René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"`test_start_new_thread_failed` flaky: failed on macOS (free threading)","articleBody":"# Bug report\n\nSeen in https://github.com/python/cpython/actions/runs/12082953758/job/33695120037?pr=127399\n\n```\n======================================================================\nFAIL: test_start_new_thread_failed (test.test_threading.ThreadTests.test_start_new_thread_failed)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n  File \"/Users/admin/actions-runner/_work/cpython/cpython/Lib/test/test_threading.py\", line 1201, in test_start_new_thread_failed\n    _, out, err = assert_python_ok(\"-u\", \"-c\", code)\n                  ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^\n  File \"/Users/admin/actions-runner/_work/cpython/cpython/Lib/test/support/script_helper.py\", line 182, in assert_python_ok\n    return _assert_python(True, *args, **env_vars)\n  File \"/Users/admin/actions-runner/_work/cpython/cpython/Lib/test/support/script_helper.py\", line 167, in _assert_python\n    res.fail(cmd_line)\n    ~~~~~~~~^^^^^^^^^^\n  File \"/Users/admin/actions-runner/_work/cpython/cpython/Lib/test/support/script_helper.py\", line 80, in fail\n    raise AssertionError(f\"Process return code is {exitcode}\\n\"\n    ...\u003c10 lines\u003e...\n                         f\"---\")\nAssertionError: Process return code is -6 (SIGABRT)\ncommand line: ['/Users/admin/actions-runner/_work/cpython/cpython/python.exe', '-X', 'faulthandler', '-I', '-u', '-c', 'if 1:\\n            import resource\\n            import _thread\\n\\n            def f():\\n                print(\"shouldn\\'t be printed\")\\n\\n            limits = resource.getrlimit(resource.RLIMIT_NPROC)\\n            [_, hard] = limits\\n            resource.setrlimit(resource.RLIMIT_NPROC, (0, hard))\\n\\n            try:\\n                _thread.start_new_thread(f, ())\\n            except RuntimeError:\\n                print(\\'ok\\')\\n            else:\\n                print(\\'!skip!\\')\\n        ']\n```\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-127549\n* gh-127574\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/colesbury","@type":"Person","name":"colesbury"},"datePublished":"2024-11-29T16:06:58.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/127421/cpython/issues/127421"}