[-] Caught error: Key length is > 250
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/nova/api/openstack/__init__.py", line 119, in __call__
    return req.get_response(self.application)
  File "/usr/lib/python2.7/dist-packages/webob/request.py", line 1296, in send
    application, catch_exc_info=False)
  File "/usr/lib/python2.7/dist-packages/webob/request.py", line 1260, in call_application
    app_iter = application(self.environ, start_response)
  File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 144, in __call__
    return resp(environ, start_response)
  File "/usr/lib/python2.7/dist-packages/keystoneclient/middleware/auth_token.py", line 535, in __call__
    token_info = self._validate_user_token(user_token)
  File "/usr/lib/python2.7/dist-packages/keystoneclient/middleware/auth_token.py", line 791, in _validate_user_token
    self._cache_store_invalid(user_token)
  File "/usr/lib/python2.7/dist-packages/keystoneclient/middleware/auth_token.py", line 1044, in _cache_store_invalid
    self._cache_store(token, 'invalid')
  File "/usr/lib/python2.7/dist-packages/keystoneclient/middleware/auth_token.py", line 1007, in _cache_store
    time=self.token_cache_time)
  File "/usr/lib/python2.7/dist-packages/memcache.py", line 584, in set
    return self._set("set", key, val, time, min_compress_len)
  File "/usr/lib/python2.7/dist-packages/memcache.py", line 804, in _set
    self.check_key(key)
  File "/usr/lib/python2.7/dist-packages/memcache.py", line 1059, in check_key
    % self.server_max_key_length)
MemcachedKeyLengthError: Key length is > 250