[INFO] fetching crate arcu 0.1.2...
[INFO] checking arcu-0.1.2 against master#89a99936d9e76a50e8df622e7242190841fd871b for pr-156160
[INFO] extracting crate arcu 0.1.2 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate arcu 0.1.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate arcu 0.1.2
[INFO] tweaked toml for crates.io crate arcu 0.1.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate arcu 0.1.2 on toolchain 89a99936d9e76a50e8df622e7242190841fd871b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+89a99936d9e76a50e8df622e7242190841fd871b" "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" "+89a99936d9e76a50e8df622e7242190841fd871b" "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


overridden task result to prepare-fail:timeout

Caused by:
    0: uncategorized prepare error
    1: no output for 300 seconds