[INFO] fetching crate livediff 3.2.0...
[INFO] checking livediff-3.2.0 against c42ac5fd59628ea7e2f52af5944c2aaac3f0e7f6 for pr-161319
[INFO] extracting crate livediff 3.2.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate livediff 3.2.0
[INFO] finished tweaking crates.io crate livediff 3.2.0
[INFO] tweaked toml for crates.io crate livediff 3.2.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate livediff 3.2.0 on toolchain c42ac5fd59628ea7e2f52af5944c2aaac3f0e7f6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c42ac5fd59628ea7e2f52af5944c2aaac3f0e7f6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate livediff 3.2.0 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" "+c42ac5fd59628ea7e2f52af5944c2aaac3f0e7f6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `lints.rust.future-incompatible` is deprecated in favor of `lints.rust.future_incompatible` and will not work in a future edition
[INFO] [stderr] warning: `livediff` (manifest) generated 1 warning
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[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