[INFO] fetching crate amfnbatch 0.3.5...
[INFO] checking amfnbatch-0.3.5 against master#3f6250a7bb79e600d9036bbc7c8f65af43933643 for pr-147859
[INFO] extracting crate amfnbatch 0.3.5 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate amfnbatch 0.3.5
[INFO] finished tweaking crates.io crate amfnbatch 0.3.5
[INFO] tweaked toml for crates.io crate amfnbatch 0.3.5 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate amfnbatch 0.3.5 on toolchain 3f6250a7bb79e600d9036bbc7c8f65af43933643
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3f6250a7bb79e600d9036bbc7c8f65af43933643" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate amfnbatch 0.3.5 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" "+3f6250a7bb79e600d9036bbc7c8f65af43933643" "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


no output for 300 seconds