[INFO] fetching crate copperline 0.3.0...
[INFO] testing copperline-0.3.0 against 1.85.0 for beta-1.86-1
[INFO] extracting crate copperline 0.3.0 into /workspace/builds/worker-7-tc1/source


unable to download copperline version 0.3.0

Caused by:
    unexpected end of file