[INFO] fetching crate byml 0.1.4...
[INFO] documenting byml-0.1.4 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate byml 0.1.4 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate byml 0.1.4 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate byml 0.1.4
[INFO] finished tweaking crates.io crate byml 0.1.4
[INFO] tweaked toml for crates.io crate byml 0.1.4 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded binwrite_derive v0.2.1
[INFO] [stderr]   Downloaded binwrite v0.2.1
[INFO] [stderr]   Downloaded yaz0 v0.1.2
[INFO] [stderr]   Downloaded cached_proc_macro v0.4.0
[INFO] [stderr]   Downloaded parse_int v0.4.0
[INFO] [stderr]   Downloaded binread v1.4.1
[INFO] [stderr]   Downloaded binread_derive v1.4.3
[INFO] [stderr]   Downloaded cached v0.20.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2f607122aee8d5e3d4dd9209dc3eed5ac7f58b4cca3abc5355d02b6ab7416006
[INFO] running `Command { std: "docker" "start" "-a" "2f607122aee8d5e3d4dd9209dc3eed5ac7f58b4cca3abc5355d02b6ab7416006", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f607122aee8d5e3d4dd9209dc3eed5ac7f58b4cca3abc5355d02b6ab7416006", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f607122aee8d5e3d4dd9209dc3eed5ac7f58b4cca3abc5355d02b6ab7416006", kill_on_drop: false }`
[INFO] [stdout] 2f607122aee8d5e3d4dd9209dc3eed5ac7f58b4cca3abc5355d02b6ab7416006
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+1.76.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d1261f443b98db5da96a3252d606389847d258b10d68453cbc4e3dd0c167a8d
[INFO] running `Command { std: "docker" "start" "-a" "2d1261f443b98db5da96a3252d606389847d258b10d68453cbc4e3dd0c167a8d", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]    Compiling event-listener v2.5.3
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling async-trait v0.1.77
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling async-mutex v1.4.0
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking rayon v1.8.1
[INFO] [stderr]     Checking parse_int v0.4.0
[INFO] [stderr]     Checking yaz0 v0.1.2
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling thiserror-impl v1.0.57
[INFO] [stderr]    Compiling binwrite_derive v0.2.1
[INFO] [stderr]    Compiling binread_derive v1.4.3
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking thiserror v1.0.57
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]     Checking binwrite v0.2.1
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling cached_proc_macro v0.4.0
[INFO] [stderr]     Checking binread v1.4.1
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking cached v0.20.0
[INFO] [stderr]  Documenting byml v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(seek_convenience)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 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 `byml`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2018 --crate-type lib --crate-name byml src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=fd100b92954b0c61 -L dependency=/opt/rustwide/target/debug/deps --extern base64=/opt/rustwide/target/debug/deps/libbase64-28bf0295bca7d70d.rmeta --extern binread=/opt/rustwide/target/debug/deps/libbinread-9c3ccea06663f3ff.rmeta --extern binwrite=/opt/rustwide/target/debug/deps/libbinwrite-30931ea94c59303a.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-4d0457ff00ff859b.rmeta --extern cached=/opt/rustwide/target/debug/deps/libcached-436c60e706614a10.rmeta --extern indexmap=/opt/rustwide/target/debug/deps/libindexmap-edf6bb65c4d19644.rmeta --extern parse_int=/opt/rustwide/target/debug/deps/libparse_int-715b65714bbbf6fd.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-cc0e243b6c53ea48.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-4db761c906823b65.rmeta --extern yaz0=/opt/rustwide/target/debug/deps/libyaz0-4c2e79ea8a1e8b1d.rmeta --cap-lints=warn --crate-version 0.1.4` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "2d1261f443b98db5da96a3252d606389847d258b10d68453cbc4e3dd0c167a8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d1261f443b98db5da96a3252d606389847d258b10d68453cbc4e3dd0c167a8d", kill_on_drop: false }`
[INFO] [stdout] 2d1261f443b98db5da96a3252d606389847d258b10d68453cbc4e3dd0c167a8d
