0.7194, -0.2918, -0.1846,  1.0000,  1.0000],
             [ 0.2773,  0.8793, -0.5183, -0.6447,  1.0000,  1.0000],
             [ 1.8009,  1.8468, -0.9832, -1.5272,  1.0000,  1.0000],
             [ 1.0000,  1.0000,  1.0000,  1.0000,  1.0000,  1.0000]]])
    >>> pt_small = torch.nested.to_padded_tensor(nt, 2.0, (2, 2, 2))
    RuntimeError: Value in output_size is less than NestedTensor padded size. Truncation is not supported.

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