add hook to catch StashKey errors on teardown

Author: erindru

tests/core/engine_adapter/integration/conftest.py

@@ -27,6 +27,23 @@
 logger = logging.getLogger(__name__)
 
 
+@pytest.hookimpl(tryfirst=True, wrapper=True)
+def pytest_fixture_post_finalizer(fixturedef: pytest.FixtureDef, request: pytest.FixtureRequest):
+    try:
+        yield
+    except KeyError as e:
+        # The tmp_path fixture frequently throws errors like:
+        # - KeyError: <_pytest.stash.StashKey object at 0x79ba385fe1a0>
+        # in its teardown. This causes pytest to mark the test as failed even though we have zero control over this behaviour.
+        # So we log/swallow that particular error here rather than raising it
+        if fixturedef.argname == "tmp_path" and "_pytest.stash.StashKey" in repr(e):
+            request.node.add_report_section(
+                "teardown", "stderr", f"Ignored tmp_path teardown error: {e}"
+            )
+            return
+        raise
+
+
 @pytest.fixture
 def config(tmp_path: pathlib.Path) -> Config:
     return load_config_from_paths(