Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 1007, in _simulate
    trans.unauthenticated = self.__simulate(trans)
  File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 1122, in __simulate
    unauthenticated = self._get_unauthenticated()
  File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 347, in _get_unauthenticated
    for pkg in self._iterate_packages():
  File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 1308, in _iterate_packages
    for enum, pkg in enumerate(self._cache):
  File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 198, in __iter__
    yield self[pkgname]
  File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 186, in __getitem__
    raise KeyError('The cache has no package named %r' % key)
KeyError: "The cache has no package named 'nova-ajax-console-proxy'"