Enable Backtrace for `cargo test`
Enable Backtrace for `cargo test`

* sets env var `$RUST_BACKTRACE=1`
* matches references to local files in the backtrace

NOTE: This could be further improved by making this configurable. I'll leave that to someone more experienced with atom packages. ;-)
noseglid/atom-build-cargo,AtomBuild/atom-build-cargo