Change skips to expected failures

Lib/test/list_tests.py

@@ -370,6 +370,8 @@ class CommonTest(seq_tests.CommonTest):
             # verify that original order and values are retained.
             self.assertIs(x, y)
 
+    # TODO: RUSTPYTHON
+    @unittest.expectedFailure
     def test_index(self):
         super().test_index()
         a = self.type2test([-2, -1, 0, 0, 1, 2])

Lib/test/seq_tests.py

@@ -365,7 +365,8 @@ class CommonTest(unittest.TestCase):
 
         self.assertRaises(BadExc, a.count, BadCmp())
 
-    @unittest.skip("TODO: RUSTPYTHON, TypeError: Expected at most 2 arguments (3 given)")
+    # TODO: RUSTPYTHON
+    @unittest.expectedFailure
     def test_index(self):
         u = self.type2test([0, 1])
         self.assertEqual(u.index(0), 0)