test_get_hidden_service_descriptor fails with an unexpected response code

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ERROR: test_get_hidden_service_descriptor
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Traceback (most recent call last):
  File "/home/travis/build/torproject/stem/test/require.py", line 57, in wrapped
    return func(self, *args, **kwargs)
  File "/home/travis/build/torproject/stem/test/require.py", line 57, in wrapped
    return func(self, *args, **kwargs)
  File "/home/travis/build/torproject/stem/test/require.py", line 57, in wrapped
    return func(self, *args, **kwargs)
  File "/home/travis/build/torproject/stem/test/integ/control/controller.py", line 1292, in test_get_hidden_service_descriptor
    desc = controller.get_hidden_service_descriptor('3g2upl4pq6kufc4m.onion')
  File "/home/travis/build/torproject/stem/stem/control.py", line 487, in wrapped
    return func(self, *args, **kwargs)
  File "/home/travis/build/torproject/stem/stem/control.py", line 2186, in get_hidden_service_descriptor
    raise stem.ProtocolError('HSFETCH returned unexpected response code: %s' % response.code)
ProtocolError: HSFETCH returned unexpected response code: 512
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https://travis-ci.org/torproject/stem/jobs/539138294#L1832

I think this might have been a recent tor change?