URLError trying to connect to bugtracker

As seen on OOPS-1866CCW1035 and OOPS-1866CCW1144:

    Traceback (most recent call last):
  Module lp.bugs.scripts.checkwatches.core, line 245, in updateBugTracker
    self._updateBugTracker(bug_tracker, batch_size)
  Module lp.bugs.scripts.checkwatches.core, line 406, in _updateBugTracker
    bug_tracker, bug_watches_to_update)
  Module lp.bugs.scripts.checkwatches.core, line 334, in _getExternalBugTrackersAndWatches
    remotesystem_to_use = remotesystem.getExternalBugTrackerToUse()
  Module lp.bugs.externalbugtracker.bugzilla, line 159, in getExternalBugTrackerToUse
    if self._remoteSystemHasPluginAPI():
  Module lp.bugs.externalbugtracker.isolation, line 63, in wrapper
    return func(*args, **kwargs)
  Module lp.bugs.externalbugtracker.bugzilla, line 129, in _remoteSystemHasPluginAPI
    proxy.Launchpad.plugin_version()
  Module xmlrpclib, line 1199, in __call__
    return self.__send(self.__name, args)
  Module xmlrpclib, line 1489, in __request
    verbose=self.__verbose
  Module lp.bugs.externalbugtracker.xmlrpc, line 108, in request
    response = self._parse_response(self.opener.open(request), None)
  Module urllib2, line 391, in open
    response = self._open(req, data)
  Module urllib2, line 409, in _open
    '_open', req)
  Module urllib2, line 369, in _call_chain
    result = func(*args)
  Module urllib2, line 1169, in https_open
    return self.do_open(httplib.HTTPSConnection, req)
  Module urllib2, line 1136, in do_open
    raise URLError(err)
URLError: <urlopen error [Errno -2] Name or service not known>

and

URLError: <urlopen error [Errno 110] Connection timed out>