Autopilot tests fail to run in Trusty

[Víctor R. Ruiz]

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ERROR: unittest.loader.ModuleImportFailure.cordova_ubuntu.tests.test_mobilespec
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Traceback (most recent call last):
ImportError: Failed to import test module: cordova_ubuntu.tests.test_mobilespec
Traceback (most recent call last):
  File "/usr/lib/python2.7/unittest/loader.py", line 254, in _find_tests
    module = self._get_module_from_name(name)
  File "/usr/lib/python2.7/unittest/loader.py", line 232, in _get_module_from_name
    __import__(name)
  File "/usr/lib/python2.7/dist-packages/cordova_ubuntu/tests/__init__.py", line 22, in <module>
    class CordovaUbuntuTestCase(AutopilotTestCase):
  File "/usr/lib/python2.7/dist-packages/cordova_ubuntu/tests/__init__.py", line 24, in CordovaUbuntuTestCase
    pointer = Pointer(Touch.create())
  File "/usr/lib/python2.7/dist-packages/autopilot/input/__init__.py", line 418, in create
    return _pick_backend(backends, preferred_backend)
  File "/usr/lib/python2.7/dist-packages/autopilot/utilities.py", line 56, in _pick_backend
    "Unable to instantiate any backends\n%s" % '\n'.join(failure_reasons))
RuntimeError: Unable to instantiate any backends
UInput: UInputError('"/dev/autopilot-uinput" cannot be opened for writing',)

[Víctor R. Ruiz (vrruiz)]

Autopilot Source Version: 1.3.1 Autopilot Package Version:
1.3.1+13.10.20131003.1-0ubuntu1

[Daniel Holbach (dholbach)]

The linked branch is ready, but needs bug 1270838 to be resolved before.