Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/checkbox_gtk/gtk_interface.py", line 479, in <lambda>
    lambda w, t=test, r=runner: self._run_test(t, r))
  File "/usr/lib/python2.7/dist-packages/checkbox_gtk/gtk_interface.py", line 450, in _run_test
    (status, data, duration) = runner(test)
  File "/usr/share/checkbox/plugins/manual_test.py", line 37, in runner
    return (temp["status"], temp["data"], temp["duration"])
KeyError: 'duration'