[INFO] fetching crate object-rainbow-trie 0.0.0-a.19...
[INFO] checking object-rainbow-trie-0.0.0-a.19 against 65dd30fb9e882a7e8f0be10caca62936db2a98b8 for pr-133502-28
[INFO] extracting crate object-rainbow-trie 0.0.0-a.19 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate object-rainbow-trie 0.0.0-a.19
[INFO] finished tweaking crates.io crate object-rainbow-trie 0.0.0-a.19
[INFO] tweaked toml for crates.io crate object-rainbow-trie 0.0.0-a.19 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate object-rainbow-trie 0.0.0-a.19 on toolchain 65dd30fb9e882a7e8f0be10caca62936db2a98b8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+65dd30fb9e882a7e8f0be10caca62936db2a98b8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate object-rainbow-trie 0.0.0-a.19 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" "+65dd30fb9e882a7e8f0be10caca62936db2a98b8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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