std::unique_ptr<QueueRunner> qr;
  TF_EXPECT_OK(QueueRunner::New(queue_runner_def, &qr));
  TF_EXPECT_OK(qr->Start(session.get()));
  EXPECT_EQ(qr->Join().code(), Code::NOT_FOUND);
}

GraphDef BuildDoubleQueueGraph() {
  Scope root = Scope::NewRootScope();
  auto q0 = FIFOQueue(root.WithOpName(kQueueName0), {DataType::DT_INT32});
  auto ten = Const(root, 10);