[INFO] cloning repository https://github.com/cadaverine/k-combinations
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cadaverine/k-combinations" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcadaverine%2Fk-combinations", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcadaverine%2Fk-combinations'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7e1a3e1ca43560cf72da504cf7b334474cefb87e
[INFO] documenting cadaverine/k-combinations against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcadaverine%2Fk-combinations" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] [stderr] Updating files:  60% (3/5)
Updating files:  80% (4/5)
Updating files: 100% (5/5)
Updating files: 100% (5/5), done.
[INFO] validating manifest of git repo https://github.com/cadaverine/k-combinations on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cadaverine/k-combinations
[INFO] finished tweaking git repo https://github.com/cadaverine/k-combinations
[INFO] tweaked toml for git repo https://github.com/cadaverine/k-combinations written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/cadaverine/k-combinations already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4a613848a9dfcbcb29610e168c338c5cadb7c178c0bffa18eecb36dfdaa4f4b9
[INFO] running `Command { std: "docker" "start" "-a" "4a613848a9dfcbcb29610e168c338c5cadb7c178c0bffa18eecb36dfdaa4f4b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a613848a9dfcbcb29610e168c338c5cadb7c178c0bffa18eecb36dfdaa4f4b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a613848a9dfcbcb29610e168c338c5cadb7c178c0bffa18eecb36dfdaa4f4b9", kill_on_drop: false }`
[INFO] [stdout] 4a613848a9dfcbcb29610e168c338c5cadb7c178c0bffa18eecb36dfdaa4f4b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 675da9475dcfe730409196c494c797e3d61a185ac93d5defbe9f7fa7ed22eb6c
[INFO] running `Command { std: "docker" "start" "-a" "675da9475dcfe730409196c494c797e3d61a185ac93d5defbe9f7fa7ed22eb6c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Documenting k-combinations v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.98s
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "675da9475dcfe730409196c494c797e3d61a185ac93d5defbe9f7fa7ed22eb6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "675da9475dcfe730409196c494c797e3d61a185ac93d5defbe9f7fa7ed22eb6c", kill_on_drop: false }`
[INFO] [stdout] 675da9475dcfe730409196c494c797e3d61a185ac93d5defbe9f7fa7ed22eb6c