09:43:42 ERROR    yapsy                     Unable to import plugin: /usr/local/lib/python2.7/dist-packages/errbot/backends/irc
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/yapsy/PluginManager.py", line 488, in loadPlugins
    candidate_module = imp.load_module(plugin_module_name,plugin_file,candidate_filepath+".py",("py","r",imp.PY_SOURCE))
  File "/usr/local/lib/python2.7/dist-packages/errbot/backends/irc.py", line 62, in <module>
    from irc.bot import SingleServerIRCBot
  File "/usr/local/lib/python2.7/dist-packages/irc/bot.py", line 22, in <module>
    from .dict import IRCDict
  File "/usr/local/lib/python2.7/dist-packages/irc/dict.py", line 4, in <module>
    from jaraco.collections import KeyTransformingDict
  File "/usr/local/lib/python2.7/dist-packages/jaraco/collections.py", line 755, in <module>
    class InstrumentedDict(six.moves.UserDict):
AttributeError: '_MovedItems' object has no attribute 'UserDict'
09:43:42 ERROR    errbot.main               Unable to load or configure the backend.