Another stack trace

[John Wiegley]

Every 2-4 hours after I run Offlineimap (which polls every 15 minutes, in
addition to using IDLE on my INBOX), before it crashes and stops polling
altogether.  I usually only notice because I haven't seen a new e-mail in a
while.  Here's what I'm seeing this time:

--8<---------------cut here---------------start------------->8---
Syncing INBOX: IMAP -> MappedIMAP
Copy message 55228 IMAP[INBOX] -> MappedIMAP[INBOX]
Exception in thread Thread-1267:
Traceback (most recent call last):
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py", line 552, in __bootstrap_inner
    self.run()
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py", line 505, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/offlineimap/imapserver.py", line 551, in idle
    imapobj.noop()
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/offlineimap/imaplib2.py", line 920, in noop
    return self._simple_command('NOOP', **kw)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/offlineimap/imaplib2.py", line 1594, in _simple_command
    return self._command_complete(self._command(name, *args), kw)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/offlineimap/imaplib2.py", line 1292, in _command
    raise self.abort('connection closed')
abort: connection closed
--8<---------------cut here---------------end--------------->8---

Thanks, John