IOError during sync-bugtasks, filename too long

During sync-bugtasks on the Terminator project I received the following traceback:

New <BugTask 330295/terminator>
Traceback (most recent call last):
  File "./sync-bugtasks", line 15, in <module>
    convergence.synchronize_bugtasks(sys.argv[1])
  File "/home/cmsj/code/scratch/everyday/bugstats/convergence.py", line 118, in synchronize_bugtasks
    for task in tasks:
  File "/usr/lib/pymodules/python2.6/lazr/restfulclient/resource.py", line 690, in __iter__
    unicode(self._root._browser.get(URI(next_link))))
  File "/usr/lib/pymodules/python2.6/lazr/restfulclient/_browser.py", line 279, in get
    response, content = self._request(url, extra_headers=headers)
  File "/usr/lib/pymodules/python2.6/lazr/restfulclient/_browser.py", line 255, in _request
    str(url), method=method, body=data, headers=headers)
  File "/usr/lib/pymodules/python2.6/httplib2/__init__.py", line 1129, in request
    (response, content) = self._request(conn, authority, uri, request_uri, method, body, headers, redirections, cachekey)
  File "/usr/lib/pymodules/python2.6/lazr/restfulclient/_browser.py", line 154, in _request
    redirections, cachekey)
  File "/usr/lib/pymodules/python2.6/httplib2/__init__.py", line 954, in _request
    _updateCache(headers, response, content, self.cache, cachekey)
  File "/usr/lib/pymodules/python2.6/httplib2/__init__.py", line 396, in _updateCache
    cache.set(cachekey, text)
  File "/usr/lib/pymodules/python2.6/httplib2/__init__.py", line 664, in set
    f = file(cacheFullPath, "wb")
IOError: [Errno 36] File name too long: '/home/cmsj/.launchpadlib/cache/api.edge.launchpad.net/cache/api.edge.launchpad.net,1.0,terminator,modified_since=null&status=%5B%22New%22%2C+%22Incomplete%22%2C+%22Invalid%22%2C,33e983adfdfad57c4dbea85ac2a8e0a1'