[INFO] cloning repository https://github.com/vkasljevic/devmates_tasks
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vkasljevic/devmates_tasks" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvkasljevic%2Fdevmates_tasks", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvkasljevic%2Fdevmates_tasks'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3a9d7d715303ce5856c032e9284f1c7388176d1b
[INFO] documenting vkasljevic/devmates_tasks 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%2Fvkasljevic%2Fdevmates_tasks" "/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/vkasljevic/devmates_tasks 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/vkasljevic/devmates_tasks
[INFO] finished tweaking git repo https://github.com/vkasljevic/devmates_tasks
[INFO] tweaked toml for git repo https://github.com/vkasljevic/devmates_tasks written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/vkasljevic/devmates_tasks 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] 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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 90b1a878887e6a18583a1492a9452a5bba77ee847890be9a4e0c1591af98fcdb
[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" "90b1a878887e6a18583a1492a9452a5bba77ee847890be9a4e0c1591af98fcdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90b1a878887e6a18583a1492a9452a5bba77ee847890be9a4e0c1591af98fcdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90b1a878887e6a18583a1492a9452a5bba77ee847890be9a4e0c1591af98fcdb", kill_on_drop: false }`
[INFO] [stdout] 90b1a878887e6a18583a1492a9452a5bba77ee847890be9a4e0c1591af98fcdb
[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" "+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] 8964bd9d611170e9310e316ae77b66c95d4836329da08e4f9ac3123160b50886
[INFO] running `Command { std: "docker" "start" "-a" "8964bd9d611170e9310e316ae77b66c95d4836329da08e4f9ac3123160b50886", kill_on_drop: false }`
[INFO] [stderr]  Documenting devmates_tasks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `devmates_tasks`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name task_2019_08_22 src/task_2019_08_22.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --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" "8964bd9d611170e9310e316ae77b66c95d4836329da08e4f9ac3123160b50886", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8964bd9d611170e9310e316ae77b66c95d4836329da08e4f9ac3123160b50886", kill_on_drop: false }`
[INFO] [stdout] 8964bd9d611170e9310e316ae77b66c95d4836329da08e4f9ac3123160b50886