regrtest can reports false SUCCESS and skip tests when a -j worker dies#101634
Description
See in https://buildbot.python.org/all/#/builders/424/builds/3407/steps/5/logs/stdio (Raspbian)
... 0:04:46 load avg: 7.28 [ 48/434] test_isinstance passed -- running: test_largefile (2 min 54 sec) 0:05:03 load avg: 7.39 [ 49/434] test_utf8source passed -- running: test_largefile (3 min 11 sec), test_unittest (38.7 sec) Warning -- regrtest worker thread failed: Traceback (most recent call last): Warning -- File "/var/lib/buildbot/workers/3.x.gps-raspbian.nondebug/build/Lib/test/libregrtest/runtest_mp.py", line 342, in run Warning -- mp_result = self._runtest(test_name) Warning -- ^^^^^^^^^^^^^^^^^^^^^^^^ Warning -- File "/var/lib/buildbot/workers/3.x.gps-raspbian.nondebug/build/Lib/test/libregrtest/runtest_mp.py", line 301, in _runtest Warning -- stdout = stdout_fh.read().strip() Warning -- ^^^^^^^^^^^^^^^^ Warning -- File "<frozen codecs>", line 322, in decode Warning -- UnicodeDecodeError: 'utf-8' codec can't decode byte 0xa9 in position 35: invalid start byte Kill <TestWorkerProcess #1 running test=test_tempfile pid=7836 time=21.8 sec> process group Kill <TestWorkerProcess #2 running test=test_largefile pid=7700 time=3 min 32 sec> process group == Tests result: SUCCESS == 385 tests omitted: test___all__ test__locale test__opcode test__osx_support test__xxinterpchannels test__xxsubinterpreters test_abc test_aifc test_argparse test_array test_asdl_parser test_ast test_asyncgen test_asyncio test_atexit test_audioop test_audit test_base64 ... This might be an infrastructure issue or an actual issue with real non utf-8 data making it through the mp sockets. Regardless, it should've triggered an error and exit 1 instead of a false SUCCESS exit 0.