[INFO] updating cached repository https://github.com/ocstl/advent_of_code_2015
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c272977ccb793734d1feceacf14ff30e35e234ef
[INFO] documenting ocstl/advent_of_code_2015 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Focstl%2Fadvent_of_code_2015" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ocstl/advent_of_code_2015 on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ocstl/advent_of_code_2015
[INFO] finished tweaking git repo https://github.com/ocstl/advent_of_code_2015
[INFO] tweaked toml for git repo https://github.com/ocstl/advent_of_code_2015 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/ocstl/advent_of_code_2015 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 38cc7d41969d30c96ea4e292d7b101161be0e4e0688338daaddeaab05b158271
[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" "38cc7d41969d30c96ea4e292d7b101161be0e4e0688338daaddeaab05b158271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38cc7d41969d30c96ea4e292d7b101161be0e4e0688338daaddeaab05b158271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38cc7d41969d30c96ea4e292d7b101161be0e4e0688338daaddeaab05b158271", kill_on_drop: false }`
[INFO] [stdout] 38cc7d41969d30c96ea4e292d7b101161be0e4e0688338daaddeaab05b158271
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3b703c105b1555192f4d5e3261c62f0282a096b6dfdb31a6511b600af386f744
[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" "3b703c105b1555192f4d5e3261c62f0282a096b6dfdb31a6511b600af386f744", kill_on_drop: false }`
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling serde v1.0.88
[INFO] [stderr]     Checking either v1.5.1
[INFO] [stderr]     Checking permutohedron v0.2.4
[INFO] [stderr]     Checking md5 v0.6.1
[INFO] [stderr]     Checking encoding-index-japanese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-korean v1.20141219.5
[INFO] [stderr]     Checking encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]     Checking encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking encoding v0.2.33
[INFO] [stderr]     Checking serde_json v1.0.38
[INFO] [stderr]     Checking advent_of_code_2015 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting advent_of_code_2015 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `advent_of_code_2015`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name advent_of_code_2015 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 encoding=/opt/rustwide/target/debug/deps/libencoding-560ee4b79f10a5b3.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-b3fb2d54dd3978e1.rmeta --extern md5=/opt/rustwide/target/debug/deps/libmd5-507ae9a7a8d0d75f.rmeta --extern permutohedron=/opt/rustwide/target/debug/deps/libpermutohedron-cb8a80df01564678.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-387c43330294a7e2.rmeta --cap-lints=forbid` (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" "3b703c105b1555192f4d5e3261c62f0282a096b6dfdb31a6511b600af386f744", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b703c105b1555192f4d5e3261c62f0282a096b6dfdb31a6511b600af386f744", kill_on_drop: false }`
[INFO] [stdout] 3b703c105b1555192f4d5e3261c62f0282a096b6dfdb31a6511b600af386f744