[INFO] cloning repository https://github.com/kotokz/tc_tool
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kotokz/tc_tool" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkotokz%2Ftc_tool", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkotokz%2Ftc_tool'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 176bf5523aaf91cb1455e3c96c07f21391346764
[INFO] documenting kotokz/tc_tool against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkotokz%2Ftc_tool" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kotokz/tc_tool 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 git repo https://github.com/kotokz/tc_tool
[INFO] finished tweaking git repo https://github.com/kotokz/tc_tool
[INFO] tweaked toml for git repo https://github.com/kotokz/tc_tool written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/kotokz/tc_tool already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] d73439fc1421786bd385b0ed1799706eedbcc5b7ac83406db52d1197a70817cc
[INFO] running `Command { std: "docker" "start" "-a" "d73439fc1421786bd385b0ed1799706eedbcc5b7ac83406db52d1197a70817cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d73439fc1421786bd385b0ed1799706eedbcc5b7ac83406db52d1197a70817cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d73439fc1421786bd385b0ed1799706eedbcc5b7ac83406db52d1197a70817cc", kill_on_drop: false }`
[INFO] [stdout] d73439fc1421786bd385b0ed1799706eedbcc5b7ac83406db52d1197a70817cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 579a9af89c6cd6691746fcb94a1b9b4085058aacb962ade9774a46808d536a89
[INFO] running `Command { std: "docker" "start" "-a" "579a9af89c6cd6691746fcb94a1b9b4085058aacb962ade9774a46808d536a89", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking vec_map v0.6.0
[INFO] [stderr]     Checking fnv v1.0.5
[INFO] [stderr]     Checking lazy_static v0.2.4
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]     Checking thread-id v3.0.0
[INFO] [stderr]     Checking term_size v0.2.3
[INFO] [stderr]     Checking aho-corasick v0.6.2
[INFO] [stderr]     Checking thread_local v0.3.3
[INFO] [stderr]     Checking clap v2.20.5
[INFO] [stderr]     Checking regex v0.2.1
[INFO] [stderr]  Documenting tc_tool v0.1.0 (/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(slice_patterns, test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `slice_patterns` has been stable since 1.42.0 and no longer requires an attribute to enable
[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 `tc_tool`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name tc_tool src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-88b80955d805e290.rmeta --extern fnv=/opt/rustwide/target/debug/deps/libfnv-7bf96a3c286d2019.rmeta --extern glob=/opt/rustwide/target/debug/deps/libglob-61b3d0371d1ed0dd.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-eac09252246dcc66.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-53f62a3fbea137d4.rmeta --extern time=/opt/rustwide/target/debug/deps/libtime-994ececd7d5dacf8.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "579a9af89c6cd6691746fcb94a1b9b4085058aacb962ade9774a46808d536a89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "579a9af89c6cd6691746fcb94a1b9b4085058aacb962ade9774a46808d536a89", kill_on_drop: false }`
[INFO] [stdout] 579a9af89c6cd6691746fcb94a1b9b4085058aacb962ade9774a46808d536a89
