[INFO] cloning repository https://github.com/amnn/adventofcode-2018
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/amnn/adventofcode-2018" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famnn%2Fadventofcode-2018", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famnn%2Fadventofcode-2018'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 149174a4a021f051b577d331460eed48b3c8199d
[INFO] documenting amnn/adventofcode-2018 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%2Famnn%2Fadventofcode-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/amnn/adventofcode-2018 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/amnn/adventofcode-2018
[INFO] finished tweaking git repo https://github.com/amnn/adventofcode-2018
[INFO] tweaked toml for git repo https://github.com/amnn/adventofcode-2018 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/amnn/adventofcode-2018 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] 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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e10d7701633650dfc01ad31d7dffed2453143a86a92fbc472fcede5bd42dba4e
[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" "e10d7701633650dfc01ad31d7dffed2453143a86a92fbc472fcede5bd42dba4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e10d7701633650dfc01ad31d7dffed2453143a86a92fbc472fcede5bd42dba4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e10d7701633650dfc01ad31d7dffed2453143a86a92fbc472fcede5bd42dba4e", kill_on_drop: false }`
[INFO] [stdout] e10d7701633650dfc01ad31d7dffed2453143a86a92fbc472fcede5bd42dba4e
[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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7211bff47db0f0aada2761f9addbab3a26bb7a2914d35d59f53c60c15c5087bc
[INFO] running `Command { std: "docker" "start" "-a" "7211bff47db0f0aada2761f9addbab3a26bb7a2914d35d59f53c60c15c5087bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling num-derive v0.2.3
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking termion v1.5.1
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking scan_fmt v0.1.3
[INFO] [stderr]     Checking adventofcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting adventofcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `adventofcode`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name lib src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern num_derive=/opt/rustwide/target/debug/deps/libnum_derive-ed4d5273b68e7882.so --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-cc71a04ce11d3e1f.rmeta --extern scan_fmt=/opt/rustwide/target/debug/deps/libscan_fmt-99484351208f55c9.rmeta --extern termion=/opt/rustwide/target/debug/deps/libtermion-f728bb02db3e3e66.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" "7211bff47db0f0aada2761f9addbab3a26bb7a2914d35d59f53c60c15c5087bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7211bff47db0f0aada2761f9addbab3a26bb7a2914d35d59f53c60c15c5087bc", kill_on_drop: false }`
[INFO] [stdout] 7211bff47db0f0aada2761f9addbab3a26bb7a2914d35d59f53c60c15c5087bc