Cleanup tool needs some improvements

Sometimes cleanup catch some strange container, or it's a race or something:
INFO - Removing container /mesos-e3cdf4a5-37ba-44bb-b0e1-13e631fd30b8-S0.ae97745a-f4f0-4c18-ac7f-dd31e864129d
INFO - Removing container /mesos-e3cdf4a5-37ba-44bb-b0e1-13e631fd30b8-S0.f8833c22-a5bb-4954-9b39-c771d4a6be85
INFO - Removing container /mesos-e3cdf4a5-37ba-44bb-b0e1-13e631fd30b8-S0.44ceeb2d-de6c-4c06-bc0b-46a8f7265f78
Exception in thread Thread-6:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 810, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/threading.py", line 763, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/lib/python2.7/multiprocessing/pool.py", line 380, in _handle_results
    task = get()
TypeError: ('__init__() takes at least 3 arguments (2 given)', <class 'docker.errors.NotFound'>, (HTTPError(u'404 Client Error: Not Found for url: /v1.21/containers/mesos-e3cdf4a5-37ba-44bb-b0e1-13e631fd30b8-S0.44ceeb2d-de6c-4c06-bc0b-46a8f7265f78?force=False&link=False&v=False',),))

And hangs.
At this point only mesos stack containers is running:
# docker ps -a | awk '{print $NF}'
NAMES
mesos_slave
chronos
marathon
mesos_master
zookeeper

If you try to push Ctrl+C you will get this:

^CProcess PoolWorker-2:
Process PoolWorker-3:
Process PoolWorker-1:
Process PoolWorker-5:
Process PoolWorker-4:
Traceback (most recent call last):
Traceback (most recent call last):
Traceback (most recent call last):
Traceback (most recent call last):
Traceback (most recent call last):
  File "/usr/lib/python2.7/multiprocessing/process.py", line 258, in _bootstrap
  File "/usr/lib/python2.7/multiprocessing/process.py", line 258, in _bootstrap
  File "/usr/lib/python2.7/multiprocessing/process.py", line 258, in _bootstrap
  File "/usr/lib/python2.7/multiprocessing/process.py", line 258, in _bootstrap
  File "/usr/lib/python2.7/multiprocessing/process.py", line 258, in _bootstrap
    self.run()
    self.run()
  File "/usr/lib/python2.7/multiprocessing/process.py", line 114, in run
    self.run()
  File "/usr/lib/python2.7/multiprocessing/process.py", line 114, in run
    self.run()
  File "/usr/lib/python2.7/multiprocessing/process.py", line 114, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/lib/python2.7/multiprocessing/process.py", line 114, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/lib/python2.7/multiprocessing/pool.py", line 102, in worker
    self._target(*self._args, **self._kwargs)
  File "/usr/lib/python2.7/multiprocessing/pool.py", line 102, in worker
    self._target(*self._args, **self._kwargs)
    self.run()
  File "/usr/lib/python2.7/multiprocessing/pool.py", line 102, in worker
  File "/usr/lib/python2.7/multiprocessing/pool.py", line 102, in worker
  File "/usr/lib/python2.7/multiprocessing/process.py", line 114, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/lib/python2.7/multiprocessing/pool.py", line 102, in worker
    task = get()
    task = get()
    task = get()
  File "/usr/lib/python2.7/multiprocessing/queues.py", line 376, in get
  File "/usr/lib/python2.7/multiprocessing/queues.py", line 374, in get
  File "/usr/lib/python2.7/multiprocessing/queues.py", line 374, in get
    task = get()
  File "/usr/lib/python2.7/multiprocessing/queues.py", line 374, in get
    task = get()
  File "/usr/lib/python2.7/multiprocessing/queues.py", line 374, in get
    racquire()
    racquire()
    return recv()
KeyboardInterrupt
    racquire()
KeyboardInterrupt
KeyboardInterrupt
KeyboardInterrupt
    racquire()
KeyboardInterrupt

And it still will be hanged.