[INFO] crate amethyst_test 0.6.0 is already in cache
[ERROR] this task or one of its parent failed!
[ERROR] unable to download amethyst_test version 0.6.0
[ERROR] caused by: failed to unpack `amethyst_test-0.6.0/src/amethyst_application.rs` into `/workspace/builds/worker-4/source/src/amethyst_application.rs`
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.