[INFO] cloning repository https://github.com/dfm/synacor-challenge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dfm/synacor-challenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdfm%2Fsynacor-challenge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdfm%2Fsynacor-challenge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e2d899b92e5d57176ecda345b415939c4bb9ece0
[INFO] documenting dfm/synacor-challenge against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdfm%2Fsynacor-challenge" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dfm/synacor-challenge on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dfm/synacor-challenge
[INFO] finished tweaking git repo https://github.com/dfm/synacor-challenge
[INFO] tweaked toml for git repo https://github.com/dfm/synacor-challenge written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/dfm/synacor-challenge already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7f0e01cca072d0fd4afe24bd3fab469985cc20ce863f2a99b2d5ffebbdc05ed0
[INFO] running `Command { std: "docker" "start" "-a" "7f0e01cca072d0fd4afe24bd3fab469985cc20ce863f2a99b2d5ffebbdc05ed0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f0e01cca072d0fd4afe24bd3fab469985cc20ce863f2a99b2d5ffebbdc05ed0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f0e01cca072d0fd4afe24bd3fab469985cc20ce863f2a99b2d5ffebbdc05ed0", kill_on_drop: false }`
[INFO] [stdout] 7f0e01cca072d0fd4afe24bd3fab469985cc20ce863f2a99b2d5ffebbdc05ed0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1ab17d01c86d9dbef2d8cf0514f1ee13498d57e035c8ad799aad5205f4a6206
[INFO] running `Command { std: "docker" "start" "-a" "e1ab17d01c86d9dbef2d8cf0514f1ee13498d57e035c8ad799aad5205f4a6206", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "e1ab17d01c86d9dbef2d8cf0514f1ee13498d57e035c8ad799aad5205f4a6206", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1ab17d01c86d9dbef2d8cf0514f1ee13498d57e035c8ad799aad5205f4a6206", kill_on_drop: false }`
[INFO] [stdout] e1ab17d01c86d9dbef2d8cf0514f1ee13498d57e035c8ad799aad5205f4a6206