[INFO] fetching crate ampc 0.5.0-alpha...
[INFO] documenting ampc-0.5.0-alpha against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate ampc 0.5.0-alpha into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate ampc 0.5.0-alpha on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ampc 0.5.0-alpha
[INFO] finished tweaking crates.io crate ampc 0.5.0-alpha
[INFO] tweaked toml for crates.io crate ampc 0.5.0-alpha written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate ampc 0.5.0-alpha already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded log v0.4.18
[INFO] [stderr]   Downloaded colorchoice v1.0.0
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[INFO] [stderr]   Downloaded windows_i686_gnu v0.48.0
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[INFO] [stderr]   Downloaded cranelift-isle v0.94.1
[INFO] [stderr]   Downloaded windows_x86_64_gnullvm v0.48.0
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[INFO] [stderr]   Downloaded clap_derive v4.3.2
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[INFO] [stderr]   Downloaded io-lifetimes v1.0.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f6d5a3ce27b263cd9feb8eeb97ab7b46cccad4c13d7d2ca2982392b400d89b42
[INFO] running `Command { std: "docker" "start" "-a" "f6d5a3ce27b263cd9feb8eeb97ab7b46cccad4c13d7d2ca2982392b400d89b42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6d5a3ce27b263cd9feb8eeb97ab7b46cccad4c13d7d2ca2982392b400d89b42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6d5a3ce27b263cd9feb8eeb97ab7b46cccad4c13d7d2ca2982392b400d89b42", kill_on_drop: false }`
[INFO] [stdout] f6d5a3ce27b263cd9feb8eeb97ab7b46cccad4c13d7d2ca2982392b400d89b42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 152451327db3357d5d4f1a6ec7f6e37b3954707fe44982ce92bfa11ae37fc4ef
[INFO] running `Command { std: "docker" "start" "-a" "152451327db3357d5d4f1a6ec7f6e37b3954707fe44982ce92bfa11ae37fc4ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking once_cell v1.17.2
[INFO] [stderr]    Compiling cranelift-isle v0.94.1
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.94.1
[INFO] [stderr]    Compiling log v0.4.18
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling target-lexicon v0.12.7
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]     Checking slice-group-by v0.3.1
[INFO] [stderr]     Checking cranelift-entity v0.94.1
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.94.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.59
[INFO] [stderr]    Compiling rustix v0.37.19
[INFO] [stderr]     Checking bumpalo v3.13.0
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking cranelift-bforest v0.94.1
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]     Checking linux-raw-sys v0.3.8
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling ahash v0.8.3
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking regalloc2 v0.6.1
[INFO] [stderr]    Compiling anyhow v1.0.71
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]     Checking anstyle v1.0.0
[INFO] [stderr]     Checking anstyle-parse v0.2.0
[INFO] [stderr]     Checking colorchoice v1.0.0
[INFO] [stderr]     Checking anstyle-query v1.0.0
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking clap_lex v0.5.0
[INFO] [stderr]     Checking unicode-xid v0.2.4
[INFO] [stderr]     Checking hashbrown v0.13.2
[INFO] [stderr]     Checking slot-arena v0.1.0
[INFO] [stderr]     Checking termcolor v1.2.0
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking gimli v0.27.2
[INFO] [stderr]    Compiling syn v2.0.18
[INFO] [stderr]     Checking object v0.30.3
[INFO] [stderr]    Compiling cranelift-codegen v0.94.1
[INFO] [stderr]     Checking is-terminal v0.4.7
[INFO] [stderr]     Checking anstream v0.3.2
[INFO] [stderr]     Checking clap_builder v4.3.1
[INFO] [stderr]    Compiling clap_derive v4.3.2
[INFO] [stderr]     Checking clap v4.3.2
[INFO] [stderr]     Checking cranelift-module v0.94.1
[INFO] [stderr]     Checking cranelift-frontend v0.94.1
[INFO] [stderr]     Checking cranelift-native v0.94.1
[INFO] [stderr]     Checking cranelift-object v0.94.1
[INFO] [stderr]     Checking cranelift v0.94.1
[INFO] [stderr]  Documenting ampc v0.5.0-alpha (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(box_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `ampc`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type lib --crate-name ampc src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=48b19f46e18f6ec7 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-18ec6081fcaa6f08.rmeta --extern cranelift=/opt/rustwide/target/debug/deps/libcranelift-76bdcbb0269c0a83.rmeta --extern cranelift_module=/opt/rustwide/target/debug/deps/libcranelift_module-2c91afec2ebc2780.rmeta --extern cranelift_native=/opt/rustwide/target/debug/deps/libcranelift_native-c8ebe2e82e0c9f01.rmeta --extern cranelift_object=/opt/rustwide/target/debug/deps/libcranelift_object-b91a5374a4237ded.rmeta --extern slot_arena=/opt/rustwide/target/debug/deps/libslot_arena-ff2994ab1886a656.rmeta --extern target_lexicon=/opt/rustwide/target/debug/deps/libtarget_lexicon-37975bdee97367f7.rmeta --extern termcolor=/opt/rustwide/target/debug/deps/libtermcolor-7a6fa3ae8a6bc9e4.rmeta --extern unicode_width=/opt/rustwide/target/debug/deps/libunicode_width-9b037eda9e410b36.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-ed054213fc97a96c.rmeta --cap-lints=warn --crate-version 0.5.0-alpha` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "152451327db3357d5d4f1a6ec7f6e37b3954707fe44982ce92bfa11ae37fc4ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "152451327db3357d5d4f1a6ec7f6e37b3954707fe44982ce92bfa11ae37fc4ef", kill_on_drop: false }`
[INFO] [stdout] 152451327db3357d5d4f1a6ec7f6e37b3954707fe44982ce92bfa11ae37fc4ef
