celery/celery — pull request #927 by adepue (2012-08-21 00:41:27+00:00)
Title: Properly pass traceback object to handlers instead of str representation

To allow failure handlers to access the Traceback info properly, they need the full Traceback object instead of the string representation.

This should fix the following issue:
https://github.com/celery/celery/issues/905