[INFO] fetching crate cargo-rustc-cfg 0.2.0...
[INFO] testing cargo-rustc-cfg-0.2.0 against master#b03b3a7ec92682be2917540b679478d41c95a30c for pr-137122-1
[INFO] extracting crate cargo-rustc-cfg 0.2.0 into /workspace/builds/worker-5-tc1/source


unable to download cargo-rustc-cfg version 0.2.0

Caused by:
    No space left on device (os error 28)