[INFO] cloning repository https://github.com/shelvacu/fwrf
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shelvacu/fwrf" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshelvacu%2Ffwrf", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshelvacu%2Ffwrf'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f92ec7a6752a17deeeb9979f58f5d261aa9f4473
[INFO] documenting shelvacu/fwrf against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshelvacu%2Ffwrf" "/workspace/builds/worker-21/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-21/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shelvacu/fwrf on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shelvacu/fwrf
[INFO] finished tweaking git repo https://github.com/shelvacu/fwrf
[INFO] tweaked toml for git repo https://github.com/shelvacu/fwrf written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] crate git repo https://github.com/shelvacu/fwrf already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/shelvacu/deranged`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded progressing v3.0.2
[INFO] [stderr]   Downloaded devtimer v4.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 81f72d7268f892421b35e979504fc94ebcf12aa2d6e352772cfa1d62eb8e5708
[INFO] running `Command { std: "docker" "start" "-a" "81f72d7268f892421b35e979504fc94ebcf12aa2d6e352772cfa1d62eb8e5708", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "81f72d7268f892421b35e979504fc94ebcf12aa2d6e352772cfa1d62eb8e5708", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81f72d7268f892421b35e979504fc94ebcf12aa2d6e352772cfa1d62eb8e5708", kill_on_drop: false }`
[INFO] [stdout] 81f72d7268f892421b35e979504fc94ebcf12aa2d6e352772cfa1d62eb8e5708
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16e37fae289b76b03a445c2617e877e985857a2b939f69103b366430c4b5d7b7
[INFO] running `Command { std: "docker" "start" "-a" "16e37fae289b76b03a445c2617e877e985857a2b939f69103b366430c4b5d7b7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.124
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking devtimer v4.0.1
[INFO] [stderr]     Checking deranged v0.2.0 (https://github.com/shelvacu/deranged?branch=array-indexes#db60d169)
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking progressing v3.0.2
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]  Documenting fwrf v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(type_ascription, array_zip, min_specialization)]
[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 `fwrf`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name fwrf src/main.rs -o /opt/rustwide/target/doc --cfg 'feature="charset-english-small"' --cfg 'feature="charset-size-32"' --cfg 'feature="default"' --cfg 'feature="default-unsized"' --cfg 'feature="fnvmap"' --cfg 'feature="height-5"' --cfg 'feature="row-by-row"' --cfg 'feature="square"' --cfg 'feature="width-5"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=88d88cba12c86abd -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-5b6a033d16fa1d59.rmeta --extern crossbeam_channel=/opt/rustwide/target/debug/deps/libcrossbeam_channel-0828918ca0bde37b.rmeta --extern deranged=/opt/rustwide/target/debug/deps/libderanged-3bb501bb2fcf0e2f.rmeta --extern devtimer=/opt/rustwide/target/debug/deps/libdevtimer-6bb1e207d771493a.rmeta --extern fnv=/opt/rustwide/target/debug/deps/libfnv-5eaa67ceb9d9bb54.rmeta --extern progressing=/opt/rustwide/target/debug/deps/libprogressing-01991503fa51ec1f.rmeta --extern static_assertions=/opt/rustwide/target/debug/deps/libstatic_assertions-df62a6794b74038e.rmeta --cap-lints=warn --crate-version 1.0.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "16e37fae289b76b03a445c2617e877e985857a2b939f69103b366430c4b5d7b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16e37fae289b76b03a445c2617e877e985857a2b939f69103b366430c4b5d7b7", kill_on_drop: false }`
[INFO] [stdout] 16e37fae289b76b03a445c2617e877e985857a2b939f69103b366430c4b5d7b7