[INFO] fetching crate rtime 0.6.1...
[INFO] checking rtime-0.6.1 against master#9050733395f7c10560d49f549e022f411fa28cea for pr-146972
[INFO] extracting crate rtime 0.6.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate rtime 0.6.1
[INFO] finished tweaking crates.io crate rtime 0.6.1
[INFO] tweaked toml for crates.io crate rtime 0.6.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rtime 0.6.1 on toolchain 9050733395f7c10560d49f549e022f411fa28cea
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9050733395f7c10560d49f549e022f411fa28cea" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9050733395f7c10560d49f549e022f411fa28cea" "generate-lockfile" "--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


no output for 300 seconds