Traceback (most recent call last):
  File "scratch.py", line 8, in <module>
    print(torch.cat([x, y]))
          ^^^^^^^^^^^^^^^^^
RuntimeError: Check failed: xla::ShapeUtil::CompatibleIgnoringElementType(shapes.back(), tensor_shape): f32[1]{0} vs. f32[4]{0} (at torch_xla/csrc/tensor_methods.cpp:1185)

Exception raised from operator& at torch_xla/csrc/runtime/tf_logging.cpp:26 (most recent call first):

Traceback (most recent call last):
  File "scratch.py", line 8, in <module>
    print(torch.cat([x, y]))
          ^^^^^^^^^^^^^^^^^
RuntimeError: cat(): cannot concatenate tensors of shape f32[1,1] with f32[9,4] at dimension 0. Expected shapes to be equal (except at dimension 0) or that either of them was a 1D empty tensor of size (0,).

Status Propagation Trace:
    From: cat at torch_xla/csrc/tensor_methods.cpp:1190 (error: cat(): cannot concatenate tensors of shape f32[1,1] with f32[9,4] at dimension 0. Expected shapes to be equal (except at dimension 0) or that either of them was a 1D empty tensor of size (0,).)

Exception raised from MaybeThrow at torch_xla/csrc/status.cpp:128 (most recent call first):