[INFO] cloning repository https://github.com/davidsullins/AdventOfRust2016
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/davidsullins/AdventOfRust2016" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidsullins%2FAdventOfRust2016", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidsullins%2FAdventOfRust2016'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 28c0d8fa63c510afdd063df1c0034ea2507a068f
[INFO] documenting davidsullins/AdventOfRust2016 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidsullins%2FAdventOfRust2016" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/davidsullins/AdventOfRust2016 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/davidsullins/AdventOfRust2016
[INFO] finished tweaking git repo https://github.com/davidsullins/AdventOfRust2016
[INFO] tweaked toml for git repo https://github.com/davidsullins/AdventOfRust2016 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/davidsullins/AdventOfRust2016 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-cpupool v0.1.2
[INFO] [stderr]   Downloaded futures v0.1.7
[INFO] [stderr]   Downloaded aho-corasick v0.6.1
[INFO] [stderr]   Downloaded thread_local v0.3.2
[INFO] [stderr]   Downloaded md5 v0.3.2
[INFO] [stderr]   Downloaded permutohedron v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2020-08-29" "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] f664242d85c83bc66991b9e284ffea4b95a579a9782e63728706745f37fc5a3d
[INFO] running `Command { std: "docker" "start" "-a" "f664242d85c83bc66991b9e284ffea4b95a579a9782e63728706745f37fc5a3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f664242d85c83bc66991b9e284ffea4b95a579a9782e63728706745f37fc5a3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f664242d85c83bc66991b9e284ffea4b95a579a9782e63728706745f37fc5a3d", kill_on_drop: false }`
[INFO] [stdout] f664242d85c83bc66991b9e284ffea4b95a579a9782e63728706745f37fc5a3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2020-08-29" "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] 5091867c3d82866ae1735c8f411844052968ea759373d0db8a45e3293695456a
[INFO] running `Command { std: "docker" "start" "-a" "5091867c3d82866ae1735c8f411844052968ea759373d0db8a45e3293695456a", kill_on_drop: false }`
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]     Checking md5 v0.3.2
[INFO] [stderr]     Checking permutohedron v0.2.2
[INFO] [stderr]     Checking thread-id v3.0.0
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking num_cpus v1.2.0
[INFO] [stderr]     Checking futures v0.1.7
[INFO] [stderr]     Checking thread_local v0.3.2
[INFO] [stderr]     Checking aho-corasick v0.6.1
[INFO] [stderr]     Checking regex v0.2.1
[INFO] [stderr]     Checking futures-cpupool v0.1.2
[INFO] [stderr]     Checking AdventOfRust2016 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting AdventOfRust2016 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `AdventOfRust2016`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name advent20 src/bin/advent20.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern common=/opt/rustwide/target/debug/deps/libcommon-586cdcb9e5858033.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-4019b489664e4d78.rmeta --extern futures_cpupool=/opt/rustwide/target/debug/deps/libfutures_cpupool-6c7d0ecd3f24ae2e.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-218116732aa434b6.rmeta --extern md5=/opt/rustwide/target/debug/deps/libmd5-14dfdd45a71c52d5.rmeta --extern permutohedron=/opt/rustwide/target/debug/deps/libpermutohedron-35b807fe032813dc.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-b3097556ca427aff.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" "5091867c3d82866ae1735c8f411844052968ea759373d0db8a45e3293695456a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5091867c3d82866ae1735c8f411844052968ea759373d0db8a45e3293695456a", kill_on_drop: false }`
[INFO] [stdout] 5091867c3d82866ae1735c8f411844052968ea759373d0db8a45e3293695456a