Forgot to include the test failure message:

======================================================================
FAIL: test_all (test.test_eintr.EINTRTests)
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Traceback (most recent call last):
  File "/data/prj/python/git/python3-3.8/Lib/test/test_eintr.py", line 18, in test_all
    script_helper.assert_python_ok("-u", tester)
  File "/data/prj/python/git/python3-3.8/Lib/test/support/script_helper.py", line 157, in assert_python_ok
    return _assert_python(True, *args, **env_vars)
  File "/data/prj/python/git/python3-3.8/Lib/test/support/script_helper.py", line 143, in _assert_python
    res.fail(cmd_line)
  File "/data/prj/python/git/python3-3.8/Lib/test/support/script_helper.py", line 70, in fail
    raise AssertionError("Process return code is %d\n"
AssertionError: Process return code is 1
command line: ['/data/prj/python/python3-3.8/python', '-X', 'faulthandler', '-I', '-u', '/data/prj/python/git/python3-3.8/Lib/test/eintrdata/eintr_tester.py']

stdout:
---

---

stderr:
---
.E......sss.............
======================================================================
ERROR: test_lockf (__main__.FNTLEINTRTest)
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Traceback (most recent call last):
  File "/data/prj/python/git/python3-3.8/Lib/test/eintrdata/eintr_tester.py", line 522, in test_lockf
    self._lock(fcntl.lockf, "lockf")
  File "/data/prj/python/git/python3-3.8/Lib/test/eintrdata/eintr_tester.py", line 507, in _lock
    lock_func(f, fcntl.LOCK_EX | fcntl.LOCK_NB)
PermissionError: [Errno 13] Permission denied

----------------------------------------------------------------------
Ran 24 tests in 9.692s

FAILED (errors=1, skipped=3)
---

----------------------------------------------------------------------

Ran 1 test in 10.404s

FAILED (failures=1)
test test_eintr failed
test_eintr failed

== Tests result: FAILURE ==

1 test failed:
    test_eintr

Total duration: 10 sec 645 ms