When this test from Lib/test/test_profile.py fail, it just prints a message and doesn't fail the testsuite:

    def test_cprofile(self):
        results = self.do_profiling()
        expected = self.get_expected_output()
        self.assertEqual(results[0], 1000)
        for i, method in enumerate(self.methodnames):
            if results[i+1] != expected[method]:
                print("Stats.%s output for %s doesn't fit expectation!" %
                      (method, self.profilerclass.__name__))
                print('\n'.join(unified_diff(
                                  results[i+1].split('\n'),
                                  expected[method].split('\n'))))