xfail test because Emscripten FS

tests/v2/test_storage.py

@@ -939,6 +939,7 @@ def create_store(self, normalize_keys=False, dimension_separator=".", **kwargs):
         )
         return store
 
+    @pytest.mark.xfail(reason="Emscripten filesystem handles umasks differently")
     def test_filesystem_path(self):
         # test behaviour with path that does not exist
         path = "data/store"