badge&labelColor=555555&logo=docs.rs
+//!
+//! <br>
+//!
+//! This library provides [`anyhow::Error`][Error], a trait object based error
+//! type for easy idiomatic error handling in Rust applications.
+//!
+//! <br>
+//!
+//! # Details
+//!
+//! - Use `Result<T, anyhow::Error>`, or equivalently `anyhow::Result<T>`, as
+//!   the return type of any fallible function.
+//!
+//!   Within the function, use `?` to easily propagate any error that implements
+//!   the [`std::error::Error`] trait.
+//!
+//!   ```
+//!   # pub trait Deserialize {}
+//!   #
+//!   # mod serde_json {
+//!   #     use super::Deserialize;
+//!   #     use std::io;
+//!   #
+//!   #     pub fn from_str<T: Deserialize>(json: &str) -> io::Result<T> {
+//!   #         unimplemented!()
+//!   #     }
+//!   # }
+//!   #
+//!   # struct ClusterMap;
+//!   #
+//!   # impl Deserialize for ClusterMap {}
+//!   #
+//!   use anyhow::Result;
+//!
+//!   fn get_cluster_info() -> Result<ClusterMap> {
+//!       let config = std::fs::read_to_string("cluster.json")?;
+//!       let map: ClusterMap = serde_json::from_str(&config)?;
+//!       Ok(map)
+//!   }
+//!   #
+//!   # fn main() {}
+//!   ```
+//!
+//! - Attach context to help the person troubleshooting the error understand
+//!   where things went wrong. A low-level error like "No such file or
+//!   directory" can be annoying to debug without more context about what higher
+//!   level step the application was in the middle of.
+//!
+//!   ```
+//!   # struct It;
+//!   #
+//!   # impl It {
+//!   #     fn detach(&self) -> Result<()> {
+//!   #         unimplemented!()
+//!   #     }
+//!   # }
+//!   #
+//!   use anyhow::{Context, Result};
+//!
+//!   fn main() -> Result<()> {
+//!       # return Ok(());
+//!       #
+//!       # const _: &str = stringify! {
+//!       ...
+//!       # };
+//!       #
+//!       # let it = It;
+//!       # let path = "./path/to/instrs.json";
+//!       #
+//!       it.detach().context("Failed to detach the important thing")?;
+//!
+//!       let content = std::fs::read(path)
+//!           .with_context(|| format!("Failed to read instrs from {}", path))?;
+//!       #
+//!       # const _: &str = stringify! {
+//!       ...
+//!       # };
+//!       #
+//!       # Ok(())
+//!   }
+//!   ```
+//!
+//!   ```console
+//!   Error: Failed to read instrs from ./path/to/instrs.json
+//!
+//!   Caused by:
+//!       No such file or directory (os error 2)
+//!   ```
+//!
+//! - Downcasting is supported and can be by value, by shared reference, or by
+//!   mutable reference as needed.
+//!
+//!   ```
+//!   # use anyhow::anyhow;
+//!   # use std::fmt::{self, Display};
+//!   # use std::task::Poll;
+//!   #
+//!   # #[derive(Debug)]
+//!   # enum DataStoreError {
+//!   #     Censored(()),
+//!   # }
+//!   #
+//!   # impl Display for DataStoreError {
+//!   #     fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+//!   #         unimplemented!()
+//!   #     }
+//!   # }
+//!   #
+//!   # impl std::error::Error for DataStoreError {}
+//!   #
+//!   # const REDACTED_CONTENT: () = ();
+//!   #
+//!   # let error = anyhow!("...");
+//!   # let root_cause = &error;
+//!   #
+//!   # let ret =
+//!   // If the error was caused by redaction, then return a
+//!   // tombstone instead of the content.
+//!   match root_cause.downcast_ref::<DataStoreError>() {
+//!       Some(DataStoreError::Censored(_)) => Ok(Poll::Ready(REDACTED_CONTENT)),
+//!       None => Err(error),
+//!   }
+//!   # ;
+//!   ```
+//!
+//! - If using Rust &ge; 1.65, a backtrace is captured and printed with the
+//!   error if the underlying error type does not already provide its own. In
+//!   order to see backtraces, they must be enabled through the environment
+//!   variables described in [`std::backtrace`]:
+//!
+//!   - If you want panics and errors to both have backtraces, set
+//!     `RUST_BACKTRACE=1`;
+//!   - If you want only errors to have backtraces, set `RUST_LIB_BACKTRACE=1`;
+//!   - If you want only panics to have backtraces, set `RUST_BACKTRACE=1` and
+//!     `RUST_LIB_BACKTRACE=0`.
+//!
+//!   [`std::backtrace`]: std::backtrace#environment-variables
+//!
+//! - Anyhow works with any error type that has an impl of `std::error::Error`,
+//!   including ones defined in your crate. We do not bundle a `derive(Error)`
+//!   macro but you can write the impls yourself or use a standalone macro like
+//!   [thiserror].
+//!
+//!   [thiserror]: https://github.com/dtolnay/thiserror
+//!
+//!   ```
+//!   use thiserror::Error;
+//!
+//!   #[derive(Error, Debug)]
+//!   pub enum FormatError {
+//!       #[error("Invalid header (expected {expected:?}, got {found:?})")]
+//!       InvalidHeader {
+//!           expected: String,
+//!           found: String,
+//!       },
+//!       #[error("Missing attribute: {0}")]
+//!       MissingAttribute(String),
+//!   }
+//!   ```
+//!
+//! - One-off error messages can be constructed using the `anyhow!` macro, which
+//!   supports string interpolation and produces an `anyhow::Error`.
+//!
+//!   ```
+//!   # use anyhow::{anyhow, Result};
+//!   #
+//!   # fn demo() -> Result<()> {
+//!   #     let missing = "...";
+//!   return Err(anyhow!("Missing attribute: {}", missing));
+//!   #     Ok(())
+//!   # }
+//!   ```
+//!
+//!   A `bail!` macro is provided as a shorthand for the same early return.
+//!
+//!   ```
+//!   # use anyhow::{bail, Result};
+//!   #
+//!   # fn demo() -> Result<()> {
+//!   #     let missing = "...";
+//!   bail!("Missing attribute: {}", missing);
+//!   #     Ok(())
+//!   # }
+//!   ```
+//!
+//! <br>
+//!
+//! # No-std support
+//!
+//! In no_std mode, almost all of the same API is available and works the same
+//! way. To depend on Anyhow in no_std mode, disable our default enabled "std"
+//! feature in Cargo.toml. A global allocator is required.
+//!
+//! ```toml
+//! [dependencies]
+//! anyhow = { version = "1.0", default-features = false }
+//! ```
+//!
+//! With versions of Rust older than 1.81, no_std mode may require an additional
+//! `.map_err(Error::msg)` when working with a non-Anyhow error type inside a
+//! function that returns Anyhow's error type, as the trait that `?`-based error
+//! conversions are defined by is only available in std in those old versions.
+
+#![doc(html_root_url = "https://docs.rs/anyhow/1.0.104")]
+#![cfg_attr(error_generic_member_access, feature(error_generic_member_access))]
+#![no_std]
+#![deny(dead_code, unsafe_op_in_unsafe_fn, unused_imports, unused_mut)]
+#![allow(
+    clippy::doc_markdown,
+    clippy::elidable_lifetime_names,
+    clippy::enum_glob_use,
+    clippy::explicit_auto_deref,
+    clippy::extra_unused_type_parameters,
+    clippy::incompatible_msrv,
+    clippy::let_underscore_untyped,
+    clippy::missing_errors_doc,
+    clippy::missing_panics_doc,
+    clippy::module_name_repetitions,
+    clippy::must_use_candidate,
+    clippy::needless_doctest_main,
+    clippy::needless_lifetimes,
+    clippy::new_ret_no_self,
+    clippy::redundant_else,
+    clippy::return_self_not_must_use,
+    clippy::struct_field_names,
+    clippy::uninlined_format_args,
+    clippy::unused_self,
+    clippy::used_underscore_binding,
+    clippy::wildcard_imports,
+    clippy::wrong_self_convention
+)]
+#![allow(unknown_lints, mismatched_lifetime_syntaxes)]
+
+#[cfg(all(
+    anyhow_nightly_testing,
+    feature = "std",
+    not(error_generic_member_access)
+))]
+compile_error!("Build script probe failed to compile.");
+
+extern crate alloc;
+
+#[cfg(feature = "std")]
+extern crate std;
+
+#[macro_use]
+mod backtrace;
+mod chain;
+mod context;
+mod ensure;
+mod error;
+mod fmt;
+mod kind;
+mod macros;
+#[cfg(error_generic_member_access)]
+mod nightly;
+mod ptr;
+mod wrapper;
+
+use crate::error::ErrorImpl;
+use crate::ptr::Own;
+use core::fmt::Display;
+
+#[cfg(all(not(feature = "std"), anyhow_no_core_error))]
+use core::fmt::Debug;
+
+#[cfg(feature = "std")]
+use std::error::Error as StdError;
+
+#[cfg(not(any(feature = "std", anyhow_no_core_error)))]
+use core::error::Error as StdError;
+
+#[cfg(all(not(feature = "std"), anyhow_no_core_error))]
+trait StdError: Debug + Display {
+    fn source(&self) -> Option<&(dyn StdError + 'static)> {
+        None
+    }
+}
+
+#[doc(no_inline)]
+pub use anyhow as format_err;
+
+/// The `Error` type, a wrapper around a dynamic error type.
+///
+/// `Error` works a lot like `Box<dyn std::error::Error>`, but with these
+/// differences:
+///
+/// - `Error` requires that the error is `Send`, `Sync`, and `'static`.
+/// - `Error` guarantees that a backtrace is available, even if the underlying
+///   error type does not provide one.
+/// - `Error` is represented as a narrow pointer &mdash; exactly one word in
+///   size instead of two.
+///
+/// <br>
+///
+/// # Display representations
+///
+/// When you print an error object using "{}" or to_string(), only the outermost
+/// underlying error or context is printed, not any of the lower level causes.
+/// This is exactly as if you had called the Display impl of the error from
+/// which you constructed your anyhow::Error.
+///
+/// ```console
+/// Failed to read instrs from ./path/to/instrs.json
+/// ```
+///
+/// To print causes as well using anyhow's default formatting of causes, use the
+/// alternate selector "{:#}".
+///
+/// ```console
+/// Failed to read instrs from ./path/to/instrs.json: No such file or directory (os error 2)
+/// ```
+///
+/// The Debug format "{:?}" includes your backtrace if one was captured. Note
+/// that this is the representation you get by default if you return an error
+/// from `fn main` instead of printing it explicitly yourself.
+///
+/// ```console
+/// Error: Failed to read instrs from ./path/to/instrs.json
+///
+/// Caused by:
+///     No such file or directory (os error 2)
+/// ```
+///
+/// and if there is a backtrace available:
+///
+/// ```console
+/// Error: Failed to read instrs from ./path/to/instrs.json
+///
+/// Caused by:
+///     No such file or directory (os error 2)
+///
+/// Stack backtrace:
+///    0: <E as anyhow::context::ext::StdError>::ext_context
+///              at /git/anyhow/src/backtrace.rs:26
+///    1: core::result::Result<T,E>::map_err
+///              at /git/rustc/src/libcore/result.rs:596
+///    2: anyhow::context::<impl anyhow::Context<T,E> for core::result::Result<T,E>>::with_context
+///              at /git/anyhow/src/context.rs:58
+///    3: testing::main
+///              at src/main.rs:5
+///    4: std::rt::lang_start
+///              at /git/rustc/src/libstd/rt.rs:61
+///    5: main
+///    6: __libc_start_main
+///    7: _start
+/// ```
+///
+/// To see a conventional struct-style Debug representation, use "{:#?}".
+///
+/// ```console
+/// Error {
+///     context: "Failed to read instrs from ./path/to/instrs.json",
+///     source: Os {
+///         code: 2,
+///         kind: NotFound,
+///         message: "No such file or directory",
+///     },
+/// }
+/// ```
+///
+/// If none of the built-in representations are appropriate and you would prefer
+/// to render the error and its cause chain yourself, it can be done something
+/// like this:
+///
+/// ```
+/// use anyhow::{Context, Result};
+///
+/// fn main() {
+///     if let Err(err) = try_main() {
+///         eprintln!("ERROR: {}", err);
+///         err.chain().skip(1).for_each(|cause| eprintln!("because: {}", cause));
+///         std::process::exit(1);
+///     }
+/// }
+///
+/// fn try_main() -> Result<()> {
+///     # const IGNORE: &str = stringify! {
+///     ...
+///     # };
+///     # Ok(())
+/// }
+/// ```
+#[repr(transparent)]
+pub struct Error {
+    inner: Own<ErrorImpl>,
+}
+
+/// Iterator of a chain of source errors.
+///
+/// This type is the iterator returned by [`Error::chain`].
+///
+/// # Example
+///
+/// ```
+/// use anyhow::Error;
+/// use std::io;
+///
+/// pub fn underlying_io_error_kind(error: &Error) -> Option<io::ErrorKind> {
+///     for cause in error.chain() {
+///         if let Some(io_error) = cause.downcast_ref::<io::Error>() {
+///             return Some(io_error.kind());
+///         }
+///     }
+///     None
+/// }
+/// ```
+#[cfg(any(feature = "std", not(anyhow_no_core_error)))]
+#[derive(Clone)]
+pub struct Chain<'a> {
+    state: crate::chain::ChainState<'a>,
+}
+
+/// `Result<T, Error>`
+///
+/// This is a reasonable return type to use throughout your application but also
+/// for `fn main`; if you do, failures will be printed along with any
+/// [context][Context] and a backtrace if one was captured.
+///
+/// `anyhow::Result` may be used with one *or* two type parameters.
+///
+/// ```rust
+/// use anyhow::Result;
+///
+/// # const IGNORE: &str = stringify! {
+/// fn demo1() -> Result<T> {...}
+///            // ^ equivalent to std::result::Result<T, anyhow::Error>
+///
+/// fn demo2() -> Result<T, OtherError> {...}
+///            // ^ equivalent to std::result::Result<T, OtherError>
+/// # };
+/// ```
+///
+/// # Example
+///
+/// ```
+/// # pub trait Deserialize {}
+/// #
+/// # mod serde_json {
+/// #     use super::Deserialize;
+/// #     use std::io;
+/// #
+/// #     pub fn from_str<T: Deserialize>(json: &str) -> io::Result<T> {
+/// #         unimplemented!()
+/// #     }
+/// # }
+/// #
+/// # #[derive(Debug)]
+/// # struct ClusterMap;
+/// #
+/// # impl Deserialize for ClusterMap {}
+/// #
+/// use anyhow::Result;
+///
+/// fn main() -> Result<()> {
+///     # return Ok(());
+///     let config = std::fs::read_to_string("cluster.json")?;
+///     let map: ClusterMap = serde_json::from_str(&config)?;
+///     println!("cluster info: {:#?}", map);
+///     Ok(())
+/// }
+/// ```
+pub type Result<T, E = Error> = core::result::Result<T, E>;
+
+/// Provides the `context` method for `Result`.
+///
+/// This trait is sealed and cannot be implemented for types outside of
+/// `anyhow`.
+///
+/// <br>
+///
+/// # Example
+///
+/// ```
+/// use anyhow::{Context, Result};
+/// use std::fs;
+/// use std::path::PathBuf;
+///
+/// pub struct ImportantThing {
+///     path: PathBuf,
+/// }
+///
+/// impl ImportantThing {
+///     # const IGNORE: &'static str = stringify! {
+///     pub fn detach(&mut self) -> Result<()> {...}
+///     # };
+///     # fn detach(&mut self) -> Result<()> {
+///     #     unimplemented!()
+///     # }
+/// }
+///
+/// pub fn do_it(mut it: ImportantThing) -> Result<Vec<u8>> {
+///     it.detach().context("Failed to detach the important thing")?;
+///
+///     let path = &it.path;
+///     let content = fs::read(path)
+///         .with_context(|| format!("Failed to read instrs from {}", path.display()))?;
+///
+///     Ok(content)
+/// }
+/// ```
+///
+/// When printed, the outermost context would be printed first and the lower
+/// level underlying causes would be enumerated below.
+///
+/// ```console
+/// Error: Failed to read instrs from ./path/to/instrs.json
+///
+/// Caused by:
+///     No such file or directory (os error 2)
+/// ```
+///
+/// Refer to the [Display representations] documentation for other forms in
+/// which this context chain can be rendered.
+///
+/// [Display representations]: Error#display-representations
+///
+/// <br>
+///
+/// # Effect on downcasting
+///
+/// After attaching context of type `C` onto an error of type `E`, the resulting
+/// `anyhow::Error` may be downcast to `C` **or** to `E`.
+///
+/// That is, in codebases that rely on downcasting, Anyhow's context supports
+/// both of the following use cases:
+///
+///   - **Attaching context whose type is insignificant onto errors whose type
+///     is used in downcasts.**
+///
+///     In other error libraries whose context is not designed this way, it can
+///     be risky to introduce context to existing code because new context might
+///     break existing working downcasts. In Anyhow, any downcast that worked
+///     before adding context will continue to work after you add a context, so
+///     you should freely add human-readable context to errors wherever it would
+///     be helpful.
+///
+///     ```
+///     # use anyhow::bail;
+///     # use thiserror::Error;
+///     #
+///     # #[derive(Error, Debug)]
+///     # #[error("???")]
+///     # struct SuspiciousError;
+///     #
+///     # fn helper() -> Result<()> {
+///     #     bail!(SuspiciousError);
+///     # }
+///     #
+///     use anyhow::{Context, Result};
+///
+///     fn do_it() -> Result<()> {
+///         helper().context("Failed to complete the work")?;
+///         # const IGNORE: &str = stringify! {
+///         ...
+///         # };
+///         # unreachable!()
+///     }
+///
+///     fn main() {
+///         let err = do_it().unwrap_err();
+///         if let Some(e) = err.downcast_ref::<SuspiciousError>() {
+///             // If helper() returned SuspiciousError, this downcast will
+///             // correctly succeed even with the context in between.
+///             # return;
+///         }
+///         # panic!("expected downcast to succeed");
+///     }
+///     ```
+///
+///   - **Attaching context whose type is used in downcasts onto errors whose
+///     type is insignificant.**
+///
+///     Some codebases prefer to use machine-readable context to categorize
+///     lower level errors in a way that will be actionable to higher levels of
+///     the application.
+///
+///     ```
+///     # use anyhow::bail;
+///     # use thiserror::Error;
+///     #
+///     # #[derive(Error, Debug)]
+///     # #[error("???")]
+///     # struct HelperFailed;
+///     #
+///     # fn helper() -> Result<()> {
+///     #     bail!("no such file or directory");
+///     # }
+///     #
+///     use anyhow::{Context, Result};
+///
+///     fn do_it() -> Result<()> {
+///         helper().context(HelperFailed)?;
+///         # const IGNORE: &str = stringify! {
+///         ...
+///         # };
+///         # unreachable!()
+///     }
+///
+///     fn main() {
+///         let err = do_it().unwrap_err();
+///         if let Some(e) = err.downcast_ref::<HelperFailed>() {
+///             // If helper failed, this downcast will succeed because
+///             // HelperFailed is the context that has been attached to
+///             // that error.
+///             # return;
+///         }
+///         # panic!("expected downcast to succeed");
+///     }
+///     ```
+pub trait Context<T, E>: context::private::Sealed {
+    /// Wrap the error value with additional context.
+    fn context<C>(self, context: C) -> Result<T, Error>
+    where
+        C: Display + Send + Sync + 'static;
+
+    /// Wrap the error value with additional context that is evaluated lazily
+    /// only once an error does occur.
+    fn with_context<C, F>(self, f: F) -> Result<T, Error>
+    where
+        C: Display + Send + Sync + 'static,
+        F: FnOnce() -> C;
+}
+
+/// Equivalent to `Ok::<_, anyhow::Error>(value)`.
+///
+/// This simplifies creation of an `anyhow::Result` in places where type
+/// inference cannot deduce the `E` type of the result &mdash; without needing
+/// to write `Ok::<_, anyhow::Error>(value)`.
+///
+/// One might think that `anyhow::Result::Ok(value)` would work in such cases
+/// but it does not.
+///
+/// ```console
+/// error[E0282]: type annotations needed for `std::result::Result<i32, E>`
+///   --> src/main.rs:11:13
+///    |
+/// 11 |     let _ = anyhow::Result::Ok(1);
+///    |         -   ^^^^^^^^^^^^^^^^^^ cannot infer type for type parameter `E` declared on the enum `Result`
+///    |         |
+///    |         consider giving this pattern the explicit type `std::result::Result<i32, E>`, where the type parameter `E` is specified
+/// ```
+#[allow(non_snake_case)]
+#[inline]
+pub fn Ok<T>(value: T) -> Result<T> {
+    Result::Ok(value)
+}
+
+// Not public API. Referenced by macro-generated code.
+#[doc(hidden)]
+pub mod __private {
+    use self::not::Bool;
+    use crate::Error;
+    use alloc::fmt;
+    use core::fmt::Arguments;
+
+    #[doc(hidden)]
+    pub use crate::ensure::{BothDebug, NotBothDebug};
+    #[doc(hidden)]
+    pub use alloc::format;
+    #[doc(hidden)]
+    pub use core::result::Result::Err;
+    #[doc(hidden)]
+    pub use core::{concat, format_args, stringify};
+
+    #[doc(hidden)]
+    pub mod kind {
+        #[doc(hidden)]
+        pub use crate::kind::{AdhocKind, TraitKind};
+
+        #[cfg(any(feature = "std", not(anyhow_no_core_error)))]
+        #[doc(hidden)]
+        pub use crate::kind::BoxedKind;
+    }
+
+    #[doc(hidden)]
+    #[inline]
+    #[cold]
+    pub fn format_err(args: Arguments) -> Error {
+        if let Some(message) = args.as_str() {
+            // anyhow!("literal"), can downcast to &'static str
+            Error::msg(message)
+        } else {
+            // anyhow!("interpolate {var}"), can downcast to String
+            Error::msg(fmt::format(args))
+        }
+    }
+
+    #[doc(hidden)]
+    #[inline]
+    #[cold]
+    #[must_use]
+    pub fn must_use(error: Error) -> Error {
+        error
+    }
+
+    #[doc(hidden)]
+    #[inline]
+    pub fn not(cond: impl Bool) -> bool {
+        cond.not()
+    }
+
+    mod not {
+        #[doc(hidden)]
+        pub trait Bool {
+            fn not(self) -> bool;
+        }
+
+        impl Bool for bool {
+            #[inline]
+            fn not(self) -> bool {
+                !self
+            }
+        }
+
+        impl Bool for &bool {
+            #[inline]
+            fn not(self) -> bool {
+                !*self
+            }
+        }
+    }
+}
--- a/third_party/crates/anyhow-1.0.104/src/macros.rs
+++ b/third_party/crates/anyhow-1.0.104/src/macros.rs
@@ -0,0 +1,245 @@
+/// Return early with an error.
+///
+/// This macro is equivalent to
+/// <code>return Err([anyhow!($args\...)][anyhow!])</code>.
+///
+/// The surrounding function's or closure's return value is required to be
+/// <code>Result&lt;_, [anyhow::Error][crate::Error]&gt;</code>.
+///
+/// [anyhow!]: crate::anyhow
+///
+/// # Example
+///
+/// ```
+/// # use anyhow::{bail, Result};
+/// #
+/// # fn has_permission(user: usize, resource: usize) -> bool {
+/// #     true
+/// # }
+/// #
+/// # fn main() -> Result<()> {
+/// #     let user = 0;
+/// #     let resource = 0;
+/// #
+/// if !has_permission(user, resource) {
+///     bail!("permission denied for accessing {}", resource);
+/// }
+/// #     Ok(())
+/// # }
+/// ```
+///
+/// ```
+/// # use anyhow::{bail, Result};
+/// # use thiserror::Error;
+/// #
+/// # const MAX_DEPTH: usize = 1;
+/// #
+/// #[derive(Error, Debug)]
+/// enum ScienceError {
+///     #[error("recursion limit exceeded")]
+///     RecursionLimitExceeded,
+///     # #[error("...")]
+///     # More = (stringify! {
+///     ...
+///     # }, 1).1,
+/// }
+///
+/// # fn main() -> Result<()> {
+/// #     let depth = 0;
+/// #
+/// if depth > MAX_DEPTH {
+///     bail!(ScienceError::RecursionLimitExceeded);
+/// }
+/// #     Ok(())
+/// # }
+/// ```
+#[macro_export]
+#[cfg_attr(not(anyhow_no_clippy_format_args), clippy::format_args)]
+macro_rules! bail {
+    ($msg:literal $(,)?) => {
+        return $crate::__private::Err($crate::__anyhow!($msg))
+    };
+    ($err:expr $(,)?) => {
+        return $crate::__private::Err($crate::__anyhow!($err))
+    };
+    ($fmt:expr, $($arg:tt)*) => {
+        return $crate::__private::Err($crate::__anyhow!($fmt, $($arg)*))
+    };
+}
+
+macro_rules! __ensure {
+    ($ensure:item) => {
+        /// Return early with an error if a condition is not satisfied.
+        ///
+        /// This macro is equivalent to
+        /// <code>if !$cond { return Err([anyhow!($args\...)][anyhow!]); }</code>.
+        ///
+        /// The surrounding function's or closure's return value is required to be
+        /// <code>Result&lt;_, [anyhow::Error][crate::Error]&gt;</code>.
+        ///
+        /// Analogously to `assert!`, `ensure!` takes a condition and exits the function
+        /// if the condition fails. Unlike `assert!`, `ensure!` returns an `Error`
+        /// rather than panicking.
+        ///
+        /// [anyhow!]: crate::anyhow
+        ///
+        /// # Example
+        ///
+        /// ```
+        /// # use anyhow::{ensure, Result};
+        /// #
+        /// # fn main() -> Result<()> {
+        /// #     let user = 0;
+        /// #
+        /// ensure!(user == 0, "only user 0 is allowed");
+        /// #     Ok(())
+        /// # }
+        /// ```
+        ///
+        /// ```
+        /// # use anyhow::{ensure, Result};
+        /// # use thiserror::Error;
+        /// #
+        /// # const MAX_DEPTH: usize = 1;
+        /// #
+        /// #[derive(Error, Debug)]
+        /// enum ScienceError {
+        ///     #[error("recursion limit exceeded")]
+        ///     RecursionLimitExceeded,
+        ///     # #[error("...")]
+        ///     # More = (stringify! {
+        ///     ...
+        ///     # }, 1).1,
+        /// }
+        ///
+        /// # fn main() -> Result<()> {
+        /// #     let depth = 0;
+        /// #
+        /// ensure!(depth <= MAX_DEPTH, ScienceError::RecursionLimitExceeded);
+        /// #     Ok(())
+        /// # }
+        /// ```
+        $ensure
+    };
+}
+
+#[cfg(doc)]
+__ensure![
+    #[macro_export]
+    macro_rules! ensure {
+        ($cond:expr $(,)?) => {
+            if !$cond {
+                return $crate::__private::Err($crate::Error::msg(
+                    $crate::__private::concat!("Condition failed: `", $crate::__private::stringify!($cond), "`")
+                ));
+            }
+        };
+        ($cond:expr, $msg:literal $(,)?) => {
+            if !$cond {
+                return $crate::__private::Err($crate::__anyhow!($msg));
+            }
+        };
+        ($cond:expr, $err:expr $(,)?) => {
+            if !$cond {
+                return $crate::__private::Err($crate::__anyhow!($err));
+            }
+        };
+        ($cond:expr, $fmt:expr, $($arg:tt)*) => {
+            if !$cond {
+                return $crate::__private::Err($crate::__anyhow!($fmt, $($arg)*));
+            }
+        };
+    }
+];
+
+#[cfg(not(doc))]
+__ensure![
+    #[macro_export]
+    #[cfg_attr(not(anyhow_no_clippy_format_args), clippy::format_args)]
+    macro_rules! ensure {
+        ($($tt:tt)*) => {
+            $crate::__parse_ensure!(
+                /* state */ 0
+                /* stack */ ()
+                /* bail */ ($($tt)*)
+                /* fuel */ (~~~~~~~~~~ ~~~~~~~~~~ ~~~~~~~~~~ ~~~~~~~~~~ ~~~~~~~~~~ ~~~~~~~~~~ ~~~~~~~~~~ ~~~~~~~~~~ ~~~~~~~~~~ ~~~~~~~~~~ ~~~~~~~~~~ ~~~~~~~~~~)
+                /* parse */ {()}
+                /* dup */ ($($tt)*)
+                /* rest */ $($tt)*
+            )
+        };
+    }
+];
+
+/// Construct an ad-hoc error from a string or existing non-`anyhow` error
+/// value.
+///
+/// This evaluates to an [`Error`][crate::Error]. It can take either just a
+/// string, or a format string with arguments. It also can take any custom type
+/// which implements `Debug` and `Display`.
+///
+/// If called with a single argument whose type implements `std::error::Error`
+/// (in addition to `Debug` and `Display`, which are always required), then that
+/// Error impl's `source` is preserved as the `source` of the resulting
+/// `anyhow::Error`.
+///
+/// # Example
+///
+/// ```
+/// # type V = ();
+/// #
+/// use anyhow::{anyhow, Result};
+///
+/// fn lookup(key: &str) -> Result<V> {
+///     if key.len() != 16 {
+///         return Err(anyhow!("key length must be 16 characters, got {:?}", key));
+///     }
+///
+///     // ...
+///     # Ok(())
+/// }
+/// ```
+#[macro_export]
+#[cfg_attr(not(anyhow_no_clippy_format_args), clippy::format_args)]
+macro_rules! anyhow {
+    ($msg:literal $(,)?) => {
+        $crate::__private::must_use({
+            let error = $crate::__private::format_err($crate::__private::format_args!($msg));
+            error
+        })
+    };
+    ($err:expr $(,)?) => {
+        $crate::__private::must_use({
+            use $crate::__private::kind::*;
+            let error = match $err {
+                error => (&error).anyhow_kind().new(error),
+            };
+            error
+        })
+    };
+    ($fmt:expr, $($arg:tt)*) => {
+        $crate::Error::msg($crate::__private::format!($fmt, $($arg)*))
+    };
+}
+
+// Not public API. This is used in the implementation of some of the other
+// macros, in which the must_use call is not needed because the value is known
+// to be used.
+#[doc(hidden)]
+#[macro_export]
+macro_rules! __anyhow {
+    ($msg:literal $(,)?) => ({
+        let error = $crate::__private::format_err($crate::__private::format_args!($msg));
+        error
+    });
+    ($err:expr $(,)?) => ({
+        use $crate::__private::kind::*;
+        let error = match $err {
+            error => (&error).anyhow_kind().new(error),
+        };
+        error
+    });
+    ($fmt:expr, $($arg:tt)*) => {
+        $crate::Error::msg($crate::__private::format!($fmt, $($arg)*))
+    };
+}
--- a/third_party/crates/anyhow-1.0.104/src/nightly.rs
+++ b/third_party/crates/anyhow-1.0.104/src/nightly.rs
@@ -0,0 +1,58 @@
+// This code exercises the surface area that we expect of the Error generic
+// member access API. If the current toolchain is able to compile it, then
+// anyhow is able to provide backtrace support.
+
+#![cfg_attr(anyhow_build_probe, feature(error_generic_member_access))]
+
+use core::error::{self, Error};
+use std::backtrace::Backtrace;
+
+pub use core::error::Request;
+
+#[cfg(anyhow_build_probe)]
+const _: () = {
+    use core::fmt::{self, Debug, Display};
+
+    struct MyError(Backtrace);
+
+    impl Debug for MyError {
+        fn fmt(&self, _formatter: &mut fmt::Formatter) -> fmt::Result {
+            unimplemented!()
+        }
+    }
+
+    impl Display for MyError {
+        fn fmt(&self, _formatter: &mut fmt::Formatter) -> fmt::Result {
+            unimplemented!()
+        }
+    }
+
+    impl Error for MyError {
+        fn provide<'a>(&'a self, request: &mut Request<'a>) {
+            provide_ref_backtrace(request, &self.0);
+        }
+    }
+};
+
+// Include in sccache cache key.
+#[cfg(anyhow_build_probe)]
+const _: Option<&str> = option_env!("RUSTC_BOOTSTRAP");
+
+pub fn request_ref_backtrace(err: &dyn Error) -> Option<&Backtrace> {
+    request_ref::<Backtrace>(err)
+}
+
+fn request_ref<'a, T>(err: &'a (impl Error + ?Sized)) -> Option<&'a T>
+where
+    T: 'static + ?Sized,
+{
+    error::request_ref::<T>(err)
+}
+
+pub fn provide_ref_backtrace<'a>(request: &mut Request<'a>, backtrace: &'a Backtrace) {
+    Request::provide_ref(request, backtrace);
+}
+
+pub fn provide<'a>(err: &'a (impl Error + ?Sized), request: &mut Request<'a>) {
+    Error::provide(err, request);
+}
--- a/third_party/crates/anyhow-1.0.104/src/ptr.rs
+++ b/third_party/crates/anyhow-1.0.104/src/ptr.rs
@@ -0,0 +1,187 @@
+use alloc::boxed::Box;
+use core::marker::PhantomData;
+use core::ptr::NonNull;
+
+#[repr(transparent)]
+pub struct Own<T>
+where
+    T: ?Sized,
+{
+    pub ptr: NonNull<T>,
+}
+
+unsafe impl<T> Send for Own<T> where T: ?Sized {}
+
+unsafe impl<T> Sync for Own<T> where T: ?Sized {}
+
+impl<T> Copy for Own<T> where T: ?Sized {}
+
+impl<T> Clone for Own<T>
+where
+    T: ?Sized,
+{
+    fn clone(&self) -> Self {
+        *self
+    }
+}
+
+impl<T> Own<T>
+where
+    T: ?Sized,
+{
+    pub fn new(ptr: Box<T>) -> Self {
+        Own {
+            ptr: unsafe { NonNull::new_unchecked(Box::into_raw(ptr)) },
+        }
+    }
+
+    pub fn cast<U: CastTo>(self) -> Own<U::Target> {
+        Own {
+            ptr: self.ptr.cast(),
+        }
+    }
+
+    pub unsafe fn boxed(self) -> Box<T> {
+        unsafe { Box::from_raw(self.ptr.as_ptr()) }
+    }
+
+    pub fn by_ref(&self) -> Ref<T> {
+        Ref {
+            ptr: self.ptr,
+            lifetime: PhantomData,
+        }
+    }
+
+    pub fn by_mut(&mut self) -> Mut<T> {
+        Mut {
+            ptr: self.ptr,
+            lifetime: PhantomData,
+        }
+    }
+}
+
+#[repr(transparent)]
+pub struct Ref<'a, T>
+where
+    T: ?Sized,
+{
+    pub ptr: NonNull<T>,
+    lifetime: PhantomData<&'a T>,
+}
+
+impl<'a, T> Copy for Ref<'a, T> where T: ?Sized {}
+
+impl<'a, T> Clone for Ref<'a, T>
+where
+    T: ?Sized,
+{
+    fn clone(&self) -> Self {
+        *self
+    }
+}
+
+impl<'a, T> Ref<'a, T>
+where
+    T: ?Sized,
+{
+    pub fn new(ptr: &'a T) -> Self {
+        Ref {
+            ptr: NonNull::from(ptr),
+            lifetime: PhantomData,
+        }
+    }
+
+    pub fn from_raw(ptr: NonNull<T>) -> Self {
+        Ref {
+            ptr,
+            lifetime: PhantomData,
+        }
+    }
+
+    pub fn cast<U: CastTo>(self) -> Ref<'a, U::Target> {
+        Ref {
+            ptr: self.ptr.cast(),
+            lifetime: PhantomData,
+        }
+    }
+
+    pub fn by_mut(self) -> Mut<'a, T> {
+        Mut {
+            ptr: self.ptr,
+            lifetime: PhantomData,
+        }
+    }
+
+    pub fn as_ptr(self) -> *const T {
+        self.ptr.as_ptr().cast_const()
+    }
+
+    pub unsafe fn deref(self) -> &'a T {
+        unsafe { &*self.ptr.as_ptr() }
+    }
+}
+
+#[repr(transparent)]
+pub struct Mut<'a, T>
+where
+    T: ?Sized,
+{
+    pub ptr: NonNull<T>,
+    lifetime: PhantomData<&'a mut T>,
+}
+
+impl<'a, T> Copy for Mut<'a, T> where T: ?Sized {}
+
+impl<'a, T> Clone for Mut<'a, T>
+where
+    T: ?Sized,
+{
+    fn clone(&self) -> Self {
+        *self
+    }
+}
+
+impl<'a, T> Mut<'a, T>
+where
+    T: ?Sized,
+{
+    pub fn cast<U: CastTo>(self) -> Mut<'a, U::Target> {
+        Mut {
+            ptr: self.ptr.cast(),
+            lifetime: PhantomData,
+        }
+    }
+
+    pub fn by_ref(self) -> Ref<'a, T> {
+        Ref {
+            ptr: self.ptr,
+            lifetime: PhantomData,
+        }
+    }
+
+    pub fn extend<'b>(self) -> Mut<'b, T> {
+        Mut {
+            ptr: self.ptr,
+            lifetime: PhantomData,
+        }
+    }
+
+    pub unsafe fn deref_mut(self) -> &'a mut T {
+        unsafe { &mut *self.ptr.as_ptr() }
+    }
+}
+
+impl<'a, T> Mut<'a, T> {
+    pub unsafe fn read(self) -> T {
+        unsafe { self.ptr.as_ptr().read() }
+    }
+}
+
+// Force turbofish on all calls of `.cast::<U>()`.
+pub trait CastTo {
+    type Target;
+}
+
+impl<T> CastTo for T {
+    type Target = T;
+}
--- a/third_party/crates/anyhow-1.0.104/src/wrapper.rs
+++ b/third_party/crates/anyhow-1.0.104/src/wrapper.rs
@@ -0,0 +1,84 @@
+use crate::StdError;
+use core::fmt::{self, Debug, Display};
+
+#[cfg(any(feature = "std", not(anyhow_no_core_error)))]
+use alloc::boxed::Box;
+
+#[cfg(error_generic_member_access)]
+use crate::nightly::{self, Request};
+
+#[repr(transparent)]
+pub struct MessageError<M>(pub M);
+
+impl<M> Debug for MessageError<M>
+where
+    M: Display + Debug,
+{
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        Debug::fmt(&self.0, f)
+    }
+}
+
+impl<M> Display for MessageError<M>
+where
+    M: Display + Debug,
+{
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        Display::fmt(&self.0, f)
+    }
+}
+
+impl<M> StdError for MessageError<M> where M: Display + Debug + 'static {}
+
+#[repr(transparent)]
+pub struct DisplayError<M>(pub M);
+
+impl<M> Debug for DisplayError<M>
+where
+    M: Display,
+{
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        Display::fmt(&self.0, f)
+    }
+}
+
+impl<M> Display for DisplayError<M>
+where
+    M: Display,
+{
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        Display::fmt(&self.0, f)
+    }
+}
+
+impl<M> StdError for DisplayError<M> where M: Display + 'static {}
+
+#[cfg(any(feature = "std", not(anyhow_no_core_error)))]
+#[repr(transparent)]
+pub struct BoxedError(pub Box<dyn StdError + Send + Sync>);
+
+#[cfg(any(feature = "std", not(anyhow_no_core_error)))]
+impl Debug for BoxedError {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        Debug::fmt(&self.0, f)
+    }
+}
+
+#[cfg(any(feature = "std", not(anyhow_no_core_error)))]
+impl Display for BoxedError {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        Display::fmt(&self.0, f)
+    }
+}
+
+#[cfg(any(feature = "std", not(anyhow_no_core_error)))]
+impl StdError for BoxedError {
+    fn source(&self) -> Option<&(dyn StdError + 'static)> {
+        self.0.source()
+    }
+
+    #[cfg(error_generic_member_access)]
+    fn provide<'a>(&'a self, request: &mut Request<'a>) {
+        nightly::provide(&*self.0, request);
+    }
+}
--- a/third_party/crates/anyhow-1.0.104/tests/common/mod.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/common/mod.rs
@@ -0,0 +1,14 @@
+use anyhow::{bail, Result};
+use std::io;
+
+pub fn bail_literal() -> Result<()> {
+    bail!("oh no!");
+}
+
+pub fn bail_fmt() -> Result<()> {
+    bail!("{} {}!", "oh", "no");
+}
+
+pub fn bail_error() -> Result<()> {
+    bail!(io::Error::new(io::ErrorKind::Other, "oh no!"));
+}
--- a/third_party/crates/anyhow-1.0.104/tests/compiletest.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/compiletest.rs
@@ -0,0 +1,7 @@
+#[rustversion::attr(not(nightly), ignore = "requires nightly")]
+#[cfg_attr(miri, ignore = "incompatible with miri")]
+#[test]
+fn ui() {
+    let t = trybuild::TestCases::new();
+    t.compile_fail("tests/ui/*.rs");
+}
--- a/third_party/crates/anyhow-1.0.104/tests/drop/mod.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/drop/mod.rs
@@ -0,0 +1,53 @@
+#![allow(clippy::module_name_repetitions)]
+
+use std::error::Error as StdError;
+use std::fmt::{self, Display};
+use std::sync::atomic::{AtomicBool, Ordering};
+use std::sync::Arc;
+
+#[derive(Debug)]
+pub struct Flag {
+    atomic: Arc<AtomicBool>,
+}
+
+impl Flag {
+    pub fn new() -> Self {
+        Flag {
+            atomic: Arc::new(AtomicBool::new(false)),
+        }
+    }
+
+    pub fn get(&self) -> bool {
+        self.atomic.load(Ordering::Relaxed)
+    }
+}
+
+#[derive(Debug)]
+pub struct DetectDrop {
+    has_dropped: Flag,
+}
+
+impl DetectDrop {
+    pub fn new(has_dropped: &Flag) -> Self {
+        DetectDrop {
+            has_dropped: Flag {
+                atomic: Arc::clone(&has_dropped.atomic),
+            },
+        }
+    }
+}
+
+impl StdError for DetectDrop {}
+
+impl Display for DetectDrop {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "oh no!")
+    }
+}
+
+impl Drop for DetectDrop {
+    fn drop(&mut self) {
+        let already_dropped = self.has_dropped.atomic.swap(true, Ordering::Relaxed);
+        assert!(!already_dropped);
+    }
+}
--- a/third_party/crates/anyhow-1.0.104/tests/test_autotrait.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/test_autotrait.rs
@@ -0,0 +1,34 @@
+#![allow(clippy::extra_unused_type_parameters)]
+
+use anyhow::Error;
+use std::panic::{RefUnwindSafe, UnwindSafe};
+
+#[test]
+fn test_send() {
+    fn assert_send<T: Send>() {}
+    assert_send::<Error>();
+}
+
+#[test]
+fn test_sync() {
+    fn assert_sync<T: Sync>() {}
+    assert_sync::<Error>();
+}
+
+#[test]
+fn test_unwind_safe() {
+    fn assert_unwind_safe<T: UnwindSafe>() {}
+    assert_unwind_safe::<Error>();
+}
+
+#[test]
+fn test_ref_unwind_safe() {
+    fn assert_ref_unwind_safe<T: RefUnwindSafe>() {}
+    assert_ref_unwind_safe::<Error>();
+}
+
+#[test]
+fn test_unpin() {
+    fn assert_unpin<T: Unpin>() {}
+    assert_unpin::<Error>();
+}
--- a/third_party/crates/anyhow-1.0.104/tests/test_backtrace.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/test_backtrace.rs
@@ -0,0 +1,15 @@
+#![allow(clippy::let_underscore_untyped)]
+
+#[rustversion::not(nightly)]
+#[ignore = "requires nightly"]
+#[test]
+fn test_backtrace() {}
+
+#[rustversion::nightly]
+#[test]
+fn test_backtrace() {
+    use anyhow::anyhow;
+
+    let error = anyhow!("oh no!");
+    let _ = error.backtrace();
+}
--- a/third_party/crates/anyhow-1.0.104/tests/test_boxed.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/test_boxed.rs
@@ -0,0 +1,45 @@
+#![allow(
+    // Clippy bug: https://github.com/rust-lang/rust-clippy/issues/7422
+    clippy::nonstandard_macro_braces,
+)]
+
+use anyhow::anyhow;
+use std::error::Error as StdError;
+use std::io;
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+#[error("outer")]
+struct MyError {
+    source: io::Error,
+}
+
+#[test]
+fn test_boxed_str() {
+    let error = Box::<dyn StdError + Send + Sync>::from("oh no!");
+    let error = anyhow!(error);
+    assert_eq!("oh no!", error.to_string());
+    assert_eq!(
+        "oh no!",
+        error
+            .downcast_ref::<Box<dyn StdError + Send + Sync>>()
+            .unwrap()
+            .to_string()
+    );
+}
+
+#[test]
+fn test_boxed_thiserror() {
+    let error = MyError {
+        source: io::Error::new(io::ErrorKind::Other, "oh no!"),
+    };
+    let error = anyhow!(error);
+    assert_eq!("oh no!", error.source().unwrap().to_string());
+}
+
+#[test]
+fn test_boxed_anyhow() {
+    let error = anyhow!("oh no!").context("it failed");
+    let error = anyhow!(error);
+    assert_eq!("oh no!", error.source().unwrap().to_string());
+}
--- a/third_party/crates/anyhow-1.0.104/tests/test_chain.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/test_chain.rs
@@ -0,0 +1,69 @@
+use anyhow::{anyhow, Chain, Error};
+
+fn error() -> Error {
+    anyhow!({ 0 }).context(1).context(2).context(3)
+}
+
+#[test]
+fn test_iter() {
+    let e = error();
+    let mut chain = e.chain();
+    assert_eq!("3", chain.next().unwrap().to_string());
+    assert_eq!("2", chain.next().unwrap().to_string());
+    assert_eq!("1", chain.next().unwrap().to_string());
+    assert_eq!("0", chain.next().unwrap().to_string());
+    assert!(chain.next().is_none());
+    assert!(chain.next_back().is_none());
+}
+
+#[test]
+fn test_rev() {
+    let e = error();
+    let mut chain = e.chain().rev();
+    assert_eq!("0", chain.next().unwrap().to_string());
+    assert_eq!("1", chain.next().unwrap().to_string());
+    assert_eq!("2", chain.next().unwrap().to_string());
+    assert_eq!("3", chain.next().unwrap().to_string());
+    assert!(chain.next().is_none());
+    assert!(chain.next_back().is_none());
+}
+
+#[test]
+fn test_len() {
+    let e = error();
+    let mut chain = e.chain();
+    assert_eq!(4, chain.len());
+    assert_eq!((4, Some(4)), chain.size_hint());
+    assert_eq!("3", chain.next().unwrap().to_string());
+    assert_eq!(3, chain.len());
+    assert_eq!((3, Some(3)), chain.size_hint());
+    assert_eq!("0", chain.next_back().unwrap().to_string());
+    assert_eq!(2, chain.len());
+    assert_eq!((2, Some(2)), chain.size_hint());
+    assert_eq!("2", chain.next().unwrap().to_string());
+    assert_eq!(1, chain.len());
+    assert_eq!((1, Some(1)), chain.size_hint());
+    assert_eq!("1", chain.next_back().unwrap().to_string());
+    assert_eq!(0, chain.len());
+    assert_eq!((0, Some(0)), chain.size_hint());
+    assert!(chain.next().is_none());
+}
+
+#[test]
+fn test_default() {
+    let mut c = Chain::default();
+    assert!(c.next().is_none());
+}
+
+#[test]
+#[allow(clippy::redundant_clone)]
+fn test_clone() {
+    let e = error();
+    let mut chain = e.chain().clone();
+    assert_eq!("3", chain.next().unwrap().to_string());
+    assert_eq!("2", chain.next().unwrap().to_string());
+    assert_eq!("1", chain.next().unwrap().to_string());
+    assert_eq!("0", chain.next().unwrap().to_string());
+    assert!(chain.next().is_none());
+    assert!(chain.next_back().is_none());
+}
--- a/third_party/crates/anyhow-1.0.104/tests/test_context.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/test_context.rs
@@ -0,0 +1,195 @@
+#![allow(
+    // Clippy bug: https://github.com/rust-lang/rust-clippy/issues/7422
+    clippy::nonstandard_macro_braces,
+)]
+
+mod drop;
+
+use crate::drop::{DetectDrop, Flag};
+use anyhow::{Context, Error, Result};
+use std::fmt::{self, Display};
+use thiserror::Error;
+
+// https://github.com/dtolnay/anyhow/issues/18
+#[test]
+fn test_inference() -> Result<()> {
+    let x = "1";
+    let y: u32 = x.parse().context("...")?;
+    assert_eq!(y, 1);
+    Ok(())
+}
+
+macro_rules! context_type {
+    ($name:ident) => {
+        #[derive(Debug)]
+        struct $name {
+            message: &'static str,
+            #[allow(dead_code)]
+            drop: DetectDrop,
+        }
+
+        impl Display for $name {
+            fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+                f.write_str(self.message)
+            }
+        }
+    };
+}
+
+context_type!(HighLevel);
+context_type!(MidLevel);
+
+#[derive(Error, Debug)]
+#[error("{message}")]
+struct LowLevel {
+    message: &'static str,
+    drop: DetectDrop,
+}
+
+struct Dropped {
+    low: Flag,
+    mid: Flag,
+    high: Flag,
+}
+
+impl Dropped {
+    fn none(&self) -> bool {
+        !self.low.get() && !self.mid.get() && !self.high.get()
+    }
+
+    fn all(&self) -> bool {
+        self.low.get() && self.mid.get() && self.high.get()
+    }
+}
+
+fn make_chain() -> (Error, Dropped) {
+    let dropped = Dropped {
+        low: Flag::new(),
+        mid: Flag::new(),
+        high: Flag::new(),
+    };
+
+    let low = LowLevel {
+        message: "no such file or directory",
+        drop: DetectDrop::new(&dropped.low),
+    };
+
+    // impl Context for Result<T, E>
+    let mid = Err::<(), LowLevel>(low)
+        .context(MidLevel {
+            message: "failed to load config",
+            drop: DetectDrop::new(&dropped.mid),
+        })
+        .unwrap_err();
+
+    // impl Context for Result<T, Error>
+    let high = Err::<(), Error>(mid)
+        .context(HighLevel {
+            message: "failed to start server",
+            drop: DetectDrop::new(&dropped.high),
+        })
+        .unwrap_err();
+
+    (high, dropped)
+}
+
+#[test]
+fn test_downcast_ref() {
+    let (err, dropped) = make_chain();
+
+    assert!(!err.is::<String>());
+    assert!(err.downcast_ref::<String>().is_none());
+
+    assert!(err.is::<HighLevel>());
+    let high = err.downcast_ref::<HighLevel>().unwrap();
+    assert_eq!(high.to_string(), "failed to start server");
+
+    assert!(err.is::<MidLevel>());
+    let mid = err.downcast_ref::<MidLevel>().unwrap();
+    assert_eq!(mid.to_string(), "failed to load config");
+
+    assert!(err.is::<LowLevel>());
+    let low = err.downcast_ref::<LowLevel>().unwrap();
+    assert_eq!(low.to_string(), "no such file or directory");
+
+    assert!(dropped.none());
+    drop(err);
+    assert!(dropped.all());
+}
+
+#[test]
+fn test_downcast_high() {
+    let (err, dropped) = make_chain();
+
+    let err = err.downcast::<HighLevel>().unwrap();
+    assert!(!dropped.high.get());
+    assert!(dropped.low.get() && dropped.mid.get());
+
+    drop(err);
+    assert!(dropped.all());
+}
+
+#[test]
+fn test_downcast_mid() {
+    let (err, dropped) = make_chain();
+
+    let err = err.downcast::<MidLevel>().unwrap();
+    assert!(!dropped.mid.get());
+    assert!(dropped.low.get() && dropped.high.get());
+
+    drop(err);
+    assert!(dropped.all());
+}
+
+#[test]
+fn test_downcast_low() {
+    let (err, dropped) = make_chain();
+
+    let err = err.downcast::<LowLevel>().unwrap();
+    assert!(!dropped.low.get());
+    assert!(dropped.mid.get() && dropped.high.get());
+
+    drop(err);
+    assert!(dropped.all());
+}
+
+#[test]
+fn test_unsuccessful_downcast() {
+    let (err, dropped) = make_chain();
+
+    let err = err.downcast::<String>().unwrap_err();
+    assert!(dropped.none());
+
+    drop(err);
+    assert!(dropped.all());
+}
+
+#[test]
+fn test_downcast_mut() {
+    let (mut err, dropped) = make_chain();
+
+    err.downcast_mut::<HighLevel>().unwrap().message = "high context";
+    err.downcast_mut::<MidLevel>().unwrap().message = "mid context";
+    err.downcast_mut::<LowLevel>().unwrap().message = "low error";
+
+    assert_eq!(
+        err.downcast_ref::<HighLevel>().unwrap().message,
+        "high context",
+    );
+    assert_eq!(
+        err.downcast_ref::<MidLevel>().unwrap().message,
+        "mid context",
+    );
+    assert_eq!(err.downcast_ref::<LowLevel>().unwrap().message, "low error");
+
+    assert!(dropped.none());
+    drop(err);
+    assert!(dropped.all());
+}
+
+#[test]
+fn test_root_cause() {
+    let (err, _) = make_chain();
+
+    assert_eq!(err.root_cause().to_string(), "no such file or directory");
+}
--- a/third_party/crates/anyhow-1.0.104/tests/test_convert.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/test_convert.rs
@@ -0,0 +1,46 @@
+#![allow(clippy::unnecessary_wraps)]
+
+mod drop;
+
+use self::drop::{DetectDrop, Flag};
+use anyhow::{Error, Result};
+use std::error::Error as StdError;
+
+#[test]
+fn test_convert() {
+    let has_dropped = Flag::new();
+    let error = Error::new(DetectDrop::new(&has_dropped));
+    let box_dyn = Box::<dyn StdError>::from(error);
+    assert_eq!("oh no!", box_dyn.to_string());
+    drop(box_dyn);
+    assert!(has_dropped.get());
+}
+
+#[test]
+fn test_convert_send() {
+    let has_dropped = Flag::new();
+    let error = Error::new(DetectDrop::new(&has_dropped));
+    let box_dyn = Box::<dyn StdError + Send>::from(error);
+    assert_eq!("oh no!", box_dyn.to_string());
+    drop(box_dyn);
+    assert!(has_dropped.get());
+}
+
+#[test]
+fn test_convert_send_sync() {
+    let has_dropped = Flag::new();
+    let error = Error::new(DetectDrop::new(&has_dropped));
+    let box_dyn = Box::<dyn StdError + Send + Sync>::from(error);
+    assert_eq!("oh no!", box_dyn.to_string());
+    drop(box_dyn);
+    assert!(has_dropped.get());
+}
+
+#[test]
+fn test_question_mark() -> Result<(), Box<dyn StdError>> {
+    fn f() -> Result<()> {
+        Ok(())
+    }
+    f()?;
+    Ok(())
+}
--- a/third_party/crates/anyhow-1.0.104/tests/test_downcast.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/test_downcast.rs
@@ -0,0 +1,123 @@
+#![allow(clippy::assertions_on_result_states, clippy::wildcard_imports)]
+
+mod common;
+mod drop;
+
+use self::common::*;
+use self::drop::{DetectDrop, Flag};
+use anyhow::Error;
+use std::error::Error as StdError;
+use std::fmt::{self, Display};
+use std::io;
+
+#[test]
+fn test_downcast() {
+    assert_eq!(
+        "oh no!",
+        bail_literal().unwrap_err().downcast::<&str>().unwrap(),
+    );
+    assert_eq!(
+        "oh no!",
+        bail_fmt().unwrap_err().downcast::<String>().unwrap(),
+    );
+    assert_eq!(
+        "oh no!",
+        bail_error()
+            .unwrap_err()
+            .downcast::<io::Error>()
+            .unwrap()
+            .to_string(),
+    );
+}
+
+#[test]
+fn test_downcast_ref() {
+    assert_eq!(
+        "oh no!",
+        *bail_literal().unwrap_err().downcast_ref::<&str>().unwrap(),
+    );
+    assert_eq!(
+        "oh no!",
+        bail_fmt().unwrap_err().downcast_ref::<String>().unwrap(),
+    );
+    assert_eq!(
+        "oh no!",
+        bail_error()
+            .unwrap_err()
+            .downcast_ref::<io::Error>()
+            .unwrap()
+            .to_string(),
+    );
+}
+
+#[test]
+fn test_downcast_mut() {
+    assert_eq!(
+        "oh no!",
+        *bail_literal().unwrap_err().downcast_mut::<&str>().unwrap(),
+    );
+    assert_eq!(
+        "oh no!",
+        bail_fmt().unwrap_err().downcast_mut::<String>().unwrap(),
+    );
+    assert_eq!(
+        "oh no!",
+        bail_error()
+            .unwrap_err()
+            .downcast_mut::<io::Error>()
+            .unwrap()
+            .to_string(),
+    );
+
+    let mut bailed = bail_fmt().unwrap_err();
+    *bailed.downcast_mut::<String>().unwrap() = "clobber".to_string();
+    assert_eq!(bailed.downcast_ref::<String>().unwrap(), "clobber");
+    assert_eq!(bailed.downcast_mut::<String>().unwrap(), "clobber");
+    assert_eq!(bailed.downcast::<String>().unwrap(), "clobber");
+}
+
+#[test]
+fn test_drop() {
+    let has_dropped = Flag::new();
+    let error = Error::new(DetectDrop::new(&has_dropped));
+    drop(error.downcast::<DetectDrop>().unwrap());
+    assert!(has_dropped.get());
+}
+
+#[test]
+fn test_as_ref() {
+    let error = bail_error().unwrap_err();
+    let ref_dyn: &dyn StdError = error.as_ref();
+    assert_eq!("oh no!", ref_dyn.to_string());
+    let ref_dyn_send_sync: &(dyn StdError + Send + Sync) = error.as_ref();
+    assert_eq!("oh no!", ref_dyn_send_sync.to_string());
+}
+
+#[test]
+fn test_large_alignment() {
+    #[repr(align(64))]
+    #[derive(Debug)]
+    struct LargeAlignedError(&'static str);
+
+    impl Display for LargeAlignedError {
+        fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+            f.write_str(self.0)
+        }
+    }
+
+    impl StdError for LargeAlignedError {}
+
+    let error = Error::new(LargeAlignedError("oh no!"));
+    assert_eq!(
+        "oh no!",
+        error.downcast_ref::<LargeAlignedError>().unwrap().0
+    );
+}
+
+#[test]
+fn test_unsuccessful_downcast() {
+    let mut error = bail_error().unwrap_err();
+    assert!(error.downcast_ref::<&str>().is_none());
+    assert!(error.downcast_mut::<&str>().is_none());
+    assert!(error.downcast::<&str>().is_err());
+}
--- a/third_party/crates/anyhow-1.0.104/tests/test_ensure.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/test_ensure.rs
@@ -0,0 +1,756 @@
+#![allow(
+    clippy::bool_to_int_with_if,
+    clippy::char_lit_as_u8,
+    clippy::deref_addrof,
+    clippy::diverging_sub_expression,
+    clippy::erasing_op,
+    clippy::extra_unused_type_parameters,
+    clippy::if_same_then_else,
+    clippy::ifs_same_cond,
+    clippy::ignored_unit_patterns,
+    clippy::items_after_statements,
+    clippy::let_and_return,
+    clippy::let_underscore_untyped,
+    clippy::literal_string_with_formatting_args,
+    clippy::match_bool,
+    clippy::needless_else,
+    clippy::never_loop,
+    clippy::overly_complex_bool_expr,
+    clippy::ptr_cast_constness,
+    clippy::redundant_closure_call,
+    clippy::redundant_pattern_matching,
+    clippy::too_many_lines,
+    clippy::uninlined_format_args,
+    clippy::unit_arg,
+    clippy::unnecessary_cast,
+    clippy::while_immutable_condition,
+    clippy::zero_ptr,
+    irrefutable_let_patterns
+)]
+
+use self::Enum::Generic;
+use anyhow::{anyhow, ensure, Chain, Error, Result};
+use std::fmt::{self, Debug};
+use std::iter;
+use std::marker::{PhantomData, PhantomData as P};
+use std::mem;
+use std::ops::Add;
+use std::ptr;
+
+struct S;
+
+impl<T> Add<T> for S {
+    type Output = bool;
+    fn add(self, rhs: T) -> Self::Output {
+        let _ = rhs;
+        false
+    }
+}
+
+trait Trait: Sized {
+    const V: usize = 0;
+    fn t(self, i: i32) -> i32 {
+        i
+    }
+}
+
+impl<T> Trait for T {}
+
+enum Enum<T: ?Sized> {
+    #[allow(dead_code)]
+    Thing(PhantomData<T>),
+    Generic,
+}
+
+impl<T: ?Sized> PartialEq for Enum<T> {
+    fn eq(&self, rhs: &Self) -> bool {
+        mem::discriminant(self) == mem::discriminant(rhs)
+    }
+}
+
+impl<T: ?Sized> Debug for Enum<T> {
+    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+        formatter.write_str("Generic")
+    }
+}
+
+#[track_caller]
+fn assert_err<T: Debug>(result: impl FnOnce() -> Result<T>, expected: &'static str) {
+    let actual = result().unwrap_err().to_string();
+
+    // In general different rustc versions will format the interpolated lhs and
+    // rhs $:expr fragment with insignificant differences in whitespace or
+    // punctuation, so we check the message in full against nightly and do just
+    // a cursory test on older toolchains.
+    if rustversion::cfg!(nightly) && !cfg!(miri) {
+        assert_eq!(actual, expected);
+    } else {
+        assert_eq!(actual.contains(" vs "), expected.contains(" vs "));
+    }
+}
+
+#[test]
+fn test_recursion() {
+    // Must not blow the default #[recursion_limit], which is 128.
+    #[rustfmt::skip]
+    let test = || Ok(ensure!(
+        false | false | false | false | false | false | false | false | false |
+        false | false | false | false | false | false | false | false | false |
+        false | false | false | false | false | false | false | false | false |
+        false | false | false | false | false | false | false | false | false |
+        false | false | false | false | false | false | false | false | false |
+        false | false | false | false | false | false | false | false | false |
+        false | false | false | false | false | false | false | false | false
+    ));
+
+    test().unwrap_err();
+}
+
+#[test]
+fn test_low_precedence_control_flow() {
+    #[allow(unreachable_code)]
+    let test = || {
+        let val = loop {
+            // Break has lower precedence than the comparison operators so the
+            // expression here is `S + (break (1 == 1))`. It would be bad if the
+            // ensure macro partitioned this input into `(S + break 1) == (1)`
+            // because that means a different thing than what was written.
+            ensure!(S + break 1 == 1);
+        };
+        Ok(val)
+    };
+
+    assert!(test().unwrap());
+}
+
+#[test]
+fn test_low_precedence_binary_operator() {
+    // Must not partition as `false == (true && false)`.
+    let test = || Ok(ensure!(false == true && false));
+    assert_err(test, "Condition failed: `false == true && false`");
+
+    // But outside the root level, it is fine.
+    let test = || Ok(ensure!(while false == true && false {} < ()));
+    assert_err(
+        test,
+        "Condition failed: `while false == true && false {} < ()` (() vs ())",
+    );
+
+    let a = 15;
+    let b = 3;
+    let test = || Ok(ensure!(a <= b || a - b <= 10));
+    assert_err(test, "Condition failed: `a <= b || a - b <= 10`");
+}
+
+#[test]
+fn test_high_precedence_binary_operator() {
+    let a = 15;
+    let b = 3;
+    let test = || Ok(ensure!(a - b <= 10));
+    assert_err(test, "Condition failed: `a - b <= 10` (12 vs 10)");
+}
+
+#[test]
+fn test_closure() {
+    // Must not partition as `(S + move) || (1 == 1)` by treating move as an
+    // identifier, nor as `(S + move || 1) == (1)` by misinterpreting the
+    // closure precedence.
+    let test = || Ok(ensure!(S + move || 1 == 1));
+    assert_err(test, "Condition failed: `S + move || 1 == 1`");
+
+    let test = || Ok(ensure!(S + || 1 == 1));
+    assert_err(test, "Condition failed: `S + || 1 == 1`");
+
+    // Must not partition as `S + ((move | ()) | 1) == 1` by treating those
+    // pipes as bitwise-or.
+    let test = || Ok(ensure!(S + move |()| 1 == 1));
+    assert_err(test, "Condition failed: `S + move |()| 1 == 1`");
+
+    let test = || Ok(ensure!(S + |()| 1 == 1));
+    assert_err(test, "Condition failed: `S + |()| 1 == 1`");
+}
+
+#[test]
+fn test_unary() {
+    let mut x = &1;
+    let test = || Ok(ensure!(*x == 2));
+    assert_err(test, "Condition failed: `*x == 2` (1 vs 2)");
+
+    let test = || Ok(ensure!(!x == 1));
+    assert_err(test, "Condition failed: `!x == 1` (-2 vs 1)");
+
+    let test = || Ok(ensure!(-x == 1));
+    assert_err(test, "Condition failed: `-x == 1` (-1 vs 1)");
+
+    let test = || Ok(ensure!(&x == &&2));
+    assert_err(test, "Condition failed: `&x == &&2` (1 vs 2)");
+
+    let test = || Ok(ensure!(&mut x == *&&mut &2));
+    assert_err(test, "Condition failed: `&mut x == *&&mut &2` (1 vs 2)");
+}
+
+#[rustversion::since(1.82)]
+#[test]
+fn test_raw_addr() {
+    let mut x = 1;
+    let test = || Ok(ensure!(S + &raw const x != S + &raw mut x));
+    assert_err(
+        test,
+        "Condition failed: `S + &raw const x != S + &raw mut x` (false vs false)",
+    );
+}
+
+#[test]
+fn test_if() {
+    #[rustfmt::skip]
+    let test = || Ok(ensure!(if false {}.t(1) == 2));
+    assert_err(test, "Condition failed: `if false {}.t(1) == 2` (1 vs 2)");
+
+    #[rustfmt::skip]
+    let test = || Ok(ensure!(if false {} else {}.t(1) == 2));
+    assert_err(
+        test,
+        "Condition failed: `if false {} else {}.t(1) == 2` (1 vs 2)",
+    );
+
+    #[rustfmt::skip]
+    let test = || Ok(ensure!(if false {} else if false {}.t(1) == 2));
+    assert_err(
+        test,
+        "Condition failed: `if false {} else if false {}.t(1) == 2` (1 vs 2)",
+    );
+
+    #[rustfmt::skip]
+    let test = || Ok(ensure!(if let 1 = 2 {}.t(1) == 2));
+    assert_err(
+        test,
+        "Condition failed: `if let 1 = 2 {}.t(1) == 2` (1 vs 2)",
+    );
+
+    #[rustfmt::skip]
+    let test = || Ok(ensure!(if let 1 | 2 = 2 {}.t(1) == 2));
+    assert_err(
+        test,
+        "Condition failed: `if let 1 | 2 = 2 {}.t(1) == 2` (1 vs 2)",
+    );
+
+    #[rustfmt::skip]
+    let test = || Ok(ensure!(if let | 1 | 2 = 2 {}.t(1) == 2));
+    assert_err(
+        test,
+        "Condition failed: `if let | 1 | 2 = 2 {}.t(1) == 2` (1 vs 2)",
+    );
+}
+
+#[test]
+fn test_loop() {
+    #[rustfmt::skip]
+    let test = || Ok(ensure!(1 + loop { break 1 } == 1));
+    assert_err(
+        test,
+        "Condition failed: `1 + loop { break 1 } == 1` (2 vs 1)",
+    );
+
+    #[rustfmt::skip]
+    let test = || Ok(ensure!(1 + 'a: loop { break 'a 1 } == 1));
+    assert_err(
+        test,
+        "Condition failed: `1 + 'a: loop { break 'a 1 } == 1` (2 vs 1)",
+    );
+
+    #[rustfmt::skip]
+    let test = || Ok(ensure!(while false {}.t(1) == 2));
+    assert_err(
+        test,
+        "Condition failed: `while false {}.t(1) == 2` (1 vs 2)",
+    );
+
+    #[rustfmt::skip]
+    let test = || Ok(ensure!(while let None = Some(1) {}.t(1) == 2));
+    assert_err(
+        test,
+        "Condition failed: `while let None = Some(1) {}.t(1) == 2` (1 vs 2)",
+    );
+
+    #[rustfmt::skip]
+    let test = || Ok(ensure!(for _x in iter::once(0) {}.t(1) == 2));
+    assert_err(
+        test,
+        "Condition failed: `for _x in iter::once(0) {}.t(1) == 2` (1 vs 2)",
+    );
+
+    #[rustfmt::skip]
+    let test = || Ok(ensure!(for | _x in iter::once(0) {}.t(1) == 2));
+    assert_err(
+        test,
+        "Condition failed: `for | _x in iter::once(0) {}.t(1) == 2` (1 vs 2)",
+    );
+
+    #[rustfmt::skip]
+    let test = || Ok(ensure!(for true | false in iter::empty() {}.t(1) == 2));
+    assert_err(
+        test,
+        "Condition failed: `for true | false in iter::empty() {}.t(1) == 2` (1 vs 2)",
+    );
+}
+
+#[test]
+fn test_match() {
+    #[rustfmt::skip]
+    let test = || Ok(ensure!(match 1 == 1 { true => 1, false => 0 } == 2));
+    assert_err(
+        test,
+        "Condition failed: `match 1 == 1 { true => 1, false => 0 } == 2` (1 vs 2)",
+    );
+}
+
+#[test]
+fn test_atom() {
+    let test = || Ok(ensure!([false, false].len() > 3));
+    assert_err(
+        test,
+        "Condition failed: `[false, false].len() > 3` (2 vs 3)",
+    );
+
+    #[rustfmt::skip]
+    let test = || Ok(ensure!({ let x = 1; x } >= 3));
+    assert_err(test, "Condition failed: `{ let x = 1; x } >= 3` (1 vs 3)");
+
+    let test = || Ok(ensure!(S + async { 1 } == true));
+    assert_err(
+        test,
+        "Condition failed: `S + async { 1 } == true` (false vs true)",
+    );
+
+    let test = || Ok(ensure!(S + async move { 1 } == true));
+    assert_err(
+        test,
+        "Condition failed: `S + async move { 1 } == true` (false vs true)",
+    );
+
+    let x = &1;
+    let test = || Ok(ensure!(S + unsafe { ptr::read(x) } == true));
+    assert_err(
+        test,
+        "Condition failed: `S + unsafe { ptr::read(x) } == true` (false vs true)",
+    );
+}
+
+#[test]
+fn test_path() {
+    let test = || Ok(ensure!(crate::S.t(1) == 2));
+    assert_err(test, "Condition failed: `crate::S.t(1) == 2` (1 vs 2)");
+
+    let test = || Ok(ensure!(::anyhow::Error::root_cause.t(1) == 2));
+    assert_err(
+        test,
+        "Condition failed: `::anyhow::Error::root_cause.t(1) == 2` (1 vs 2)",
+    );
+
+    let test = || Ok(ensure!(Error::msg::<&str>.t(1) == 2));
+    assert_err(
+        test,
+        "Condition failed: `Error::msg::<&str>.t(1) == 2` (1 vs 2)",
+    );
+
+    #[rustfmt::skip]
+    let test = || Ok(ensure!(Error::msg::<&str,>.t(1) == 2));
+    assert_err(
+        test,
+        "Condition failed: `Error::msg::<&str,>.t(1) == 2` (1 vs 2)",
+    );
+
+    let test = || Ok(ensure!(Error::msg::<<str as ToOwned>::Owned>.t(1) == 2));
+    assert_err(
+        test,
+        "Condition failed: `Error::msg::<<str as ToOwned>::Owned>.t(1) == 2` (1 vs 2)",
+    );
+
+    let test = || Ok(ensure!(Chain::<'static>::new.t(1) == 2));
+    assert_err(
+        test,
+        "Condition failed: `Chain::<'static>::new.t(1) == 2` (1 vs 2)",
+    );
+
+    #[rustfmt::skip]
+    let test = || Ok(ensure!(Chain::<'static,>::new.t(1) == 2));
+    assert_err(
+        test,
+        "Condition failed: `Chain::<'static,>::new.t(1) == 2` (1 vs 2)",
+    );
+
+    fn f<const I: isize>() {}
+    let test = || Ok(ensure!(f::<1>() != ()));
+    assert_err(test, "Condition failed: `f::<1>() != ()` (() vs ())");
+    let test = || Ok(ensure!(f::<-1>() != ()));
+    assert_err(test, "Condition failed: `f::<-1>() != ()` (() vs ())");
+
+    fn g<T, const I: isize>() {}
+    let test = || Ok(ensure!(g::<u8, 1>() != ()));
+    assert_err(test, "Condition failed: `g::<u8, 1>() != ()` (() vs ())");
+    let test = || Ok(ensure!(g::<u8, -1>() != ()));
+    assert_err(test, "Condition failed: `g::<u8, -1>() != ()` (() vs ())");
+
+    #[derive(PartialOrd, PartialEq, Debug)]
+    enum E<'a, T> {
+        #[allow(dead_code)]
+        T(&'a T),
+        U,
+    }
+
+    #[rustfmt::skip]
+    let test = || Ok(ensure!(E::U::<>>E::U::<u8>));
+    assert_err(test, "Condition failed: `E::U::<> > E::U::<u8>` (U vs U)");
+
+    #[rustfmt::skip]
+    let test = || Ok(ensure!(E::U::<u8>>E::U));
+    assert_err(test, "Condition failed: `E::U::<u8> > E::U` (U vs U)");
+
+    #[rustfmt::skip]
+    let test = || Ok(ensure!(E::U::<u8,>>E::U));
+    assert_err(test, "Condition failed: `E::U::<u8,> > E::U` (U vs U)");
+
+    let test = || Ok(ensure!(Generic::<dyn Debug + Sync> != Generic));
+    assert_err(
+        test,
+        "Condition failed: `Generic::<dyn Debug + Sync> != Generic` (Generic vs Generic)",
+    );
+
+    let test = || Ok(ensure!(Generic::<dyn Fn() + Sync> != Generic));
+    assert_err(
+        test,
+        "Condition failed: `Generic::<dyn Fn() + Sync> != Generic` (Generic vs Generic)",
+    );
+
+    #[rustfmt::skip]
+    let test = || {
+        Ok(ensure!(
+            Generic::<dyn Fn::() + ::std::marker::Sync> != Generic
+        ))
+    };
+    assert_err(
+        test,
+        "Condition failed: `Generic::<dyn Fn::() + ::std::marker::Sync> != Generic` (Generic vs Generic)",
+    );
+}
+
+#[test]
+fn test_macro() {
+    let test = || Ok(ensure!(anyhow!("...").to_string().len() <= 1));
+    assert_err(
+        test,
+        "Condition failed: `anyhow!(\"...\").to_string().len() <= 1` (3 vs 1)",
+    );
+
+    let test = || Ok(ensure!(vec![1].len() < 1));
+    assert_err(test, "Condition failed: `vec![1].len() < 1` (1 vs 1)");
+
+    let test = || Ok(ensure!(stringify! {} != ""));
+    assert_err(
+        test,
+        "Condition failed: `stringify! {} != \"\"` (\"\" vs \"\")",
+    );
+}
+
+#[test]
+fn test_trailer() {
+    let test = || Ok(ensure!((|| 1)() == 2));
+    assert_err(test, "Condition failed: `(|| 1)() == 2` (1 vs 2)");
+
+    let test = || Ok(ensure!(b"hmm"[1] == b'c'));
+    assert_err(test, "Condition failed: `b\"hmm\"[1] == b'c'` (109 vs 99)");
+
+    let test = || Ok(ensure!(PhantomData::<u8> {} != PhantomData));
+    assert_err(
+        test,
+        "Condition failed: `PhantomData::<u8> {} != PhantomData` (PhantomData<u8> vs PhantomData<u8>)",
+    );
+
+    let result = Ok::<_, Error>(1);
+    let test = || Ok(ensure!(result? == 2));
+    assert_err(test, "Condition failed: `result? == 2` (1 vs 2)");
+
+    let test = || Ok(ensure!((2, 3).1 == 2));
+    assert_err(test, "Condition failed: `(2, 3).1 == 2` (3 vs 2)");
+
+    #[rustfmt::skip]
+    let test = || Ok(ensure!((2, (3, 4)). 1.1 == 2));
+    assert_err(test, "Condition failed: `(2, (3, 4)).1.1 == 2` (4 vs 2)");
+
+    let err = anyhow!("");
+    let test = || Ok(ensure!(err.is::<&str>() == false));
+    assert_err(
+        test,
+        "Condition failed: `err.is::<&str>() == false` (true vs false)",
+    );
+
+    let test = || Ok(ensure!(err.is::<<str as ToOwned>::Owned>() == true));
+    assert_err(
+        test,
+        "Condition failed: `err.is::<<str as ToOwned>::Owned>() == true` (false vs true)",
+    );
+}
+
+#[test]
+fn test_whitespace() {
+    #[derive(Debug)]
+    pub struct Point {
+        #[allow(dead_code)]
+        pub x: i32,
+        #[allow(dead_code)]
+        pub y: i32,
+    }
+
+    let point = Point { x: 0, y: 0 };
+    let test = || Ok(ensure!("" == format!("{:#?}", point)));
+    assert_err(
+        test,
+        "Condition failed: `\"\" == format!(\"{:#?}\", point)`",
+    );
+}
+
+#[test]
+fn test_too_long() {
+    let test = || Ok(ensure!("" == "x".repeat(10)));
+    assert_err(
+        test,
+        "Condition failed: `\"\" == \"x\".repeat(10)` (\"\" vs \"xxxxxxxxxx\")",
+    );
+
+    let test = || Ok(ensure!("" == "x".repeat(80)));
+    assert_err(test, "Condition failed: `\"\" == \"x\".repeat(80)`");
+}
+
+#[test]
+fn test_as() {
+    let test = || Ok(ensure!('\0' as u8 > 1));
+    assert_err(test, "Condition failed: `'\\0' as u8 > 1` (0 vs 1)");
+
+    let test = || Ok(ensure!('\0' as ::std::primitive::u8 > 1));
+    assert_err(
+        test,
+        "Condition failed: `'\\0' as ::std::primitive::u8 > 1` (0 vs 1)",
+    );
+
+    let test = || Ok(ensure!(&[0] as &[i32] == [1]));
+    assert_err(
+        test,
+        "Condition failed: `&[0] as &[i32] == [1]` ([0] vs [1])",
+    );
+
+    let test = || Ok(ensure!(0 as *const () as *mut _ == 1 as *mut ()));
+    assert_err(
+        test,
+        "Condition failed: `0 as *const () as *mut _ == 1 as *mut ()` (0x0 vs 0x1)",
+    );
+
+    let s = "";
+    let test = || Ok(ensure!(s as &str != s));
+    assert_err(test, "Condition failed: `s as &str != s` (\"\" vs \"\")");
+
+    let test = || Ok(ensure!(&s as &&str != &s));
+    assert_err(test, "Condition failed: `&s as &&str != &s` (\"\" vs \"\")");
+
+    let test = || Ok(ensure!(s as &'static str != s));
+    assert_err(
+        test,
+        "Condition failed: `s as &'static str != s` (\"\" vs \"\")",
+    );
+
+    let test = || Ok(ensure!(&s as &&'static str != &s));
+    assert_err(
+        test,
+        "Condition failed: `&s as &&'static str != &s` (\"\" vs \"\")",
+    );
+
+    let m: &mut str = Default::default();
+    let test = || Ok(ensure!(m as &mut str != s));
+    assert_err(
+        test,
+        "Condition failed: `m as &mut str != s` (\"\" vs \"\")",
+    );
+
+    let test = || Ok(ensure!(&m as &&mut str != &s));
+    assert_err(
+        test,
+        "Condition failed: `&m as &&mut str != &s` (\"\" vs \"\")",
+    );
+
+    let test = || Ok(ensure!(&m as &&'static mut str != &s));
+    assert_err(
+        test,
+        "Condition failed: `&m as &&'static mut str != &s` (\"\" vs \"\")",
+    );
+
+    let f = || {};
+    let test = || Ok(ensure!(f as fn() as usize * 0 != 0));
+    assert_err(
+        test,
+        "Condition failed: `f as fn() as usize * 0 != 0` (0 vs 0)",
+    );
+
+    let test = || Ok(ensure!(f as fn() -> () as usize * 0 != 0));
+    assert_err(
+        test,
+        "Condition failed: `f as fn() -> () as usize * 0 != 0` (0 vs 0)",
+    );
+
+    let test = || Ok(ensure!(f as for<'a> fn() as usize * 0 != 0));
+    assert_err(
+        test,
+        "Condition failed: `f as for<'a> fn() as usize * 0 != 0` (0 vs 0)",
+    );
+
+    let test = || Ok(ensure!(f as unsafe fn() as usize * 0 != 0));
+    assert_err(
+        test,
+        "Condition failed: `f as unsafe fn() as usize * 0 != 0` (0 vs 0)",
+    );
+
+    #[rustfmt::skip]
+    let test = || Ok(ensure!(f as extern "Rust" fn() as usize * 0 != 0));
+    assert_err(
+        test,
+        "Condition failed: `f as extern \"Rust\" fn() as usize * 0 != 0` (0 vs 0)",
+    );
+
+    extern "C" fn extern_fn() {}
+    #[rustfmt::skip]
+    #[allow(missing_abi)]
+    let test = || Ok(ensure!(extern_fn as extern fn() as usize * 0 != 0));
+    assert_err(
+        test,
+        "Condition failed: `extern_fn as extern fn() as usize * 0 != 0` (0 vs 0)",
+    );
+
+    let f = || -> ! { panic!() };
+    let test = || Ok(ensure!(f as fn() -> ! as usize * 0 != 0));
+    assert_err(
+        test,
+        "Condition failed: `f as fn() -> ! as usize * 0 != 0` (0 vs 0)",
+    );
+
+    trait EqDebug<T>: PartialEq<T> + Debug {
+        type Assoc;
+    }
+
+    impl<S, T> EqDebug<T> for S
+    where
+        S: PartialEq<T> + Debug,
+    {
+        type Assoc = bool;
+    }
+
+    let test = || Ok(ensure!(&0 as &dyn EqDebug<i32, Assoc = bool> != &0));
+    assert_err(
+        test,
+        "Condition failed: `&0 as &dyn EqDebug<i32, Assoc = bool> != &0` (0 vs 0)",
+    );
+
+    let test = || {
+        Ok(ensure!(
+            PhantomData as PhantomData<<i32 as ToOwned>::Owned> != PhantomData
+        ))
+    };
+    assert_err(
+        test,
+        "Condition failed: `PhantomData as PhantomData<<i32 as ToOwned>::Owned> != PhantomData` (PhantomData<i32> vs PhantomData<i32>)",
+    );
+
+    macro_rules! int {
+        (...) => {
+            u8
+        };
+    }
+
+    let test = || Ok(ensure!(0 as int!(...) != 0));
+    assert_err(test, "Condition failed: `0 as int!(...) != 0` (0 vs 0)");
+
+    let test = || Ok(ensure!(0 as int![...] != 0));
+    assert_err(test, "Condition failed: `0 as int![...] != 0` (0 vs 0)");
+
+    let test = || Ok(ensure!(0 as int! {...} != 0));
+    assert_err(test, "Condition failed: `0 as int! {...} != 0` (0 vs 0)");
+}
+
+#[test]
+fn test_pat() {
+    let test = || Ok(ensure!(if let ref mut _x @ 0 = 0 { 0 } else { 1 } == 1));
+    assert_err(
+        test,
+        "Condition failed: `if let ref mut _x @ 0 = 0 { 0 } else { 1 } == 1` (0 vs 1)",
+    );
+
+    let test = || Ok(ensure!(if let -1..=1 = 0 { 0 } else { 1 } == 1));
+    assert_err(
+        test,
+        "Condition failed: `if let -1..=1 = 0 { 0 } else { 1 } == 1` (0 vs 1)",
+    );
+
+    let test = || Ok(ensure!(if let &0 = &0 { 0 } else { 1 } == 1));
+    assert_err(
+        test,
+        "Condition failed: `if let &0 = &0 { 0 } else { 1 } == 1` (0 vs 1)",
+    );
+
+    let test = || Ok(ensure!(if let &&0 = &&0 { 0 } else { 1 } == 1));
+    assert_err(
+        test,
+        "Condition failed: `if let &&0 = &&0 { 0 } else { 1 } == 1` (0 vs 1)",
+    );
+
+    let test = || Ok(ensure!(if let &mut 0 = &mut 0 { 0 } else { 1 } == 1));
+    assert_err(
+        test,
+        "Condition failed: `if let &mut 0 = &mut 0 { 0 } else { 1 } == 1` (0 vs 1)",
+    );
+
+    let test = || Ok(ensure!(if let &&mut 0 = &&mut 0 { 0 } else { 1 } == 1));
+    assert_err(
+        test,
+        "Condition failed: `if let &&mut 0 = &&mut 0 { 0 } else { 1 } == 1` (0 vs 1)",
+    );
+
+    let test = || Ok(ensure!(if let (0, 1) = (0, 1) { 0 } else { 1 } == 1));
+    assert_err(
+        test,
+        "Condition failed: `if let (0, 1) = (0, 1) { 0 } else { 1 } == 1` (0 vs 1)",
+    );
+
+    let test = || Ok(ensure!(if let [0] = b"\0" { 0 } else { 1 } == 1));
+    assert_err(
+        test,
+        "Condition failed: `if let [0] = b\"\\0\" { 0 } else { 1 } == 1` (0 vs 1)",
+    );
+
+    let p = PhantomData::<u8>;
+    let test = || Ok(ensure!(if let P::<u8> {} = p { 0 } else { 1 } == 1));
+    assert_err(
+        test,
+        "Condition failed: `if let P::<u8> {} = p { 0 } else { 1 } == 1` (0 vs 1)",
+    );
+
+    let test = || Ok(ensure!(if let ::std::marker::PhantomData = p {} != ()));
+    assert_err(
+        test,
+        "Condition failed: `if let ::std::marker::PhantomData = p {} != ()` (() vs ())",
+    );
+
+    let test = || Ok(ensure!(if let <S as Trait>::V = 0 { 0 } else { 1 } == 1));
+    assert_err(
+        test,
+        "Condition failed: `if let <S as Trait>::V = 0 { 0 } else { 1 } == 1` (0 vs 1)",
+    );
+
+    let test = || Ok(ensure!(for _ in iter::once(()) {} != ()));
+    assert_err(
+        test,
+        "Condition failed: `for _ in iter::once(()) {} != ()` (() vs ())",
+    );
+
+    let test = || Ok(ensure!(if let stringify!(x) = "x" { 0 } else { 1 } == 1));
+    assert_err(
+        test,
+        "Condition failed: `if let stringify!(x) = \"x\" { 0 } else { 1 } == 1` (0 vs 1)",
+    );
+}
--- a/third_party/crates/anyhow-1.0.104/tests/test_ffi.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/test_ffi.rs
@@ -0,0 +1,19 @@
+#![deny(improper_ctypes, improper_ctypes_definitions)]
+#![allow(clippy::uninlined_format_args)]
+
+use anyhow::anyhow;
+
+#[no_mangle]
+pub extern "C" fn anyhow1(err: anyhow::Error) {
+    println!("{:?}", err);
+}
+
+#[no_mangle]
+pub extern "C" fn anyhow2(err: &mut Option<anyhow::Error>) {
+    *err = Some(anyhow!("ffi error"));
+}
+
+#[no_mangle]
+pub extern "C" fn anyhow3() -> Option<anyhow::Error> {
+    Some(anyhow!("ffi error"))
+}
--- a/third_party/crates/anyhow-1.0.104/tests/test_fmt.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/test_fmt.rs
@@ -0,0 +1,93 @@
+use anyhow::{bail, Context, Result};
+use std::io;
+
+fn f() -> Result<()> {
+    bail!(io::Error::new(io::ErrorKind::PermissionDenied, "oh no!"));
+}
+
+fn g() -> Result<()> {
+    f().context("f failed")
+}
+
+fn h() -> Result<()> {
+    g().context("g failed")
+}
+
+const EXPECTED_ALTDISPLAY_F: &str = "oh no!";
+
+const EXPECTED_ALTDISPLAY_G: &str = "f failed: oh no!";
+
+const EXPECTED_ALTDISPLAY_H: &str = "g failed: f failed: oh no!";
+
+const EXPECTED_DEBUG_F: &str = "oh no!";
+
+const EXPECTED_DEBUG_G: &str = "\
+f failed
+
+Caused by:
+    oh no!\
+";
+
+const EXPECTED_DEBUG_H: &str = "\
+g failed
+
+Caused by:
+    0: f failed
+    1: oh no!\
+";
+
+const EXPECTED_ALTDEBUG_F: &str = "\
+Custom {
+    kind: PermissionDenied,
+    error: \"oh no!\",
+}\
+";
+
+const EXPECTED_ALTDEBUG_G: &str = "\
+Error {
+    context: \"f failed\",
+    source: Custom {
+        kind: PermissionDenied,
+        error: \"oh no!\",
+    },
+}\
+";
+
+const EXPECTED_ALTDEBUG_H: &str = "\
+Error {
+    context: \"g failed\",
+    source: Error {
+        context: \"f failed\",
+        source: Custom {
+            kind: PermissionDenied,
+            error: \"oh no!\",
+        },
+    },
+}\
+";
+
+#[test]
+fn test_display() {
+    assert_eq!("g failed", h().unwrap_err().to_string());
+}
+
+#[test]
+fn test_altdisplay() {
+    assert_eq!(EXPECTED_ALTDISPLAY_F, format!("{:#}", f().unwrap_err()));
+    assert_eq!(EXPECTED_ALTDISPLAY_G, format!("{:#}", g().unwrap_err()));
+    assert_eq!(EXPECTED_ALTDISPLAY_H, format!("{:#}", h().unwrap_err()));
+}
+
+#[test]
+fn test_debug() {
+    assert_eq!(EXPECTED_DEBUG_F, format!("{:?}", f().unwrap_err()));
+    assert_eq!(EXPECTED_DEBUG_G, format!("{:?}", g().unwrap_err()));
+    assert_eq!(EXPECTED_DEBUG_H, format!("{:?}", h().unwrap_err()));
+}
+
+#[test]
+fn test_altdebug() {
+    assert_eq!(EXPECTED_ALTDEBUG_F, format!("{:#?}", f().unwrap_err()));
+    assert_eq!(EXPECTED_ALTDEBUG_G, format!("{:#?}", g().unwrap_err()));
+    assert_eq!(EXPECTED_ALTDEBUG_H, format!("{:#?}", h().unwrap_err()));
+}
--- a/third_party/crates/anyhow-1.0.104/tests/test_macros.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/test_macros.rs
@@ -0,0 +1,97 @@
+#![allow(
+    clippy::assertions_on_result_states,
+    clippy::eq_op,
+    clippy::incompatible_msrv, // https://github.com/rust-lang/rust-clippy/issues/12257
+    clippy::items_after_statements,
+    clippy::match_single_binding,
+    clippy::needless_pass_by_value,
+    clippy::shadow_unrelated,
+    clippy::uninlined_format_args,
+    clippy::wildcard_imports
+)]
+
+mod common;
+
+use self::common::*;
+use anyhow::{anyhow, ensure, Result};
+use std::cell::Cell;
+use std::future;
+
+#[test]
+fn test_messages() {
+    assert_eq!("oh no!", bail_literal().unwrap_err().to_string());
+    assert_eq!("oh no!", bail_fmt().unwrap_err().to_string());
+    assert_eq!("oh no!", bail_error().unwrap_err().to_string());
+}
+
+#[test]
+fn test_ensure() {
+    let f = || {
+        ensure!(1 + 1 == 2, "This is correct");
+        Ok(())
+    };
+    assert!(f().is_ok());
+
+    let v = 1;
+    let f = || {
+        ensure!(v + v == 2, "This is correct, v: {}", v);
+        Ok(())
+    };
+    assert!(f().is_ok());
+
+    let f = || {
+        ensure!(v + v == 1, "This is not correct, v: {}", v);
+        Ok(())
+    };
+    assert!(f().is_err());
+
+    let f = || {
+        ensure!(v + v == 1);
+        Ok(())
+    };
+    assert_eq!(
+        f().unwrap_err().to_string(),
+        "Condition failed: `v + v == 1` (2 vs 1)",
+    );
+}
+
+#[test]
+fn test_ensure_nonbool() -> Result<()> {
+    struct Struct {
+        condition: bool,
+    }
+
+    let s = Struct { condition: true };
+    match &s {
+        Struct { condition } => ensure!(condition), // &bool
+    }
+
+    Ok(())
+}
+
+#[test]
+fn test_temporaries() {
+    fn require_send_sync(_: impl Send + Sync) {}
+
+    require_send_sync(async {
+        // If anyhow hasn't dropped any temporary format_args it creates by the
+        // time it's done evaluating, those will stick around until the
+        // semicolon, which is on the other side of the await point, making the
+        // enclosing future non-Send.
+        future::ready(anyhow!("...")).await;
+    });
+
+    fn message(cell: Cell<&str>) -> &str {
+        cell.get()
+    }
+
+    require_send_sync(async {
+        future::ready(anyhow!(message(Cell::new("...")))).await;
+    });
+}
+
+#[test]
+fn test_brace_escape() {
+    let err = anyhow!("unterminated ${{..}} expression");
+    assert_eq!("unterminated ${..} expression", err.to_string());
+}
--- a/third_party/crates/anyhow-1.0.104/tests/test_repr.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/test_repr.rs
@@ -0,0 +1,30 @@
+#![allow(clippy::extra_unused_type_parameters)]
+
+mod drop;
+
+use self::drop::{DetectDrop, Flag};
+use anyhow::Error;
+use std::mem;
+
+#[test]
+fn test_error_size() {
+    assert_eq!(mem::size_of::<Error>(), mem::size_of::<usize>());
+}
+
+#[test]
+fn test_null_pointer_optimization() {
+    assert_eq!(mem::size_of::<Result<(), Error>>(), mem::size_of::<usize>());
+}
+
+#[test]
+fn test_autotraits() {
+    fn assert<E: Unpin + Send + Sync + 'static>() {}
+    assert::<Error>();
+}
+
+#[test]
+fn test_drop() {
+    let has_dropped = Flag::new();
+    drop(Error::new(DetectDrop::new(&has_dropped)));
+    assert!(has_dropped.get());
+}
--- a/third_party/crates/anyhow-1.0.104/tests/test_source.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/test_source.rs
@@ -0,0 +1,62 @@
+use anyhow::anyhow;
+use std::error::Error as StdError;
+use std::fmt::{self, Display};
+use std::io;
+
+#[derive(Debug)]
+enum TestError {
+    Io(io::Error),
+}
+
+impl Display for TestError {
+    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+        match self {
+            TestError::Io(e) => Display::fmt(e, formatter),
+        }
+    }
+}
+
+impl StdError for TestError {
+    fn source(&self) -> Option<&(dyn StdError + 'static)> {
+        match self {
+            TestError::Io(io) => Some(io),
+        }
+    }
+}
+
+#[test]
+fn test_literal_source() {
+    let error = anyhow!("oh no!");
+    assert!(error.source().is_none());
+}
+
+#[test]
+fn test_variable_source() {
+    let msg = "oh no!";
+    let error = anyhow!(msg);
+    assert!(error.source().is_none());
+
+    let msg = msg.to_owned();
+    let error = anyhow!(msg);
+    assert!(error.source().is_none());
+}
+
+#[test]
+fn test_fmt_source() {
+    let error = anyhow!("{} {}!", "oh", "no");
+    assert!(error.source().is_none());
+}
+
+#[test]
+fn test_io_source() {
+    let io = io::Error::new(io::ErrorKind::Other, "oh no!");
+    let error = anyhow!(TestError::Io(io));
+    assert_eq!("oh no!", error.source().unwrap().to_string());
+}
+
+#[test]
+fn test_anyhow_from_anyhow() {
+    let error = anyhow!("oh no!").context("context");
+    let error = anyhow!(error);
+    assert_eq!("oh no!", error.source().unwrap().to_string());
+}
--- a/third_party/crates/anyhow-1.0.104/tests/ui/chained-comparison.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/ui/chained-comparison.rs
@@ -0,0 +1,8 @@
+use anyhow::{ensure, Result};
+
+fn main() -> Result<()> {
+    // `ensure!` must not partition this into `(false) == (false == true)`
+    // because Rust doesn't ordinarily allow this form of expression.
+    ensure!(false == false == true);
+    Ok(())
+}
--- a/third_party/crates/anyhow-1.0.104/tests/ui/chained-comparison.stderr
+++ b/third_party/crates/anyhow-1.0.104/tests/ui/chained-comparison.stderr
@@ -0,0 +1,10 @@
+error: comparison operators cannot be chained
+ --> tests/ui/chained-comparison.rs:6:19
+  |
+6 |     ensure!(false == false == true);
+  |                   ^^       ^^
+  |
+help: split the comparison into two
+  |
+6 |     ensure!(false == false && false == true);
+  |                            ++++++++
--- a/third_party/crates/anyhow-1.0.104/tests/ui/empty-ensure.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/ui/empty-ensure.rs
@@ -0,0 +1,6 @@
+use anyhow::{ensure, Result};
+
+fn main() -> Result<()> {
+    ensure!();
+    Ok(())
+}
--- a/third_party/crates/anyhow-1.0.104/tests/ui/empty-ensure.stderr
+++ b/third_party/crates/anyhow-1.0.104/tests/ui/empty-ensure.stderr
@@ -0,0 +1,12 @@
+error: unexpected end of macro invocation
+ --> tests/ui/empty-ensure.rs:4:5
+  |
+4 |     ensure!();
+  |     ^^^^^^^^^ missing tokens in macro arguments
+  |
+note: while trying to match meta-variable `$cond:expr`
+ --> src/ensure.rs
+  |
+  |     ($cond:expr $(,)?) => {
+  |      ^^^^^^^^^^
+  = note: this error originates in the macro `$crate::__parse_ensure` which comes from the expansion of the macro `ensure` (in Nightly builds, run with -Z macro-backtrace for more info)
--- a/third_party/crates/anyhow-1.0.104/tests/ui/ensure-nonbool.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/ui/ensure-nonbool.rs
@@ -0,0 +1,40 @@
+use anyhow::{ensure, Result};
+use std::ops::{Deref, Not};
+
+struct Bool(bool);
+
+struct DerefBool(bool);
+
+struct NotBool(bool);
+
+impl Deref for DerefBool {
+    type Target = bool;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl Not for NotBool {
+    type Output = bool;
+    fn not(self) -> Self::Output {
+        !self.0
+    }
+}
+
+fn main() -> Result<()> {
+    ensure!("...");
+
+    let mut s = Bool(true);
+    match &mut s {
+        Bool(cond) => ensure!(cond),
+    }
+
+    let db = DerefBool(true);
+    ensure!(db);
+    ensure!(&db);
+
+    let nb = NotBool(true);
+    ensure!(nb);
+
+    Ok(())
+}
--- a/third_party/crates/anyhow-1.0.104/tests/ui/ensure-nonbool.stderr
+++ b/third_party/crates/anyhow-1.0.104/tests/ui/ensure-nonbool.stderr
@@ -0,0 +1,113 @@
+error[E0277]: the trait bound `&str: anyhow::__private::not::Bool` is not satisfied
+  --> tests/ui/ensure-nonbool.rs:25:13
+   |
+25 |     ensure!("...");
+   |     --------^^^^^-
+   |     |       |
+   |     |       the trait `anyhow::__private::not::Bool` is not implemented for `&str`
+   |     required by a bound introduced by this call
+   |
+help: the following other types implement trait `anyhow::__private::not::Bool`
+  --> src/lib.rs
+   |
+   |         impl Bool for bool {
+   |         ^^^^^^^^^^^^^^^^^^ `bool`
+...
+   |         impl Bool for &bool {
+   |         ^^^^^^^^^^^^^^^^^^^ `&bool`
+note: required by a bound in `anyhow::__private::not`
+  --> src/lib.rs
+   |
+   |     pub fn not(cond: impl Bool) -> bool {
+   |                           ^^^^ required by this bound in `not`
+
+error[E0277]: the trait bound `&mut bool: anyhow::__private::not::Bool` is not satisfied
+  --> tests/ui/ensure-nonbool.rs:29:31
+   |
+29 |         Bool(cond) => ensure!(cond),
+   |                       --------^^^^-
+   |                       |       |
+   |                       |       the trait `anyhow::__private::not::Bool` is not implemented for `&mut bool`
+   |                       required by a bound introduced by this call
+   |
+   = note: `anyhow::__private::not::Bool` is implemented for `&bool`, but not for `&mut bool`
+note: required by a bound in `anyhow::__private::not`
+  --> src/lib.rs
+   |
+   |     pub fn not(cond: impl Bool) -> bool {
+   |                           ^^^^ required by this bound in `not`
+help: consider dereferencing here
+   |
+29 |         Bool(cond) => ensure!(*cond),
+   |                               +
+
+error[E0277]: the trait bound `DerefBool: anyhow::__private::not::Bool` is not satisfied
+  --> tests/ui/ensure-nonbool.rs:33:13
+   |
+33 |     ensure!(db);
+   |     --------^^-
+   |     |       |
+   |     |       unsatisfied trait bound
+   |     required by a bound introduced by this call
+   |
+help: the trait `anyhow::__private::not::Bool` is not implemented for `DerefBool`
+  --> tests/ui/ensure-nonbool.rs:6:1
+   |
+ 6 | struct DerefBool(bool);
+   | ^^^^^^^^^^^^^^^^
+note: required by a bound in `anyhow::__private::not`
+  --> src/lib.rs
+   |
+   |     pub fn not(cond: impl Bool) -> bool {
+   |                           ^^^^ required by this bound in `not`
+help: consider dereferencing here
+   |
+33 |     ensure!(*db);
+   |             +
+
+error[E0277]: the trait bound `&DerefBool: anyhow::__private::not::Bool` is not satisfied
+  --> tests/ui/ensure-nonbool.rs:34:13
+   |
+34 |     ensure!(&db);
+   |     --------^^^-
+   |     |       |
+   |     |       the trait `anyhow::__private::not::Bool` is not implemented for `&DerefBool`
+   |     required by a bound introduced by this call
+   |
+note: required by a bound in `anyhow::__private::not`
+  --> src/lib.rs
+   |
+   |     pub fn not(cond: impl Bool) -> bool {
+   |                           ^^^^ required by this bound in `not`
+help: consider dereferencing here
+   |
+34 |     ensure!(&*db);
+   |              +
+
+error[E0277]: the trait bound `NotBool: anyhow::__private::not::Bool` is not satisfied
+  --> tests/ui/ensure-nonbool.rs:37:13
+   |
+37 |     ensure!(nb);
+   |     --------^^-
+   |     |       |
+   |     |       unsatisfied trait bound
+   |     required by a bound introduced by this call
+   |
+help: the trait `anyhow::__private::not::Bool` is not implemented for `NotBool`
+  --> tests/ui/ensure-nonbool.rs:8:1
+   |
+ 8 | struct NotBool(bool);
+   | ^^^^^^^^^^^^^^
+help: the following other types implement trait `anyhow::__private::not::Bool`
+  --> src/lib.rs
+   |
+   |         impl Bool for bool {
+   |         ^^^^^^^^^^^^^^^^^^ `bool`
+...
+   |         impl Bool for &bool {
+   |         ^^^^^^^^^^^^^^^^^^^ `&bool`
+note: required by a bound in `anyhow::__private::not`
+  --> src/lib.rs
+   |
+   |     pub fn not(cond: impl Bool) -> bool {
+   |                           ^^^^ required by this bound in `not`
--- a/third_party/crates/anyhow-1.0.104/tests/ui/must-use.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/ui/must-use.rs
@@ -0,0 +1,11 @@
+#![deny(unused_must_use)]
+
+use anyhow::anyhow;
+
+fn main() -> anyhow::Result<()> {
+    if true {
+        // meant to write bail!
+        anyhow!("it failed");
+    }
+    Ok(())
+}
--- a/third_party/crates/anyhow-1.0.104/tests/ui/must-use.stderr
+++ b/third_party/crates/anyhow-1.0.104/tests/ui/must-use.stderr
@@ -0,0 +1,15 @@
+error: unused return value of `anyhow::__private::must_use` that must be used
+ --> tests/ui/must-use.rs:8:9
+  |
+8 |         anyhow!("it failed");
+  |         ^^^^^^^^^^^^^^^^^^^^
+  |
+note: the lint level is defined here
+ --> tests/ui/must-use.rs:1:9
+  |
+1 | #![deny(unused_must_use)]
+  |         ^^^^^^^^^^^^^^^
+help: use `let _ = ...` to ignore the resulting value
+  |
+8 |         let _ = anyhow!("it failed");
+  |         +++++++
--- a/third_party/crates/anyhow-1.0.104/tests/ui/no-impl.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/ui/no-impl.rs
@@ -0,0 +1,8 @@
+use anyhow::anyhow;
+
+#[derive(Debug)]
+struct Error;
+
+fn main() {
+    let _ = anyhow!(Error);
+}
--- a/third_party/crates/anyhow-1.0.104/tests/ui/no-impl.stderr
+++ b/third_party/crates/anyhow-1.0.104/tests/ui/no-impl.stderr
@@ -0,0 +1,32 @@
+error[E0599]: the method `anyhow_kind` exists for reference `&Error`, but its trait bounds were not satisfied
+ --> tests/ui/no-impl.rs:7:13
+  |
+4 | struct Error;
+  | ------------ doesn't satisfy `Error: Into<anyhow::Error>`, `Error: anyhow::kind::TraitKind` or `Error: std::fmt::Display`
+...
+7 |     let _ = anyhow!(Error);
+  |             ^^^^^^^^^^^^^^ method cannot be called on `&Error` due to unsatisfied trait bounds
+  |
+  = note: the following trait bounds were not satisfied:
+          `Error: Into<anyhow::Error>`
+          which is required by `Error: anyhow::kind::TraitKind`
+          `Error: std::fmt::Display`
+          which is required by `&Error: anyhow::kind::AdhocKind`
+          `&Error: Into<anyhow::Error>`
+          which is required by `&Error: anyhow::kind::TraitKind`
+note: the traits `Into` and `std::fmt::Display` must be implemented
+ --> $RUST/core/src/fmt/mod.rs
+  |
+  | pub trait Display: PointeeSized {
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  |
+ ::: $RUST/core/src/convert/mod.rs
+  |
+  | pub const trait Into<T>: Sized {
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  = help: items from traits can only be used if the trait is implemented and in scope
+  = note: the following traits define an item `anyhow_kind`, perhaps you need to implement one of them:
+          candidate #1: `anyhow::kind::AdhocKind`
+          candidate #2: `anyhow::kind::BoxedKind`
+          candidate #3: `anyhow::kind::TraitKind`
+  = note: this error originates in the macro `anyhow` (in Nightly builds, run with -Z macro-backtrace for more info)
--- a/third_party/crates/anyhow-1.0.104/tests/ui/temporary-value.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/ui/temporary-value.rs
@@ -0,0 +1,5 @@
+use anyhow::anyhow;
+
+fn main() {
+    let _ = anyhow!(&String::new());
+}
--- a/third_party/crates/anyhow-1.0.104/tests/ui/temporary-value.stderr
+++ b/third_party/crates/anyhow-1.0.104/tests/ui/temporary-value.stderr
@@ -0,0 +1,15 @@
+error[E0716]: temporary value dropped while borrowed
+ --> tests/ui/temporary-value.rs:4:22
+  |
+4 |     let _ = anyhow!(&String::new());
+  |             ---------^^^^^^^^^^^^^-
+  |             |        |
+  |             |        creates a temporary value which is freed while still in use
+  |             temporary value is freed at the end of this statement
+  |             argument requires that borrow lasts for `'static`
+  |
+note: requirement that the value outlives `'static` introduced here
+ --> src/kind.rs
+  |
+  |         M: Display + Debug + Send + Sync + 'static,
+  |                                            ^^^^^^^
--- a/third_party/crates/anyhow-1.0.104/tests/ui/wrong-interpolation.rs
+++ b/third_party/crates/anyhow-1.0.104/tests/ui/wrong-interpolation.rs
@@ -0,0 +1,5 @@
+use anyhow::{bail, Result};
+
+fn main() -> Result<()> {
+    bail!("{} not found");
+}
--- a/third_party/crates/anyhow-1.0.104/tests/ui/wrong-interpolation.stderr
+++ b/third_party/crates/anyhow-1.0.104/tests/ui/wrong-interpolation.stderr
@@ -0,0 +1,5 @@
+error: 1 positional argument in format string, but no arguments were given
+ --> tests/ui/wrong-interpolation.rs:4:12
+  |
+4 |     bail!("{} not found");
+  |            ^^
--- a/third_party/crates/clap-4.6.6/.cargo_vcs_info.json
+++ b/third_party/crates/clap-4.6.6/.cargo_vcs_info.json
@@ -1,6 +0,0 @@
-{
-  "git": {
-    "sha1": "4a622b4340d5e1fffff60c0ecefdc6882f738159"
-  },
-  "path_in_vcs": ""
-}
--- a/third_party/crates/clap-4.6.7/.cargo-checksum.json
+++ b/third_party/crates/clap-4.6.7/.cargo-checksum.json
--- a/third_party/crates/clap-4.6.7/.cargo_vcs_info.json
+++ b/third_party/crates/clap-4.6.7/.cargo_vcs_info.json
@@ -0,0 +1,6 @@
+{
+  "git": {
+    "sha1": "13f2db5072d600c11d8d6298e4e9ba53ffc6c1ab"
+  },
+  "path_in_vcs": ""
+}
--- a/third_party/crates/clap-4.6.7/BUILD.bazel
+++ b/third_party/crates/clap-4.6.7/BUILD.bazel
@@ -47,7 +47,7 @@ rust_library(
    crate_root = "src/lib.rs",
    edition = "2024",
    proc_macro_deps = [
-        "//third_party/crates/clap_derive-4.6.4:clap_derive",
+        "//third_party/crates/clap_derive-4.6.7:clap_derive",
    ],
    rustc_env_files = [
        ":cargo_toml_env_vars",
@@ -119,8 +119,8 @@ rust_library(
        "@rules_rust//rust/platform:x86_64-unknown-uefi": [],
        "//conditions:default": ["@platforms//:incompatible"],
    }),
-    version = "4.6.6",
+    version = "4.6.7",
    deps = [
-        "//third_party/crates/clap_builder-4.6.6:clap_builder",
+        "//third_party/crates/clap_builder-4.6.7:clap_builder",
    ],
 )
--- a/third_party/crates/clap-4.6.7/Cargo.lock
+++ b/third_party/crates/clap-4.6.7/Cargo.lock
@@ -62,7 +62,7 @@ version = "1.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc"
 dependencies = [
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]

 [[package]]
@@ -86,7 +86,7 @@ checksum = "291e6a250ff86cd4a820112fb8898808a366d8f9f58ce16d1f538353ad55747d"
 dependencies = [
 "anstyle",
 "once_cell_polyfill",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]

 [[package]]
@@ -145,7 +145,7 @@ checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"

 [[package]]
 name = "clap"
-version = "4.6.6"
+version = "4.6.7"
 dependencies = [
 "automod",
 "clap-cargo",
@@ -171,9 +171,9 @@ dependencies = [

 [[package]]
 name = "clap_builder"
-version = "4.6.6"
+version = "4.6.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7b48fea5a88e9ae728a2dcbedbfc0e730f7d60da42e1cb049a83c9fb8b789889"
+checksum = "ec0797fb7aeb1406c84efac526901f7ec3ead2124f946b494e72879d4b54704d"
 dependencies = [
 "anstream",
 "anstyle",
@@ -187,9 +187,9 @@ dependencies = [

 [[package]]
 name = "clap_derive"
-version = "4.6.4"
+version = "4.6.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d012d2b9d65aca7f18f4d9878a045bc17899bba951561ba5ec3c2ba1eed9a061"
+checksum = "f9c751b79415d4e559e3d1fcf128e09e720eb673a06d26cf6f392d37d75b66e0"
 dependencies = [
 "anstyle",
 "heck",
@@ -737,10 +737,10 @@ dependencies = [
 ]

 [[package]]
-name = "target-triple"
-version = "1.0.0"
+name = "target-tuple"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "591ef38edfb78ca4771ee32cf494cb8771944bee237a9b91fc9c1424ac4b777b"
+checksum = "876fef147edbcbddc8ac5cbbba92c7b86519e314e86638596c09673b2ed01e7f"

 [[package]]
 name = "termcolor"
@@ -758,7 +758,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "230a1b821ccbd75b185820a1f1ff7b14d21da1e442e22c0863ea5f08771a8874"
 dependencies = [
 "rustix",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]

 [[package]]
@@ -837,15 +837,15 @@ checksum = "756daf9b1013ebe47a8776667b466417e2d4c5679d441c26230efd9ef78692db"

 [[package]]
 name = "trybuild"
-version = "1.0.118"
+version = "1.0.121"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "06649c6f63d86604ba0c8950d5a1829fc9a17afd70fc6629f481d75b6a624c78"
+checksum = "c0cabaa10be1917331a313866bd94526343e03c77bcf69144b62b072ad35d47c"
 dependencies = [
 "glob",
 "serde",
 "serde_derive",
 "serde_json",
- "target-triple",
+ "target-tuple",
 "termcolor",
 "toml",
 ]
@@ -912,7 +912,7 @@ version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2a7b1c03c876122aa43f3020e6c3c3ee5c05081c9a00739faf7503aeba10d22"
 dependencies = [
- "windows-sys 0.52.0",
+ "windows-sys 0.48.0",
 ]

 [[package]]
@@ -921,6 +921,15 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"

+[[package]]
+name = "windows-sys"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
+dependencies = [
+ "windows-targets 0.48.5",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.52.0"
@@ -948,6 +957,21 @@ dependencies = [
 "windows-link",
 ]

+[[package]]
+name = "windows-targets"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a2fa6e2155d7247be68c096456083145c183cbbbc2764150dda45a87197940c"
+dependencies = [
+ "windows_aarch64_gnullvm 0.48.5",
+ "windows_aarch64_msvc 0.48.5",
+ "windows_i686_gnu 0.48.5",
+ "windows_i686_msvc 0.48.5",
+ "windows_x86_64_gnu 0.48.5",
+ "windows_x86_64_gnullvm 0.48.5",
+ "windows_x86_64_msvc 0.48.5",
+]
+
 [[package]]
 name = "windows-targets"
 version = "0.52.6"
@@ -981,6 +1005,12 @@ dependencies = [
 "windows_x86_64_msvc 0.53.1",
 ]

+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b38e32f0abccf9987a4e3079dfb67dcd799fb61361e53e2882c3cbaf0d905d8"
+
 [[package]]
 name = "windows_aarch64_gnullvm"
 version = "0.52.6"
@@ -993,6 +1023,12 @@ version = "0.53.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a9d8416fa8b42f5c947f8482c43e7d89e73a173cead56d044f6a56104a6d1b53"

+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc35310971f3b2dbbf3f0690a219f40e2d9afcf64f9ab7cc1be722937c26b4bc"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.52.6"
@@ -1005,6 +1041,12 @@ version = "0.53.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b9d782e804c2f632e395708e99a94275910eb9100b2114651e04744e9b125006"

+[[package]]
+name = "windows_i686_gnu"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a75915e7def60c94dcef72200b9a8e58e5091744960da64ec734a6c6e9b3743e"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.52.6"
@@ -1029,6 +1071,12 @@ version = "0.53.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fa7359d10048f68ab8b09fa71c3daccfb0e9b559aed648a8f95469c27057180c"

+[[package]]
+name = "windows_i686_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f55c233f70c4b27f66c523580f78f1004e8b5a8b659e05a4eb49d4166cca406"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.52.6"
@@ -1041,6 +1089,12 @@ version = "0.53.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1e7ac75179f18232fe9c285163565a57ef8d3c89254a30685b57d83a38d326c2"

+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53d40abd2583d23e4718fddf1ebec84dbff8381c07cae67ff7768bbf19c6718e"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.52.6"
@@ -1053,6 +1107,12 @@ version = "0.53.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c3842cdd74a865a8066ab39c8a7a473c0778a3f29370b5fd6b4b9aa7df4a499"

+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
+
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.52.6"
@@ -1065,6 +1125,12 @@ version = "0.53.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0ffa179e2d07eee8ad8f57493436566c7cc30ac536a3379fdf008f47f6bb7ae1"

+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.52.6"
--- a/third_party/crates/clap-4.6.7/Cargo.toml
+++ b/third_party/crates/clap-4.6.7/Cargo.toml
@@ -13,15 +13,16 @@
 edition = "2024"
 rust-version = "1.85"
 name = "clap"
-version = "4.6.6"
+version = "4.6.7"
 build = false
 include = [
-    "build.rs",
-    "src/**/*",
-    "Cargo.toml",
-    "LICENSE*",
-    "README.md",
-    "examples/**/*",
+    "/build.rs",
+    "/src/**/*",
+    "/Cargo.toml",
+    "/Cargo.lock",
+    "/LICENSE*",
+    "/README.md",
+    "/examples/**/*",
 ]
 autolib = false
 autobins = false
@@ -85,7 +86,7 @@ file = "CHANGELOG.md"
 search = "<!-- next-url -->"
 replace = """
 <!-- next-url -->
-[Unreleased]: https://github.com/clap-rs/clap/compare/{{tag_name}}...HEAD"""
+[Unreleased]: {{repository}}/compare/{{tag_name}}...HEAD"""
 exactly = 1

 [[package.metadata.release.pre-release-replacements]]
@@ -447,6 +448,7 @@ required-features = ["cargo"]
 [[example]]
 name = "git"
 path = "examples/git.rs"
+doc-scrape-examples = true

 [[example]]
 name = "git-derive"
@@ -508,11 +510,11 @@ doc-scrape-examples = true
 required-features = ["derive"]

 [dependencies.clap_builder]
-version = "=4.6.6"
+version = "=4.6.7"
 default-features = false

 [dependencies.clap_derive]
-version = "=4.6.4"
+version = "=4.6.7"
 optional = true

 [dev-dependencies.automod]
@@ -555,8 +557,11 @@ assigning_clones = "allow"
 blocks_in_conditions = "allow"
 bool_assert_comparison = "allow"
 branches_sharing_code = "allow"
+byte_char_slices = "allow"
 checked_conversions = "warn"
 collapsible_else_if = "allow"
+collapsible_match = "allow"
+collection_is_never_read = "warn"
 create_dir = "warn"
 dbg_macro = "warn"
 debug_assert_with_mut_call = "warn"
@@ -569,9 +574,10 @@ explicit_into_iter_loop = "warn"
 fallible_impl_from = "warn"
 filter_map_next = "warn"
 flat_map_option = "warn"
+float_cmp = "warn"
 float_cmp_const = "warn"
 fn_params_excessive_bools = "warn"
-from_iter_instead_of_collect = "warn"
+fn_to_numeric_cast_any = "warn"
 if_same_then_else = "allow"
 implicit_clone = "warn"
 imprecise_flops = "warn"
@@ -587,11 +593,13 @@ linkedlist = "warn"
 lossy_float_literal = "warn"
 macro_use_imports = "warn"
 mem_forget = "warn"
+mismatching_type_param_order = "warn"
 multiple_bound_locations = "allow"
 mutex_integer = "warn"
 needless_continue = "allow"
 needless_for_each = "warn"
 negative_feature_names = "warn"
+partial_pub_fields = "warn"
 path_buf_push_overwrite = "warn"
 ptr_as_ptr = "warn"
 rc_mutex = "warn"
@@ -609,11 +617,16 @@ string_lit_as_bytes = "warn"
 todo = "warn"
 trait_duplication_in_bounds = "warn"
 uninlined_format_args = "warn"
+unnecessary_safety_comment = "warn"
+unnecessary_safety_doc = "warn"
+unseparated_literal_suffix = "warn"
+use_self = "warn"
 verbose_file_reads = "warn"
 zero_sized_map_values = "warn"

 [lints.rust]
-unnameable_types = "allow"
+non_ascii_idents = "warn"
+trivial_numeric_casts = "warn"
 unreachable_pub = "warn"
 unsafe_op_in_unsafe_fn = "warn"
 unused_lifetimes = "warn"
@@ -624,17 +637,11 @@ unused_qualifications = "warn"
 level = "warn"
 priority = -1

-[profile.bench]
-lto = true
-codegen-units = 1
-
 [profile.dev]
 panic = "abort"

 [profile.release]
 lto = true
 codegen-units = 1
+debug = "line-tables-only"
 panic = "abort"
-
-[profile.test]
-opt-level = 1
--- a/third_party/crates/clap-4.6.7/Cargo.toml.orig
+++ b/third_party/crates/clap-4.6.7/Cargo.toml.orig
@@ -16,17 +16,21 @@ license = "MIT OR Apache-2.0"
 edition = "2024"
 rust-version = "1.85"  # MSRV
 include = [
-  "build.rs",
-  "src/**/*",
-  "Cargo.toml",
-  "LICENSE*",
-  "README.md",
-  "examples/**/*"
+  "/build.rs",
+  "/src/**/*",
+  "/Cargo.toml",
+  "/Cargo.lock",
+  "/LICENSE*",
+  "/README.md",
+  "/examples/**/*"
 ]

 [workspace.lints.rust]
 rust_2018_idioms = { level = "warn", priority = -1 }
-unnameable_types = "allow"
+
+non_ascii_idents = "warn"
+trivial_numeric_casts = "warn"
+#unnameable_types = "warn"
 unreachable_pub = "warn"
 unsafe_op_in_unsafe_fn = "warn"
 unused_lifetimes = "warn"
@@ -34,10 +38,17 @@ unused_macro_rules = "warn"
 unused_qualifications = "warn"

 [workspace.lints.clippy]
+#allow_attributes_without_reason = "warn"
 bool_assert_comparison = "allow"
 branches_sharing_code = "allow"
+byte_char_slices = "allow"  # sometimes explicit arrays are better
+#cast_possible_truncation = "warn"
+#cast_possible_wrap = "warn"
+#cast_sign_loss = "warn"
 checked_conversions = "warn"
 collapsible_else_if = "allow"
+collapsible_match = "allow"
+collection_is_never_read = "warn"
 create_dir = "warn"
 dbg_macro = "warn"
 debug_assert_with_mut_call = "warn"
@@ -50,9 +61,10 @@ explicit_into_iter_loop = "warn"
 fallible_impl_from = "warn"
 filter_map_next = "warn"
 flat_map_option = "warn"
+float_cmp = "warn"
 float_cmp_const = "warn"
 fn_params_excessive_bools = "warn"
-from_iter_instead_of_collect = "warn"
+fn_to_numeric_cast_any = "warn"
 if_same_then_else = "allow"
 implicit_clone = "warn"
 imprecise_flops = "warn"
@@ -68,10 +80,12 @@ linkedlist = "warn"
 lossy_float_literal = "warn"
 macro_use_imports = "warn"
 mem_forget = "warn"
+mismatching_type_param_order = "warn"
 mutex_integer = "warn"
 needless_continue = "allow"
 needless_for_each = "warn"
 negative_feature_names = "warn"
+partial_pub_fields = "warn"
 path_buf_push_overwrite = "warn"
 ptr_as_ptr = "warn"
 rc_mutex = "warn"
@@ -82,13 +96,19 @@ result_large_err = "allow"
 same_functions_in_if_condition = "warn"
 self_named_module_files = "warn"
 semicolon_if_nothing_returned = "warn"
+#should_panic_without_expect = "warn"
 str_to_string = "warn"
 string_add = "warn"
 string_add_assign = "warn"
 string_lit_as_bytes = "warn"
 todo = "warn"
 trait_duplication_in_bounds = "warn"
+#undocumented_unsafe_blocks = "warn"
 uninlined_format_args = "warn"
+unnecessary_safety_comment = "warn"
+unnecessary_safety_doc = "warn"
+unseparated_literal_suffix = "warn"
+use_self = "warn"
 verbose_file_reads = "warn"
 # wildcard_imports = "warn"
 zero_sized_map_values = "warn"
@@ -104,11 +124,11 @@ panic = "abort"
 panic = "abort"
 codegen-units = 1
 lto = true
-# debug = "line-tables-only"  # requires Cargo 1.71
+debug = "line-tables-only"

 [package]
 name = "clap"
-version = "4.6.6"
+version = "4.6.7"
 description = "A simple to use, efficient, and full-featured Command Line Argument Parser"
 categories = ["command-line-interface"]
 keywords = [
@@ -139,7 +159,7 @@ pre-release-replacements = [
  {file="CHANGELOG.md", search="\\.\\.\\.HEAD", replace="...{{tag_name}}", exactly=1},
  {file="CHANGELOG.md", search="ReleaseDate", replace="{{date}}", min=1},
  {file="CHANGELOG.md", search="<!-- next-header -->", replace="<!-- next-header -->\n## [Unreleased] - ReleaseDate\n", exactly=1},
-  {file="CHANGELOG.md", search="<!-- next-url -->", replace="<!-- next-url -->\n[Unreleased]: https://github.com/clap-rs/clap/compare/{{tag_name}}...HEAD", exactly=1},
+  {file="CHANGELOG.md", search="<!-- next-url -->", replace="<!-- next-url -->\n[Unreleased]: {{repository}}/compare/{{tag_name}}...HEAD", exactly=1},
  {file="CITATION.cff", search="^date-released: ....-..-..", replace="date-released: {{date}}"},
  {file="CITATION.cff", search="^version: .+\\..+\\..+", replace="version: {{version}}"},
  {file="src/lib.rs", search="blob/v.+\\..+\\..+/CHANGELOG.md", replace="blob/v{{version}}/CHANGELOG.md", exactly=1},
@@ -185,8 +205,8 @@ unstable-markdown = ["clap_derive/unstable-markdown"]
 bench = false

 [dependencies]
-clap_builder = { path = "./clap_builder", version = "=4.6.6", default-features = false }
-clap_derive = { path = "./clap_derive", version = "=4.6.4", optional = true }
+clap_builder = { path = "./clap_builder", version = "=4.6.7", default-features = false }
+clap_derive = { path = "./clap_derive", version = "=4.6.7", optional = true }

 [dev-dependencies]
 trybuild = "1.0.116"
@@ -230,6 +250,10 @@ name = "find"
 required-features = ["cargo"]
 doc-scrape-examples = true

+[[example]]
+name = "git"
+doc-scrape-examples = true
+
 [[example]]
 name = "git-derive"
 required-features = ["derive"]
@@ -532,12 +556,5 @@ path = "examples/derive_ref/flatten_hand_args.rs"
 required-features = ["derive"]
 doc-scrape-examples = true

-[profile.test]
-opt-level = 1
-
-[profile.bench]
-lto = true
-codegen-units = 1
-
 [lints]
 workspace = true
--- a/third_party/crates/clap_derive-4.6.4/LICENSE-APACHE
+++ b/third_party/crates/clap_derive-4.6.4/LICENSE-APACHE
@@ -186,7 +186,7 @@
      same "printed page" as the copyright notice for easier
      identification within third-party archives.

-   Copyright {yyyy} {name of copyright owner}
+   Copyright Individual contributors

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
--- a/third_party/crates/clap-4.6.7/LICENSE-MIT
+++ b/third_party/crates/clap-4.6.7/LICENSE-MIT
--- a/third_party/crates/clap-4.6.7/README.md
+++ b/third_party/crates/clap-4.6.7/README.md
--- a/third_party/crates/clap-4.6.7/examples/README.md
+++ b/third_party/crates/clap-4.6.7/examples/README.md
--- a/third_party/crates/clap-4.6.7/examples/cargo-example-derive.md
+++ b/third_party/crates/clap-4.6.7/examples/cargo-example-derive.md
--- a/third_party/crates/clap-4.6.7/examples/cargo-example-derive.rs
+++ b/third_party/crates/clap-4.6.7/examples/cargo-example-derive.rs
--- a/third_party/crates/clap-4.6.7/examples/cargo-example.md
+++ b/third_party/crates/clap-4.6.7/examples/cargo-example.md
--- a/third_party/crates/clap-4.6.7/examples/cargo-example.rs
+++ b/third_party/crates/clap-4.6.7/examples/cargo-example.rs
--- a/third_party/crates/clap-4.6.7/examples/demo.md
+++ b/third_party/crates/clap-4.6.7/examples/demo.md
--- a/third_party/crates/clap-4.6.7/examples/demo.rs
+++ b/third_party/crates/clap-4.6.7/examples/demo.rs
--- a/third_party/crates/clap-4.6.7/examples/derive_ref/augment_args.rs
+++ b/third_party/crates/clap-4.6.7/examples/derive_ref/augment_args.rs
--- a/third_party/crates/clap-4.6.7/examples/derive_ref/augment_subcommands.rs
+++ b/third_party/crates/clap-4.6.7/examples/derive_ref/augment_subcommands.rs
--- a/third_party/crates/clap-4.6.7/examples/derive_ref/flatten_hand_args.rs
+++ b/third_party/crates/clap-4.6.7/examples/derive_ref/flatten_hand_args.rs
--- a/third_party/crates/clap-4.6.7/examples/derive_ref/hand_subcommand.rs
+++ b/third_party/crates/clap-4.6.7/examples/derive_ref/hand_subcommand.rs
--- a/third_party/crates/clap-4.6.7/examples/derive_ref/interop_tests.md
+++ b/third_party/crates/clap-4.6.7/examples/derive_ref/interop_tests.md
--- a/third_party/crates/clap-4.6.7/examples/escaped-positional-derive.md
+++ b/third_party/crates/clap-4.6.7/examples/escaped-positional-derive.md
--- a/third_party/crates/clap-4.6.7/examples/escaped-positional-derive.rs
+++ b/third_party/crates/clap-4.6.7/examples/escaped-positional-derive.rs
--- a/third_party/crates/clap-4.6.7/examples/escaped-positional.md
+++ b/third_party/crates/clap-4.6.7/examples/escaped-positional.md
--- a/third_party/crates/clap-4.6.7/examples/escaped-positional.rs
+++ b/third_party/crates/clap-4.6.7/examples/escaped-positional.rs
--- a/third_party/crates/clap-4.6.7/examples/find.md
+++ b/third_party/crates/clap-4.6.7/examples/find.md
--- a/third_party/crates/clap-4.6.7/examples/find.rs
+++ b/third_party/crates/clap-4.6.7/examples/find.rs
@@ -83,7 +83,7 @@ impl Value {
        values.into_values().collect::<Vec<_>>()
    }

-    fn extract<T: Clone + Into<Value> + Send + Sync + 'static>(
+    fn extract<T: Clone + Into<Self> + Send + Sync + 'static>(
        matches: &ArgMatches,
        id: &clap::Id,
        output: &mut BTreeMap<usize, (clap::Id, Self)>,
--- a/third_party/crates/clap-4.6.7/examples/git-derive.md
+++ b/third_party/crates/clap-4.6.7/examples/git-derive.md
--- a/third_party/crates/clap-4.6.7/examples/git-derive.rs
+++ b/third_party/crates/clap-4.6.7/examples/git-derive.rs
--- a/third_party/crates/clap-4.6.7/examples/git.md
+++ b/third_party/crates/clap-4.6.7/examples/git.md
--- a/third_party/crates/clap-4.6.7/examples/git.rs
+++ b/third_party/crates/clap-4.6.7/examples/git.rs
--- a/third_party/crates/clap-4.6.7/examples/multicall-busybox.md
+++ b/third_party/crates/clap-4.6.7/examples/multicall-busybox.md
--- a/third_party/crates/clap-4.6.7/examples/multicall-busybox.rs
+++ b/third_party/crates/clap-4.6.7/examples/multicall-busybox.rs
--- a/third_party/crates/clap-4.6.7/examples/multicall-hostname.md
+++ b/third_party/crates/clap-4.6.7/examples/multicall-hostname.md
--- a/third_party/crates/clap-4.6.7/examples/multicall-hostname.rs
+++ b/third_party/crates/clap-4.6.7/examples/multicall-hostname.rs
--- a/third_party/crates/clap-4.6.7/examples/pacman.md
+++ b/third_party/crates/clap-4.6.7/examples/pacman.md
--- a/third_party/crates/clap-4.6.7/examples/pacman.rs
+++ b/third_party/crates/clap-4.6.7/examples/pacman.rs
--- a/third_party/crates/clap-4.6.7/examples/repl-derive.rs
+++ b/third_party/crates/clap-4.6.7/examples/repl-derive.rs
--- a/third_party/crates/clap-4.6.7/examples/repl.rs
+++ b/third_party/crates/clap-4.6.7/examples/repl.rs
--- a/third_party/crates/clap-4.6.7/examples/snapshots/pacman.txt
+++ b/third_party/crates/clap-4.6.7/examples/snapshots/pacman.txt
--- a/Show More
+++ b/Show More
				`@@ -0,0 +1 @@`
				{"$comment":"This file only protects against accidental modifications. It is not a security mechanism and does not protect against malicious changes.","files":{".cargo_vcs_info.json":"9f5691d9965b8418415cfe8872a667089542a23a1d746bad08476ccda5e6269c",".github/FUNDING.yml":"b017158736b3c9751a2d21edfce7fe61c8954e2fced8da8dd3013c2f3e295bd9",".github/workflows/ci.yml":"40e9434834e8ba84207ef6a401da6b154fa4220a4847230284d6aae63d8a39ac","Cargo.lock":"c7b6dd9adcad0b26ce812afdb8539e1d93994a0735a90eb0dd7ce8535e3e7ffa","Cargo.toml":"249789761ff37004dda628765f0c9e60a61fa43cbbd2d364789dca0c789eeb59","Cargo.toml.orig":"1b03bd9d21f63835f0449cf1456e6143a15efd6b7803bc5b7787643db62b6f53","LICENSE-APACHE":"62c7a1e35f56406896d7aa7ca52d0cc0d272ac022b5d2796e7d6905db8a3636a","LICENSE-MIT":"23f18e03dc49df91622fe2a76176497404e46ced8a715d9d2b67a7446571cca3","README.md":"86f5b88c45b2b9b7eefa0ad66c11918a607319cad683f01123ff38db68b4a49b","build.rs":"89d1baedcff59822ed692d3a33f131c211a213bdec33c83f68b54110d9c64223","rust-toolchain.toml":"6bbb61302978c736b2da03e4fb40e3beab908f85d533ab46fd541e637b5f3e0f","src/backtrace.rs":"621ec5d9e2f31883d0384ae00fc536d1ea359da989d2e0d1be1ba03482c8f920","src/chain.rs":"85af447405f075633fab186b7f1c94d7f33a36474f239c50a961b2d6197d5426","src/context.rs":"8b106e43df7a66fbc3e85b87a4d7f8a780d43d3ee0cd1ae86c571950ecf07d13","src/ensure.rs":"709524741c8f9365e01cb36fc2349a8724513de02cf9e253809a93af8d6a7b6e","src/error.rs":"2a78ee4e5f8d6b4476c761f77473362b9ed12f5402e4701001e7d04d628ba030","src/fmt.rs":"2cca8c7f3cab636fdb17433ca2b1fda0e8d28bb20d4647b87c991dacd8f06cdf","src/kind.rs":"ddcabf15b3b47a4ef16ed361c45cc0cc82e7be90622995ff6c04b3fec78bb04f","src/lib.rs":"ea7f436f6bf4b356ff30ec922b50b40ead0ade28b123341a8de7f310311fd44c","src/macros.rs":"696e6a8aac614525a29697aedc7561e98beccf3d43aed3ada1cc93daa99da8ba","src/nightly.rs":"1c0aeadfcdbe22f8f807b185dec1a7448c378bddb37689714944b60473b58049","src/ptr.rs":"a114639d26f4feca7e186106342334cdf2e2176f892149aa331ace72e5d81410","src/wrapper.rs":"079218e1d8c9374f52311b1c7971f7fbdeba4d7af1b0749c0d535010f1232697","tests/common/mod.rs":"f9088c2d7afafa64ff730b629272045b776bfafc2f5957508242da630635f2e1","tests/compiletest.rs":"4e381aa8ca3eabb7ac14d1e0c3700b3223e47640547a6988cfa13ad68255f60f","tests/drop/mod.rs":"08c3e553c1cc0d2dbd936fc45f4b5b1105057186affd6865e8d261e05f0f0646","tests/test_autotrait.rs":"ba9bc18416115cb48fd08675a3e7fc89584de7926dad6b2be6645dc13d5931df","tests/test_backtrace.rs":"60afdd7ee5850dc22625ff486fe41c47fd322db874a93c4871ddfed2bf603930","tests/test_boxed.rs":"6b26db0e2eb72afe9af7352ea820837aab90f8d486294616dd5dc34c1b94038c","tests/test_chain.rs":"3a8a8d7569913bd98c0e27c69d0bda35101e7fde7c056ed57cdd8ed018e4cbcb","tests/test_context.rs":"a4cb7d9a6d488d902eb5ac516d2b5e4135f46caaa2d151580ed9ba83c2a90b57","tests/test_convert.rs":"7e7a8b4772a427a911014ac4d1083f9519000e786177f898808980dd9bdfde61","tests/test_downcast.rs":"797e69a72d125758c4c4897e5dc776d549d52cc9a6a633e0a33193f588a62b88","tests/test_ensure.rs":"6ef8823153d6aba31dda8438b9e51984e6b7377d585addbaf87162b39d733cd9","tests/test_ffi.rs":"c6e6bf39e6b2cf9aacea12e3e4da4e1e1edb7fc906d231e5baf45812a08de3c4","tests/test_fmt.rs":"0e49b48f08e4faaf03e2f202e1efc5250018876c4e1b01b8379d7a38ae8df870","tests/test_macros.rs":"3eb6ec9024cf8812da48de35b733d5a69ed942907fb4e6c67ec471cd4bcef562","tests/test_repr.rs":"034dee888abd08741e11ac2e95ef4fcb2ab3943d0a76e8e976db404658e1a252","tests/test_source.rs":"b80723cf635a4f8c4df21891b34bfab9ed2b2aa407e7a2f826d24e334cd5f88e","tests/ui/chained-comparison.rs":"6504b03d95b5acc232a7f4defc9f343b2be6733bf475fa0992e8e6545b912bd4","tests/ui/chained-comparison.stderr":"7f1d0a8c251b0ede2d30b3087ec157fc660945c97a642c4a5acf5a14ec58de34","tests/ui/empty-ensure.rs":"ab5bf37c846a0d689f26ce9257a27228411ed64154f9c950f1602d88a355d94b","tests/ui/empty-ensure.stderr":"315782f5f4246290fe190e3767b22c3dcaffaabc19c5ace0373537d53e765278","tests/ui/ensure-nonbool.rs":"7e57cb93fbcd82959b36586ed6bd2ad978b051fe5facd5274651fde6b1600905","tests/ui/ensure-nonbool.stderr":"e3dfbaedd66fdfc524f8462305760c7978c4268ca7e1cd872d7ecde5d3b455bd","tests/ui/must-use.rs":"fb59860b43f673bf4a430a6036ba463e95028844d8dd4243cfe5ebc7f2be582f","tests/ui/must-use.stderr":"8b1cb7fca632396a22bb3a642f2df3ab62b3e9a87951e20fa40bdd548d002162","tests/ui/no-impl.rs":"fab6cbf2f6ea510b86f567dfb3b7c31250a9fd71ae5d110dbb9188be569ec593","tests/ui/no-impl.stderr":"c472de95483aa234728c7f57039c88fc3456892838329976a75cd167c3c172c9","tests/ui/temporary-value.rs":"4dcc96271b2403e6372cf4cfc813445e5ce4365fc6e156b6bc38274098499a70","tests/ui/temporary-value.stderr":"7f99cd914d2d423d77274e1b859b5ad151cde8224e42687e50622c26118fd47f","tests/ui/wrong-interpolation.rs":"9c44d4674c2dccd27b9dedd03341346ec02d993b41793ee89b5755202e7e367e","tests/ui/wrong-interpolation.stderr":"301e60e2eb9401782c7dc0b3580613a4cb2aafd4cc8065734a630a62e1161aa5"},"package":"330a5ed07fa54e4702c9d6c4174f74427fc0ef6e214bbd677ae50a5099946470"}