If there is a problem fetching new changes from a remote repo, this doesn't fail the build. Example:

ERROR: Permission to simplegeo/python-geojson denied to geebus.
fatal: The remote end hung up unexpectedly
ERROR: Problem fetching from origin / origin - could be unavailable. Continuing anyway

Despite this, the build proceeds and is considered successful. This is extremely misleading, as it contains no new changes from the only repository it is configured to pull from. While I believe this behavior is nonsensical in the majority of cases, I think that one of two things should be changed:

1. If every remote repo fails to update, fail.
OR
2. Add an option to fail if any remote repo fails to update.