[INFO] cloning repository https://github.com/SergeevPavel/adventofcode2019
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SergeevPavel/adventofcode2019" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSergeevPavel%2Fadventofcode2019", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSergeevPavel%2Fadventofcode2019'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 99cb7272c905ef65576518a99f5bcfdb116e6792
[INFO] documenting SergeevPavel/adventofcode2019 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSergeevPavel%2Fadventofcode2019" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SergeevPavel/adventofcode2019 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SergeevPavel/adventofcode2019
[INFO] finished tweaking git repo https://github.com/SergeevPavel/adventofcode2019
[INFO] tweaked toml for git repo https://github.com/SergeevPavel/adventofcode2019 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/SergeevPavel/adventofcode2019 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", 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] f272e38a40668f35629ba8286d40bbe701ee2ce2baeea016318d9d846cc27e69
[INFO] running `Command { std: "docker" "start" "-a" "f272e38a40668f35629ba8286d40bbe701ee2ce2baeea016318d9d846cc27e69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f272e38a40668f35629ba8286d40bbe701ee2ce2baeea016318d9d846cc27e69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f272e38a40668f35629ba8286d40bbe701ee2ce2baeea016318d9d846cc27e69", kill_on_drop: false }`
[INFO] [stdout] f272e38a40668f35629ba8286d40bbe701ee2ce2baeea016318d9d846cc27e69
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60d838b8e7f04c263fbe0969260f855059d8f05f79576ee16905733213b0d22c
[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" "60d838b8e7f04c263fbe0969260f855059d8f05f79576ee16905733213b0d22c", kill_on_drop: false }`
[INFO] [stderr]     Checking termion v1.5.4
[INFO] [stderr]  Documenting adventofcode2019 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/day16.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 (acc + v)
[INFO] [stdout]    |                 ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `adventofcode2019`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name day15 src/day15.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern regex=/opt/rustwide/target/debug/deps/libregex-ba4a27fd61713b6f.rmeta --extern termion=/opt/rustwide/target/debug/deps/libtermion-3b9905c1b825dc62.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" "60d838b8e7f04c263fbe0969260f855059d8f05f79576ee16905733213b0d22c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60d838b8e7f04c263fbe0969260f855059d8f05f79576ee16905733213b0d22c", kill_on_drop: false }`
[INFO] [stdout] 60d838b8e7f04c263fbe0969260f855059d8f05f79576ee16905733213b0d22c
