Overview

Forking from#6176:

It's a bit funky with --fix from what I've noticed.
The fix re-runs won't have proper type information so rules like the no-unsafe-* rules will report false errors on fixed files that won't show up on a non-fixing run.

We need to figure out a better solution for the fix case before we can really roll this out to everyone I think, or else we'll create a really flaky and confusing experience.

@bradzacher - do you have a repro available? I can work on one if not.

I'd consider this a bug we should tackle. Perhaps we can use the same builder/watch programs that we do for IDEs?