Traceback (most recent call last):


 "test/runtest.py", line 160, in testRecursiveObjects

ray.init(num_workers=0)


 "/home/ubuntu/.local/lib/python3.5/site-packages/ray-0.0.1-py3.5.egg/ray/worker.py", line 1063, in init

num_gpus=num_gpus)


 "/home/ubuntu/.local/lib/python3.5/site-packages/ray-0.0.1-py3.5.egg/ray/worker.py", line 1017, in _init

worker=global_worker, actor_id=NIL_ACTOR_ID)


 "/home/ubuntu/.local/lib/python3.5/site-packages/ray-0.0.1-py3.5.egg/ray/worker.py", line 1345, in connect

assert not worker.connected, error_message
AssertionError: Perhaps you called ray.init twice by accident?

Traceback (most recent call last):


 "/usr/local/lib/python3.5/dist-packages/graphql/execution/executor.py", line 311, in resolve_or_error

return executor.execute(resolve_fn, source, info, **args)


 "/usr/local/lib/python3.5/dist-packages/graphql/execution/executors/sync.py", line 7, in execute

return fn(*args, **kwargs)


 "/usr/local/lib/python3.5/dist-packages/graphene_django/debug/middleware.py", line 56, in resolve

promise = next(root, info, **args)


 "/usr/local/lib/python3.5/dist-packages/graphql/execution/middleware.py", line 57, in make_it_promise

return Promise.resolve(next(*a, **b))


 "/usr/local/lib/python3.5/dist-packages/graphene_django/fields.py", line 128, in connection_resolver

return on_resolve(iterable)


 "/usr/local/lib/python3.5/dist-packages/graphene_django/fields.py", line 80, in resolve_connection

iterable = cls.merge_querysets(default_queryset, iterable)


 "/usr/local/lib/python3.5/dist-packages/graphene_django/fields.py", line 70, in merge_querysets

return queryset & default_queryset


 "/usr/local/lib/python3.5/dist-packages/django/db/models/query.py", line 317, in __and__

combined.query.combine(other.query, sql.AND)


 "/usr/local/lib/python3.5/dist-packages/django/db/models/sql/query.py", line 525, in combine

"Cannot combine a unique query with a non-unique query."
AssertionError: Cannot combine a unique query with a non-unique query.
