{"reward": {"device": "cpu", "shape": [50, 1], "dtype": "torch.float32"}, "done": {"device": "cpu", "shape": [50, 1], "dtype": "torch.bool"}, "success": {"device": "cpu", "shape": [50, 1], "dtype": "torch.bool"}, "shape": [50], "device": "cpu", "_type": "<class 'tensordict._td.TensorDict'>"}