As of version 1.560, polling my private mercurial repository hosted by BitBucket no longer works. Before version 1.560 this worked as expected. Other than Jenkins itself, there were no other changes to the system. The poll configuration looks like:

H/5 * * * *

The "poll log" says the following:

Started on Apr 24, 2014 8:08:05 AM
We need to schedule a new build to get a workspace, but deferring 1,149ms in the hope that one will become available soon (all_suitable_nodes_are_offline)
Done. Took 1 ms
No changes

The build does have a valid workspace. Doing a manual build to "get a workspace" does work but does not resolve the polling issue.

This is a single Jenkins instance without any slaves.

I'd be happy to provide any other logs, information, or tests required to resolve this issue.