[INFO] cloning repository https://github.com/vojta7/aoc2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vojta7/aoc2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvojta7%2Faoc2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvojta7%2Faoc2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6fc042b18a6da3ad6c386878f9702e9761c0e889
[INFO] documenting vojta7/aoc2020 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%2Fvojta7%2Faoc2020" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vojta7/aoc2020 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/vojta7/aoc2020
[INFO] finished tweaking git repo https://github.com/vojta7/aoc2020
[INFO] tweaked toml for git repo https://github.com/vojta7/aoc2020 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/vojta7/aoc2020 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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 751a3537e161ed392559bee1ec80260f7fd00f970848a4299839235723e19b0d
[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" "751a3537e161ed392559bee1ec80260f7fd00f970848a4299839235723e19b0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "751a3537e161ed392559bee1ec80260f7fd00f970848a4299839235723e19b0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "751a3537e161ed392559bee1ec80260f7fd00f970848a4299839235723e19b0d", kill_on_drop: false }`
[INFO] [stdout] 751a3537e161ed392559bee1ec80260f7fd00f970848a4299839235723e19b0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] c1a4796505a01177dc262d95ab2521e443544e2ac3d36390c09fa037f5c6d956
[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" "c1a4796505a01177dc262d95ab2521e443544e2ac3d36390c09fa037f5c6d956", kill_on_drop: false }`
[INFO] [stderr]  Documenting day5 v0.1.0 (/opt/rustwide/workdir/day5)
[INFO] [stderr]  Documenting day2 v0.1.0 (/opt/rustwide/workdir/day2)
[INFO] [stderr]  Documenting day1 v0.1.0 (/opt/rustwide/workdir/day1)
[INFO] [stderr]  Documenting day12 v0.1.0 (/opt/rustwide/workdir/day12)
[INFO] [stderr]  Documenting day19 v0.1.0 (/opt/rustwide/workdir/day19)
[INFO] [stderr]  Documenting day13 v0.1.0 (/opt/rustwide/workdir/day13)
[INFO] [stderr]  Documenting day16 v0.1.0 (/opt/rustwide/workdir/day16)
[INFO] [stderr]  Documenting day6 v0.1.0 (/opt/rustwide/workdir/day6)
[INFO] [stderr]  Documenting day18 v0.1.0 (/opt/rustwide/workdir/day18)
[INFO] [stderr]  Documenting day10 v0.1.0 (/opt/rustwide/workdir/day10)
[INFO] [stderr]  Documenting day15 v0.1.0 (/opt/rustwide/workdir/day15)
[INFO] [stderr]  Documenting day9 v0.1.0 (/opt/rustwide/workdir/day9)
[INFO] [stderr]  Documenting day14 v0.1.0 (/opt/rustwide/workdir/day14)
[INFO] [stderr]  Documenting day3 v0.1.0 (/opt/rustwide/workdir/day3)
[INFO] [stderr]  Documenting day7 v0.1.0 (/opt/rustwide/workdir/day7)
[INFO] [stderr]  Documenting day4 v0.1.0 (/opt/rustwide/workdir/day4)
[INFO] [stderr]  Documenting day17 v0.1.0 (/opt/rustwide/workdir/day17)
[INFO] [stderr] error: could not document `day15`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name day15 day15/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 --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" "c1a4796505a01177dc262d95ab2521e443544e2ac3d36390c09fa037f5c6d956", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1a4796505a01177dc262d95ab2521e443544e2ac3d36390c09fa037f5c6d956", kill_on_drop: false }`
[INFO] [stdout] c1a4796505a01177dc262d95ab2521e443544e2ac3d36390c09fa037f5c6d956