self = <swh.core.api.tests.test_serializers.Serializers testMethod=test_encode_native_datetime>

    def test_encode_native_datetime(self):
        dt = datetime.datetime(2015, 1, 1, 12, 4, 42, 231455)
>       with self.assertRaises(ValueError, matches="naive datetime"):
E       TypeError: 'matches' is an invalid keyword argument for this function

swh/core/api/tests/test_serializers.py:181: TypeError