Traceback (most recent call last):
File "/home/ken/work/phablet/settings/15.10/call_waiting_fixes/tests/autopilot/ubuntu_system_settings/tests/__init__.py", line 401, in setUp
super(PhoneOfonoBaseTestCase, self).setUp()
File "/home/ken/work/phablet/settings/15.10/call_waiting_fixes/tests/autopilot/ubuntu_system_settings/tests/__init__.py", line 359, in setUp
super(UbuntuSystemSettingsOfonoTestCase, self).setUp()
File "/home/ken/work/phablet/settings/15.10/call_waiting_fixes/tests/autopilot/ubuntu_system_settings/tests/__init__.py", line 80, in setUp
self.system_settings = self.launch(panel)
File "/home/ken/work/phablet/settings/15.10/call_waiting_fixes/tests/autopilot/ubuntu_system_settings/tests/__init__.py", line 115, in launch
capture_output=True)
File "/usr/lib/python3/dist-packages/autopilot/testcase.py", line 279, in launch_test_application
return launcher.launch(application, arguments, **launch_args)
File "/usr/lib/python3/dist-packages/autopilot/application/_launcher.py", line 384, in launch
pid=process.pid
File "/usr/lib/python3/dist-packages/autopilot/introspection/_search.py", line 183, in get_proxy_object_for_existing_process
emulator_base
File "/usr/lib/python3/dist-packages/autopilot/introspection/_search.py", line 425, in _make_proxy_object
return proxy_class(cls_state, path, backends.Backend(dbus_address))
File "/usr/lib/python3/dist-packages/ubuntuuitoolkit/_custom_proxy_objects/_common.py", line 77, in __init__
self.pointing_device = get_pointing_device()
File "/usr/lib/python3/dist-packages/ubuntuuitoolkit/_custom_proxy_objects/_common.py", line 49, in get_pointing_device
return input.Pointer(device=input_device_class.create())
File "/usr/lib/python3/dist-packages/autopilot/input/__init__.py", line 298, in create
return _pick_backend(backends, preferred_backend)
File "/usr/lib/python3/dist-packages/autopilot/utilities.py", line 62, in _pick_backend
"Unable to instantiate any backends\n%s" % '\n'.join(failure_reasons))
RuntimeError: Unable to instantiate any backends
X11: DisplayConnectionError(':0', b'Invalid MIT-MAGIC-COOKIE-1 key')