Fix broken travis build. rust formatter was broken

[olexiyb]

Fix #109

[hardliner66]

If the format of the file was the problem, there needs to be some feedback to the user which tells them they need to fix their formatting.

Just formatting the code isn't the whole solution for this issue. Why doesn't github show that travis run and failed?

[olexiyb]

@leenozara please check the Travis Webhook in Settings, I suspect something is broken here.

[olexiyb]

This may help
https://stackoverflow.com/questions/19810386/showing-travis-build-status-in-github-repo

[leenozara]

@olexiyb This was merged but pre-commit seems to still be failing.