message: change to assertRaiseRegex
diff: @@ -1553,7 +1553,7 @@ class SequenceNumericColumnTest(test.TestCase, parameterized.TestCase):
  self.assertEqual(column.shape, (2,))
  self.assertEqual(column.default_value, 3)
  self.assertEqual(column.normalizer_fn(3), 45)
  - with self.assertRaises(ValueError):
  + with self.assertRaisesRegex(ValueError, 'Instance: 0 is not a FeatureColumn'):
  serialization.serialize_feature_column(int())
  def test_parents(self):
  