[INFO] fetching crate apidoc-attr 0.3.3...
[INFO] checking apidoc-attr-0.3.3 against master#51ff895062ba60a7cba53f57af928c3fb7b0f2f4 for pr-146167
[INFO] extracting crate apidoc-attr 0.3.3 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate apidoc-attr 0.3.3
[INFO] finished tweaking crates.io crate apidoc-attr 0.3.3
[INFO] tweaked toml for crates.io crate apidoc-attr 0.3.3 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate apidoc-attr 0.3.3 on toolchain 51ff895062ba60a7cba53f57af928c3fb7b0f2f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+51ff895062ba60a7cba53f57af928c3fb7b0f2f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+51ff895062ba60a7cba53f57af928c3fb7b0f2f4" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds


no output for 300 seconds