pyghmi-traceback

Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 346, in fire_timers
    timer()
  File "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/timer.py", line 56, in __call__
    cb(*args, **kw)
  File "/usr/local/lib/python2.7/dist-packages/eventlet/greenthread.py", line 194, in main
    result = function(*args, **kwargs)
  File "/opt/stack/ironic/ironic/conductor/task_manager.py", line 102, in wrapper
    return f(*args, **kwargs)
  File "/opt/stack/ironic/ironic/conductor/utils.py", line 54, in node_power_action
    node.save(context)
  File "/opt/stack/ironic/ironic/openstack/common/excutils.py", line 70, in __exit__
    six.reraise(self.type_, self.value, self.tb)
  File "/opt/stack/ironic/ironic/conductor/utils.py", line 47, in node_power_action
    curr_state = task.driver.power.get_power_state(task, node)
  File "/opt/stack/ironic/ironic/drivers/modules/ipminative.py", line 222, in get_power_state
    return _power_status(driver_info)
  File "/opt/stack/ironic/ironic/drivers/modules/ipminative.py", line 174, in _power_status
    password=driver_info['password'])
  File "/usr/local/lib/python2.7/dist-packages/pyghmi/ipmi/command.py", line 93, in __init__
    kg=kg)
  File "/usr/local/lib/python2.7/dist-packages/pyghmi/ipmi/private/session.py", line 219, in __init__
    Session.wait_for_rsp()
  File "/usr/local/lib/python2.7/dist-packages/pyghmi/ipmi/private/session.py", line 661, in wait_for_rsp
    cls._route_ipmiresponse(sockaddr, data)
  File "/usr/local/lib/python2.7/dist-packages/pyghmi/ipmi/private/session.py", line 723, in _route_ipmiresponse
    sockaddr=sockaddr)
  File "/usr/local/lib/python2.7/dist-packages/pyghmi/ipmi/private/session.py", line 768, in _handle_ipmi_packet
    self._handle_ipmi2_packet(data)
  File "/usr/local/lib/python2.7/dist-packages/pyghmi/ipmi/private/session.py", line 781, in _handle_ipmi2_packet
    return self._got_rakp2(data[16:])
  File "/usr/local/lib/python2.7/dist-packages/pyghmi/ipmi/private/session.py", line 900, in _got_rakp2
    self.userid
UnicodeDecodeError: 'ascii' codec can't decode byte 0x8b in position 6: ordinal not in range(128)