test_matching_graph_symmetric[build_full] hypothesis.errors.Flaky: Hypothesis test_matching_graph_symmetric(request=<FixtureRequest for <Function test_matching_graph_symmetric[build_full]>>, caplog_context=make_caplog_context, build_func=build_full, searches=[Search(['p0'], -5.699999999999999), Search(['p0'], 1599.7801976492185), Search(['p0'], -4.49993896484375), Search(['p0'], -5.700000119209289), Search(['p0'], -80.63267483223315), Search(['p0'], -3.1654228822919164), Search(['p0'], -6.180091359749889), Search(['p0'], -902.084812839561), Search(['p0'], -6.000030000000001), Search(['p0'], 2492.99997), Search(['p0'], -103.3)]) 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_full]>>, caplog_context=make_caplog_context, build_func=build_full, searches=[Search(['p0'], -5.699999999999999), Search(['p0'], 1599.7801976492185), Search(['p0'], -4.49993896484375), Search(['p0'], -5.700000119209289), Search(['p0'], -80.63267483223315), Search(['p0'], -3.1654228822919164), Search(['p0'], -6.180091359749889), Search(['p0'], -902.084812839561), Search(['p0'], -6.000030000000001), Search(['p0'], 2492.99997), Search(['p0'], -103.3)], ) Unreliable test timings! On an initial run, this test took 462.95ms, which exceeded the deadline of 300.00ms, but on a subsequent run it took 11.66 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('6.90.0', b'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') as a decorator on your test case