[INFO] cloning repository https://github.com/emmericp/advent-of-code-2019
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/emmericp/advent-of-code-2019" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femmericp%2Fadvent-of-code-2019", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femmericp%2Fadvent-of-code-2019'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f455be1c256fb603b5438b1adc1d89d3bd3e4de1
[INFO] documenting emmericp/advent-of-code-2019 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femmericp%2Fadvent-of-code-2019" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/emmericp/advent-of-code-2019 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/emmericp/advent-of-code-2019
[INFO] finished tweaking git repo https://github.com/emmericp/advent-of-code-2019
[INFO] tweaked toml for git repo https://github.com/emmericp/advent-of-code-2019 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/emmericp/advent-of-code-2019 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] decf272dbc41776115fe8641170ba926f4180e416cd672b3890f2fae123cde74
[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" "decf272dbc41776115fe8641170ba926f4180e416cd672b3890f2fae123cde74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "decf272dbc41776115fe8641170ba926f4180e416cd672b3890f2fae123cde74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "decf272dbc41776115fe8641170ba926f4180e416cd672b3890f2fae123cde74", kill_on_drop: false }`
[INFO] [stdout] decf272dbc41776115fe8641170ba926f4180e416cd672b3890f2fae123cde74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b6e4c230bf5345ba0a3ab9a342f7e3776ce371a032844de855ba0282e87ee75
[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" "6b6e4c230bf5345ba0a3ab9a342f7e3776ce371a032844de855ba0282e87ee75", kill_on_drop: false }`
[INFO] [stderr]     Checking num-rational v0.2.2
[INFO] [stderr]     Checking modinverse v0.1.1
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking image v0.22.3
[INFO] [stderr]     Checking mod_exp v1.0.1
[INFO] [stderr]     Checking advent-of-code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting advent-of-code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `advent-of-code`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name day8 src/bin/day8.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern advent_of_code=/opt/rustwide/target/debug/deps/libadvent_of_code-ead485203828d935.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-0691056875470d25.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-5ad68357c26dda65.rmeta --extern mod_exp=/opt/rustwide/target/debug/deps/libmod_exp-61f49a12c2558069.rmeta --extern modinverse=/opt/rustwide/target/debug/deps/libmodinverse-a38793b64ce9cd9c.rmeta --extern permutohedron=/opt/rustwide/target/debug/deps/libpermutohedron-476c7da6e7614d21.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-68e53095d8962eec.rmeta --cap-lints=warn` (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" "6b6e4c230bf5345ba0a3ab9a342f7e3776ce371a032844de855ba0282e87ee75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b6e4c230bf5345ba0a3ab9a342f7e3776ce371a032844de855ba0282e87ee75", kill_on_drop: false }`
[INFO] [stdout] 6b6e4c230bf5345ba0a3ab9a342f7e3776ce371a032844de855ba0282e87ee75