[INFO] fetching crate optimal-core 0.0.0...
[INFO] checking optimal-core-0.0.0 against master#249cb84316401daf040832cdbb8a45e0f5ab6af8 for pr-138438
[INFO] extracting crate optimal-core 0.0.0 into /workspace/builds/worker-4-tc1/source


unable to download optimal-core version 0.0.0

Caused by:
    0: failed to unpack `optimal-core-0.0.0/.cargo_vcs_info.json` into `/workspace/builds/worker-4-tc1/source/.cargo_vcs_info.json`
    1: No space left on device (os error 28)