[INFO] cloning repository https://github.com/troiganto/aoc-2018
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/troiganto/aoc-2018" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftroiganto%2Faoc-2018", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftroiganto%2Faoc-2018'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b8682e88ef160f3fdef8c660ff27bebfd1254735
[INFO] documenting troiganto/aoc-2018 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftroiganto%2Faoc-2018" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/troiganto/aoc-2018 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/troiganto/aoc-2018
[INFO] finished tweaking git repo https://github.com/troiganto/aoc-2018
[INFO] tweaked toml for git repo https://github.com/troiganto/aoc-2018 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/troiganto/aoc-2018 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded intrusive-collections v0.7.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f0d4c2589301b00cfd0b3d90f9c373922e7fedfa9e3ef9b6767e69fa70816b17
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f0d4c2589301b00cfd0b3d90f9c373922e7fedfa9e3ef9b6767e69fa70816b17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f0d4c2589301b00cfd0b3d90f9c373922e7fedfa9e3ef9b6767e69fa70816b17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0d4c2589301b00cfd0b3d90f9c373922e7fedfa9e3ef9b6767e69fa70816b17", kill_on_drop: false }`
[INFO] [stdout] f0d4c2589301b00cfd0b3d90f9c373922e7fedfa9e3ef9b6767e69fa70816b17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d5cfd2c5286a6abab9aaa6d047c26065ba0c9af30f95018a43c5998dc521354
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5d5cfd2c5286a6abab9aaa6d047c26065ba0c9af30f95018a43c5998dc521354", kill_on_drop: false }`
[INFO] [stderr]     Checking boolinator v2.4.0
[INFO] [stderr]     Checking intrusive-collections v0.7.8
[INFO] [stderr]     Checking arrayvec v0.4.8
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]     Checking inflate v0.4.3
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking nom v4.1.1
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking rayon v1.0.3
[INFO] [stderr]    Compiling num-derive v0.2.3
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking tiff v0.2.1
[INFO] [stderr]     Checking image v0.20.1
[INFO] [stderr]  Documenting aoc-2018 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `aoc-2018`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name task35 src/bin/task35.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern boolinator=/opt/rustwide/target/debug/deps/libboolinator-8b9a232f6b606a2e.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-7824ae2a87859026.rmeta --extern intrusive_collections=/opt/rustwide/target/debug/deps/libintrusive_collections-f2c08340999d2d91.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-d711448a26d8eca0.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "5d5cfd2c5286a6abab9aaa6d047c26065ba0c9af30f95018a43c5998dc521354", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d5cfd2c5286a6abab9aaa6d047c26065ba0c9af30f95018a43c5998dc521354", kill_on_drop: false }`
[INFO] [stdout] 5d5cfd2c5286a6abab9aaa6d047c26065ba0c9af30f95018a43c5998dc521354