Trial should indicate if the test failed because of log.err

[wadey]

I spent a lot of time today trying to track down what was causing one of my test cases to fail. I found out it was because somewhere along the line, log.err was being called, but the error was being handled later.

It would be nice if the output that trial gives would mention that the test case failed because log.err was called, and not because the Failure bubbled up in a different way.

[wulczer]

+1, I had the same problem, the message from trial is not clear at all about what happened

[exarkun]

#4910 was a duplicate of this.