[INFO] cloning repository https://github.com/balintbalazs/advent-of-code-2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/balintbalazs/advent-of-code-2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbalintbalazs%2Fadvent-of-code-2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbalintbalazs%2Fadvent-of-code-2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a4d61a71442e88c05f01062db2194a9792ceb5ce
[INFO] documenting balintbalazs/advent-of-code-2020 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%2Fbalintbalazs%2Fadvent-of-code-2020" "/workspace/builds/worker-25/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-25/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/balintbalazs/advent-of-code-2020 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/balintbalazs/advent-of-code-2020
[INFO] finished tweaking git repo https://github.com/balintbalazs/advent-of-code-2020
[INFO] tweaked toml for git repo https://github.com/balintbalazs/advent-of-code-2020 written to /workspace/builds/worker-25/source/Cargo.toml
[INFO] crate git repo https://github.com/balintbalazs/advent-of-code-2020 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded scan_fmt v0.2.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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] 75855fa18e07dc84a13abc3721a0dd3026b8c5924a7c4a36e61c6175d86a197b
[INFO] running `Command { std: "docker" "start" "-a" "75855fa18e07dc84a13abc3721a0dd3026b8c5924a7c4a36e61c6175d86a197b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75855fa18e07dc84a13abc3721a0dd3026b8c5924a7c4a36e61c6175d86a197b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75855fa18e07dc84a13abc3721a0dd3026b8c5924a7c4a36e61c6175d86a197b", kill_on_drop: false }`
[INFO] [stdout] 75855fa18e07dc84a13abc3721a0dd3026b8c5924a7c4a36e61c6175d86a197b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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] 767847a22372728c7ff083f92a83b40ec068927176d4a126177b464361e79ef9
[INFO] running `Command { std: "docker" "start" "-a" "767847a22372728c7ff083f92a83b40ec068927176d4a126177b464361e79ef9", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling syn v1.0.53
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking scan_fmt v0.2.5
[INFO] [stderr]     Checking pp v0.1.0 (/opt/rustwide/workdir/pp)
[INFO] [stderr]     Checking advent-of-code-2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting advent-of-code-2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not document `advent-of-code-2020`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name day4 src/bin/day4.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=5ae784d4abd11ef6 -L dependency=/opt/rustwide/target/debug/deps --extern advent_of_code_2020=/opt/rustwide/target/debug/deps/libadvent_of_code_2020-c2977080504ef423.rmeta --extern pp=/opt/rustwide/target/debug/deps/libpp-19fa1767859ba9b1.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-7f7c07494e82902c.rmeta --extern scan_fmt=/opt/rustwide/target/debug/deps/libscan_fmt-8e33dadf443384cd.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-4b8b7fd745fa4fbc.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] running `Command { std: "docker" "inspect" "767847a22372728c7ff083f92a83b40ec068927176d4a126177b464361e79ef9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "767847a22372728c7ff083f92a83b40ec068927176d4a126177b464361e79ef9", kill_on_drop: false }`
[INFO] [stdout] 767847a22372728c7ff083f92a83b40ec068927176d4a126177b464361e79ef9