bmizerany/roundup — pull request #14 by sttts (2012-06-27 19:34:20+00:00)
Title: Output trace of the before function if it fails

If the before function fails for some reason, you have no clue about the reason until now. This patches traces it as well. If the before function passes, the behavior is not changed, i.e. there is not a trace of it.