[INFO] cloning repository https://github.com/pyaillet/aoc2021
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pyaillet/aoc2021" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpyaillet%2Faoc2021", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpyaillet%2Faoc2021'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e170ab0c228768b63fe24c291d74b430cf8b60b9
[INFO] documenting pyaillet/aoc2021 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%2Fpyaillet%2Faoc2021" "/workspace/builds/worker-17/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-17/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pyaillet/aoc2021 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/pyaillet/aoc2021
[INFO] finished tweaking git repo https://github.com/pyaillet/aoc2021
[INFO] tweaked toml for git repo https://github.com/pyaillet/aoc2021 written to /workspace/builds/worker-17/source/Cargo.toml
[INFO] crate git repo https://github.com/pyaillet/aoc2021 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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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] df804d01682dbd707131c232485afee2e5d11a80a11c1d1793c2ba48fb62aef3
[INFO] running `Command { std: "docker" "start" "-a" "df804d01682dbd707131c232485afee2e5d11a80a11c1d1793c2ba48fb62aef3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df804d01682dbd707131c232485afee2e5d11a80a11c1d1793c2ba48fb62aef3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df804d01682dbd707131c232485afee2e5d11a80a11c1d1793c2ba48fb62aef3", kill_on_drop: false }`
[INFO] [stdout] df804d01682dbd707131c232485afee2e5d11a80a11c1d1793c2ba48fb62aef3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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] 252950b99354d880b50ba5d9485463056769db74d3b1919f09595d5fffe72464
[INFO] running `Command { std: "docker" "start" "-a" "252950b99354d880b50ba5d9485463056769db74d3b1919f09595d5fffe72464", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]  Documenting day_06_2 v0.1.0 (/opt/rustwide/workdir/day_06_2)
[INFO] [stderr]  Documenting day_07_2 v0.1.0 (/opt/rustwide/workdir/day_07_2)
[INFO] [stderr]  Documenting day_05_1 v0.1.0 (/opt/rustwide/workdir/day_05_1)
[INFO] [stderr]  Documenting day_02_1 v0.1.0 (/opt/rustwide/workdir/day_02_1)
[INFO] [stderr]  Documenting day_03_2 v0.1.0 (/opt/rustwide/workdir/day_03_2)
[INFO] [stderr]  Documenting day_06_1 v0.1.0 (/opt/rustwide/workdir/day_06_1)
[INFO] [stderr]  Documenting day_08_1 v0.1.0 (/opt/rustwide/workdir/day_08_1_2)
[INFO] [stderr]  Documenting day_07_1 v0.1.0 (/opt/rustwide/workdir/day_07_1)
[INFO] [stderr]  Documenting day_05_2 v0.1.0 (/opt/rustwide/workdir/day_05_2)
[INFO] [stderr]  Documenting day_02_2 v0.1.0 (/opt/rustwide/workdir/day_02_2)
[INFO] [stderr]  Documenting day_03_1 v0.1.0 (/opt/rustwide/workdir/day_03_1)
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-1.5.4/src/lib.rs:609:42
[INFO] [stdout]     |
[INFO] [stdout] 609 | #![cfg_attr(feature = "pattern", feature(pattern))]
[INFO] [stdout]     |                                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `day_05_2`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name day_05_2 day_05_2/src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=7fe3e498fb17dd8e -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 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 compile `regex` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "252950b99354d880b50ba5d9485463056769db74d3b1919f09595d5fffe72464", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "252950b99354d880b50ba5d9485463056769db74d3b1919f09595d5fffe72464", kill_on_drop: false }`
[INFO] [stdout] 252950b99354d880b50ba5d9485463056769db74d3b1919f09595d5fffe72464