test_matching_graph_symmetric[build_fast] hypothesis.errors.Flaky: Hypothesis test_matching_graph_symmetric(request=<FixtureRequest for <Function test_matching_graph_symmetric[build_fast]>>, caplog_context=make_caplog_context, build_func=build_fast, searches=[Search(['p0'], -1500.0), Search(['p0'], -3.336333333333333), Search(['p0'], -291.1883330461335), Search(['p0'], -6.000030000000001), Search(['p0'], -0.003000000000000001)]) produces unreliable results: Falsified on the first call but did not on a subsequent one Falsifying example: test_matching_graph_symmetric( request=<FixtureRequest for <Function test_matching_graph_symmetric[build_fast]>>, caplog_context=make_caplog_context, build_func=build_fast, searches=[Search(['p0'], -1500.0), Search(['p0'], -3.336333333333333), Search(['p0'], -291.1883330461335), Search(['p0'], -6.000030000000001), Search(['p0'], -0.003000000000000001)], ) Unreliable test timings! On an initial run, this test took 595.98ms, which exceeded the deadline of 300.00ms, but on a subsequent run it took 2.67 ms, which did not. If you expect this sort of variability in your test timings, consider turning deadlines off for this test by setting deadline=None. You can reproduce this example by temporarily adding @reproduce_failure('6.82.6', b'AXicY2AUZ2RkgAJedlYYm/GLH1M5IzszAzMjG8MHBjZGOUbGA1KrwICLnYmRoYE1+dKbiU0M+QzbGVkYDBlZGWYxA5WJMjMy/H86EwRmMDMwNEyWO1MVmqPG0JDhbHTXx4MjgvkMyNQioHofZmZGJoZbQE2CIE0XIBazAJ3QIPLIdPFTBgZThk6g7XXMQAvUgRo6GRi1GRlhpnMCNR2Y/TPiy26VBHYmH0ZGjmuJQNXdzMwg9W8YGABDOjFG') as a decorator on your test case