[INFO] fetching crate serror 0.5.4...
[INFO] testing serror-0.5.4 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210
[INFO] extracting crate serror 0.5.4 into /workspace/builds/worker-5-tc1/source


overridden task result to prepare-fail:unknown

Caused by:
    0: uncategorized prepare error
    1: unable to download serror version 0.5.4
    2: failed to unpack `serror-0.5.4/Cargo.lock` into `/workspace/builds/worker-5-tc1/source/Cargo.lock`
    3: unexpected end of file