Ooniprobe doesn't run legacy tests, NameError: name 'inputs' is not defined

After the switch to using twisted.trial as the basis for the API, ooniprobe's class for running legacy tests gives errors:

isis@wintermute:~/code/torproject/ooni-probe/ooni$ ../bin/ooniprobe plugins/captiveportal.py

WARNING: No route found for IPv6 destination :: (no default route?)
Traceback (most recent call last):
  File "../bin/ooniprobe", line 23, in <module>
    run()
  File "/home/isis/code/torproject/ooni-probe/ooni/oonicli.py", line 99, in run
    classes = runner.findTestClassesFromConfig(config)
  File "/home/isis/code/torproject/ooni-probe/ooni/runner.py", line 110, in findTestClassesFromConfig
    classes.append(adaptLegacyTest(val, config))
  File "/home/isis/code/torproject/ooni-probe/ooni/runner.py", line 57, in adaptLegacyTest
    class LegacyOONITest(nettest.TestCase):
  File "/home/isis/code/torproject/ooni-probe/ooni/runner.py", line 76, in LegacyOONITest
    inputs = inputs
NameError: name 'inputs' is not defined

isis@wintermute:~/code/torproject/ooni-probe/ooni$ ../bin/ooniprobe plugins/bridget.py -b assets/bridgelist.txt

WARNING: No route found for IPv6 destination :: (no default route?)
Traceback (most recent call last):
  File "../bin/ooniprobe", line 23, in <module>
    run()
  File "/home/isis/code/torproject/ooni-probe/ooni/oonicli.py", line 99, in run
    classes = runner.findTestClassesFromConfig(config)
  File "/home/isis/code/torproject/ooni-probe/ooni/runner.py", line 110, in findTestClassesFromConfig
    classes.append(adaptLegacyTest(val, config))
  File "/home/isis/code/torproject/ooni-probe/ooni/runner.py", line 57, in adaptLegacyTest
    class LegacyOONITest(nettest.TestCase):
  File "/home/isis/code/torproject/ooni-probe/ooni/runner.py", line 76, in LegacyOONITest
    inputs = inputs
NameError: name 'inputs' is not defined