[INFO] fetching crate core-allocator 0.2.2...
[INFO] checking core-allocator-0.2.2 against master#9bfa31f632912180dc742809bcc51a97f2d7079d for pr-140151
[INFO] extracting crate core-allocator 0.2.2 into /workspace/builds/worker-1-tc1/source


unable to download core-allocator version 0.2.2

Caused by:
    unexpected end of file