object has no attribute 'metadata'

[catskul]

Seemingly randomly (reloads on the same request sometimes produce) I get a 500 from the django dev webserver (running tip of master '6b08e97b6af8114d1ad82fc53a9cdf58168a278e'). It appears to be statefull. After the 500 happens all subsequent (identical) requests fail in the same way.

Restarting the server typically works for at least one request.

Exception:

Environment:

Request Method: GET
Request URL: http://localhost:8000/api/v1/attorneys/445ed126-095f-4093-bb11-5128ae84f060/

Django Version: 1.7.7
Python Version: 2.7.8

...

Traceback:
File "/home/.../env/local/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  111.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/.../env/local/lib/python2.7/site-packages/django/views/decorators/csrf.py" in wrapped_view
  57.         return view_func(*args, **kwargs)
File "/home/.../env/src/djangorestframework/rest_framework/viewsets.py" in view
  79.                 handler = getattr(self, action)

Exception Type: AttributeError at /api/v1/attorneys/445ed126-095f-4093-bb11-5128ae84f060/
Exception Value: 'AttorneyViewSet' object has no attribute 'metadata'

[catskul]

related to #3115