[INFO] fetching crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a...
[INFO] checking compiler-builtins-snapshot-0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a against master#5dfe648b45659db8dd0a673a806bba3df84aa3af for pr-134273
[INFO] extracting crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a on toolchain 5dfe648b45659db8dd0a673a806bba3df84aa3af
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5dfe648b45659db8dd0a673a806bba3df84aa3af" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a
[INFO] finished tweaking crates.io crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a
[INFO] tweaked toml for crates.io crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5dfe648b45659db8dd0a673a806bba3df84aa3af" "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


NoOutputFor(300)