test_move_files_nesting results(?) in "Fatal Python error: Segmentation fault" once in a while

[yarikoptic]

Initially observed in

• https://github.com/OpenNeuroOrg/openneuro/pull/3141 but looking through the history found prior cases, e.g. https://github.com/OpenNeuroOrg/openneuro/actions/runs/10728900849/job/29754439687 which is after merging
• #3140

============================= test session starts ==============================
platform linux -- Python 3.11.9, pytest-8.3.2, pluggy-1.5.0
rootdir: /home/runner/work/openneuro/openneuro/services/datalad
configfile: pytest.ini
plugins: asyncio-0.24.0, cov-5.0.0, xdist-3.6.1, anyio-4.4.0
asyncio: mode=Mode.AUTO, default_loop_scope=None
created: 4/4 workers
4 workers [96 items]

........................................................................ [ 75%]
Fatal Python error: Segmentation fault
...
=========================== short test summary info ============================
FAILED tests/test_upload.py::test_move_files_nesting