//tutorials:py/hydroelastic_contact_nonconvex_mesh_test failure in CI build

[BetsyMcPhail]

What happened?

//tutorials:py/hydroelastic_contact_nonconvex_mesh_test failed in the following jobs with nbclient.exceptions.DeadKernelError: Kernel died:

8/14 https://drake-jenkins.csail.mit.edu/view/Production/job/linux-noble-unprovisioned-gcc-bazel-nightly-release/59/
8/21 https://drake-jenkins.csail.mit.edu/view/Nightly%20Production/job/linux-noble-clang-bazel-nightly-everything-debug/65/
9/17 https://drake-jenkins.csail.mit.edu/job/linux-noble-clang-bazel-continuous-everything-release/281/

Version

No response

What operating system are you using?

Ubuntu 24.04

What installation option are you using?

No response

Relevant log output

[1:47:43 PM]  INFO: From Testing //tutorials:py/hydroelastic_contact_nonconvex_mesh_test:
[1:47:43 PM]  ==================== Test output for //tutorials:py/hydroelastic_contact_nonconvex_mesh_test:
[1:47:43 PM]  Running notebook as a test (non-interactive)
[1:47:43 PM]  Traceback (most recent call last):
[1:47:43 PM]    File "/media/ephemeral0/ubuntu/workspace/linux-noble-clang-bazel-continuous-everything-release/_bazel_ubuntu/5288b234115cafc3f734acf4d91652ea/sandbox/processwrapper-sandbox/19466/execroot/_main/bazel-out/k8-opt/bin/tutorials/py/hydroelastic_contact_nonconvex_mesh_test.runfiles/_main/tutorials/hydroelastic_contact_nonconvex_mesh_jupyter_py_main.py", line 11, in <module>
[1:47:43 PM]      main()
[1:47:43 PM]    File "/media/ephemeral0/ubuntu/workspace/linux-noble-clang-bazel-continuous-everything-release/_bazel_ubuntu/5288b234115cafc3f734acf4d91652ea/sandbox/processwrapper-sandbox/19466/execroot/_main/bazel-out/k8-opt/bin/tutorials/py/hydroelastic_contact_nonconvex_mesh_test.runfiles/_main/tutorials/hydroelastic_contact_nonconvex_mesh_jupyter_py_main.py", line 7, in main
[1:47:43 PM]      _jupyter_bazel_notebook_main("drake/tutorials/hydroelastic_contact_nonconvex_mesh.ipynb", sys.argv[1:])
[1:47:43 PM]    File "/media/ephemeral0/ubuntu/workspace/linux-noble-clang-bazel-continuous-everything-release/_bazel_ubuntu/5288b234115cafc3f734acf4d91652ea/sandbox/processwrapper-sandbox/19466/execroot/_main/bazel-out/k8-opt/bin/tutorials/py/hydroelastic_contact_nonconvex_mesh_test.runfiles/_main/tools/jupyter/jupyter_bazel.py", line 80, in _jupyter_bazel_notebook_main
[1:47:43 PM]      ep.preprocess(nb, resources={'metadata': {'path': notebook_dir}})
[1:47:43 PM]    File "/usr/lib/python3/dist-packages/nbconvert/preprocessors/execute.py", line 89, in preprocess
[1:47:43 PM]      self.preprocess_cell(cell, resources, index)
[1:47:43 PM]    File "/media/ephemeral0/ubuntu/workspace/linux-noble-clang-bazel-continuous-everything-release/_bazel_ubuntu/5288b234115cafc3f734acf4d91652ea/sandbox/processwrapper-sandbox/19466/execroot/_main/bazel-out/k8-opt/bin/tutorials/py/hydroelastic_contact_nonconvex_mesh_test.runfiles/_main/tools/jupyter/jupyter_bazel.py", line 34, in preprocess_cell
[1:47:43 PM]      return super().preprocess_cell(*args, **kwargs)
[1:47:43 PM]             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[1:47:43 PM]    File "/usr/lib/python3/dist-packages/nbconvert/preprocessors/execute.py", line 110, in preprocess_cell
[1:47:43 PM]      cell = self.execute_cell(cell, index, store_history=True)
[1:47:43 PM]             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[1:47:43 PM]    File "/usr/lib/python3/dist-packages/jupyter_core/utils/__init__.py", line 168, in wrapped
[1:47:43 PM]      return loop.run_until_complete(inner)
[1:47:43 PM]             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[1:47:43 PM]    File "/usr/lib/python3.12/asyncio/base_events.py", line 687, in run_until_complete
[1:47:43 PM]      return future.result()
[1:47:43 PM]             ^^^^^^^^^^^^^^^
[1:47:43 PM]    File "/usr/lib/python3/dist-packages/nbclient/client.py", line 1005, in async_execute_cell
[1:47:43 PM]      raise DeadKernelError("Kernel died") from None
[1:47:43 PM]  nbclient.exceptions.DeadKernelError: Kernel died

[rpoyner-tri]

Assigning @SeanCurtis-TRI as the owner of all things geometry, for further triage.

[SeanCurtis-TRI]

This doesn't look like a geometry thing. It's a CI thing. It should probably get the typical assignment of all of the "things buildcops have noted" issues. Such issues tend to be assigned to one of the kitware crew.

Or do we have some basis for believing there's something about the geometry that's causing jupyter to intermittently fail?