Traceback (most recent call last):
      File "nova/tests/unit/test_quota.py", line 109, in test_too_many_cores
        image_href=image_uuid)
      File "nova/hooks.py", line 154, in inner
        rv = f(*args, **kwargs)
      File "nova/compute/api.py", line 1668, in create
        check_server_group_quota=check_server_group_quota)
      File "nova/compute/api.py", line 1240, in _create_instance
        key_pair)
      File "nova/compute/api.py", line 998, in _provision_instances
        context, instance_type, min_count, max_count)
      File "nova/compute/api.py", line 360, in _check_num_instances_quota
        project_id=project_id, user_id=user_id)
      File "/home/dan/nova/.tox/py27/lib/python2.7/site-packages/oslo_versionedobjects/base.py", line 226, in wrapper
        return fn(self, *args, **kwargs)
      File "nova/objects/quotas.py", line 277, in reserve
        **deltas)
      File "nova/quota.py", line 1449, in reserve
        user_id=user_id)
      File "nova/quota.py", line 555, in reserve
        _valid_method_call_check_resources(deltas, 'reserve')
      File "nova/quota.py", line 1719, in _valid_method_call_check_resources
        _valid_method_call_check_resource(name, method)
      File "nova/quota.py", line 1712, in _valid_method_call_check_resource
        raise exception.InvalidQuotaMethodUsage(method=method, res=name)
    nova.exception.InvalidQuotaMethodUsage: Wrong quota method reserve used on resource instances