[INFO] fetching crate agent-client-protocol-cookbook 2.0.0...
[INFO] checking agent-client-protocol-cookbook-2.0.0 against 22950ab9e29e11620a10905f027f141ea126966e for pr-160581
[INFO] extracting crate agent-client-protocol-cookbook 2.0.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate agent-client-protocol-cookbook 2.0.0
[INFO] finished tweaking crates.io crate agent-client-protocol-cookbook 2.0.0
[INFO] tweaked toml for crates.io crate agent-client-protocol-cookbook 2.0.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate agent-client-protocol-cookbook 2.0.0 on toolchain 22950ab9e29e11620a10905f027f141ea126966e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22950ab9e29e11620a10905f027f141ea126966e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate agent-client-protocol-cookbook 2.0.0 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" "+22950ab9e29e11620a10905f027f141ea126966e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `lints.rust.let-underscore` is deprecated in favor of `lints.rust.let_underscore` and will not work in a future edition
[INFO] [stderr] warning: `agent-client-protocol-cookbook` (manifest) generated 1 warning
[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