[INFO] fetching crate libmat 0.2.0...
[ERROR] this task or one of its parent failed!
[ERROR] unable to download libmat version 0.2.0
[ERROR] caused by: failed to unpack `libmat-0.2.0/.gitignore` into `/workspace/builds/worker-23/source/.gitignore`
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.