As seen in https://github.com/pytest-dev/pytest/actions/runs/13810374238 we're getting failing runs from attrs==25.2 in testing/test_assertion.py TestAssert_reprcompare_attrsclass

I bisected it to python-attrs/attrs#1407 - but am unfamiliar with both attr and the parts of pytest interacting with it so am leaving further exploration for somebody else.