Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/butterfly/util/decorator.py", line 87, in async_function
    func(*args, **kwargs)
  File "/usr/lib/telepathy/telepathy-butterfly", line 62, in quit
    manager.quit()
  File "/usr/lib/python2.6/dist-packages/butterfly/connection_manager.py", line 85, in quit
    for connection in self._connections:
RuntimeError: Set changed size during iteration