Yelp/mrjob — pull request #934 by ymilki (2014-08-01 22:56:07+00:00)
Title: Use self.addCleanup to schedule tmpdir cleanups

After prepare_runner_for_ssh was called, the tmpdirs created were
unreliably cleaned up. Use self.addCleanup to schedule the cleanup so
that users of the function don't need to cleanup manually.