I don't care for the `Rakefile` approach, because:

* It creates a bunch of noise as it starts the task before it runs the main tests. It makes me think my tests are running when they're not.
* It means loading the Rails environment twice instead of once. For a test suite that runs in a few seconds once loaded, this is significant overhead to run a 300ms lint.

I think the best solution right now is to take out the lint entirely until we find a way that doesn't adversely affect the tests.