[INFO] fetching crate alien-worker-protocol 3.3.28...
[INFO] checking alien-worker-protocol-3.3.28 against 8d1a76430406c877b35d0b627e7f796dcf0dfeca+rustflags=-Aunfulfilled-lint-expectations for pr-163637
[INFO] extracting crate alien-worker-protocol 3.3.28 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate alien-worker-protocol 3.3.28
[INFO] finished tweaking crates.io crate alien-worker-protocol 3.3.28
[INFO] tweaked toml for crates.io crate alien-worker-protocol 3.3.28 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate alien-worker-protocol 3.3.28 on toolchain 8d1a76430406c877b35d0b627e7f796dcf0dfeca
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d1a76430406c877b35d0b627e7f796dcf0dfeca" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate alien-worker-protocol 3.3.28 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d1a76430406c877b35d0b627e7f796dcf0dfeca" "fetch" "--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