[INFO] cloning repository https://github.com/gavynriebau/rrat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gavynriebau/rrat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgavynriebau%2Frrat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgavynriebau%2Frrat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a1f40486cec23c2047998a16f15361032e486167
[INFO] documenting gavynriebau/rrat against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgavynriebau%2Frrat" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gavynriebau/rrat on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gavynriebau/rrat
[INFO] finished tweaking git repo https://github.com/gavynriebau/rrat
[INFO] tweaked toml for git repo https://github.com/gavynriebau/rrat written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/gavynriebau/rrat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded termcolor v0.3.3
[INFO] [stderr]   Downloaded env_logger v0.5.2
[INFO] [stderr]   Downloaded wincolor v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0488e6bc62ff66c816cab57db7ef81522dfaed7dccb9565fd3629140e79febc2
[INFO] running `Command { std: "docker" "start" "-a" "0488e6bc62ff66c816cab57db7ef81522dfaed7dccb9565fd3629140e79febc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0488e6bc62ff66c816cab57db7ef81522dfaed7dccb9565fd3629140e79febc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0488e6bc62ff66c816cab57db7ef81522dfaed7dccb9565fd3629140e79febc2", kill_on_drop: false }`
[INFO] [stdout] 0488e6bc62ff66c816cab57db7ef81522dfaed7dccb9565fd3629140e79febc2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af1a9c7ae417178cdc379f6f658c474b603e90a8889c8f4266154dbd560e0caa
[INFO] running `Command { std: "docker" "start" "-a" "af1a9c7ae417178cdc379f6f658c474b603e90a8889c8f4266154dbd560e0caa", kill_on_drop: false }`
[INFO] [stderr]     Checking termcolor v0.3.3
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking atty v0.2.6
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]     Checking regex v0.2.5
[INFO] [stderr]     Checking env_logger v0.5.2
[INFO] [stderr]  Documenting rrat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(libc)]
[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 `rrat`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name rrat 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-5bc78ae8b8b6a0cb.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-20f95b848ecd3417.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-e36ca1754b84a8a1.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-69fd9253e88d45f6.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "af1a9c7ae417178cdc379f6f658c474b603e90a8889c8f4266154dbd560e0caa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af1a9c7ae417178cdc379f6f658c474b603e90a8889c8f4266154dbd560e0caa", kill_on_drop: false }`
[INFO] [stdout] af1a9c7ae417178cdc379f6f658c474b603e90a8889c8f4266154dbd560e0caa
