[INFO] fetching crate vicis 0.1.0...
[INFO] documenting vicis-0.1.0 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate vicis 0.1.0 into /workspace/builds/worker-56/source
[INFO] validating manifest of crates.io crate vicis 0.1.0 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vicis 0.1.0
[INFO] finished tweaking crates.io crate vicis 0.1.0
[INFO] tweaked toml for crates.io crate vicis 0.1.0 written to /workspace/builds/worker-56/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b908bec9af9a1ae297d7cabaaebdb41804a6246e955e10ca06ab8a2d08f06ce9
[INFO] running `Command { std: "docker" "start" "-a" "b908bec9af9a1ae297d7cabaaebdb41804a6246e955e10ca06ab8a2d08f06ce9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b908bec9af9a1ae297d7cabaaebdb41804a6246e955e10ca06ab8a2d08f06ce9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b908bec9af9a1ae297d7cabaaebdb41804a6246e955e10ca06ab8a2d08f06ce9", kill_on_drop: false }`
[INFO] [stdout] b908bec9af9a1ae297d7cabaaebdb41804a6246e955e10ca06ab8a2d08f06ce9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8404fbb6b87f3f3faed02051fa6644515b9630677248e4aed7e0a1ec708b1282
[INFO] running `Command { std: "docker" "start" "-a" "8404fbb6b87f3f3faed02051fa6644515b9630677248e4aed7e0a1ec708b1282", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]    Compiling anyhow v1.0.38
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]     Checking number_prefix v0.3.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking id-arena v2.2.1
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]    Compiling nom v6.0.1
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking bitvec v0.19.5
[INFO] [stderr]     Checking console v0.14.1
[INFO] [stderr]     Checking indicatif v0.15.0
[INFO] [stderr]  Documenting vicis v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(vec_into_raw_parts)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `vicis`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name vicis src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-2bb0455753a8f12d.rmeta --extern either=/opt/rustwide/target/debug/deps/libeither-c2989fcf2933251d.rmeta --extern funty=/opt/rustwide/target/debug/deps/libfunty-af00bc97db0a61a5.rmeta --extern id_arena=/opt/rustwide/target/debug/deps/libid_arena-a77de037544712f1.rmeta --extern indicatif=/opt/rustwide/target/debug/deps/libindicatif-f5a74f37cd56a4c7.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-393cb5d620d4a398.rmeta --extern rustc_hash=/opt/rustwide/target/debug/deps/librustc_hash-435af4ab78bf1cae.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "8404fbb6b87f3f3faed02051fa6644515b9630677248e4aed7e0a1ec708b1282", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8404fbb6b87f3f3faed02051fa6644515b9630677248e4aed7e0a1ec708b1282", kill_on_drop: false }`
[INFO] [stdout] 8404fbb6b87f3f3faed02051fa6644515b9630677248e4aed7e0a1ec708b1282
