Error location / crash entry missing from non-native tracebacks (due to generator / early setup?)

[blueyed]

With the following:

diff --git i/src/_pytest/logging.py w/src/_pytest/logging.py
index df0da3daa..2e5d0cfc0 100644
--- i/src/_pytest/logging.py
+++ w/src/_pytest/logging.py
@@ -639,6 +639,7 @@ def _runtest_for_main(self, item, when):
             if self.print_logs:
                 # Add a captured log section to the report.
                 log = log_handler.stream.getvalue().strip()
+                assert 0, log
                 item.add_report_section(when, "log", log)

     @pytest.hookimpl(hookwrapper=True)

And running pytest testing/test_capture.py -k test_capture_with_live_logging you will get:

============== test session starts ===============
platform linux -- Python 3.8.1, pytest-5.3.3.dev50+gca8a1e47b, py-1.8.2.dev4+g9d3c8be7.d20200128, pluggy-0.13.2.dev5+g76838b1
…
collected 1 item

testing/test_capture.py EE                 [100%]

===================== ERRORS =====================
_ ERROR at setup of test_capture_with_live_logging[capfd] _
/usr/lib/python3.8/contextlib.py:120: in __exit__
    next(self.gen)
/usr/lib/python3.8/contextlib.py:120: in __exit__
    next(self.gen)
E   AssertionError
_ ERROR at teardown of test_capture_with_live_logging[capfd] _
/usr/lib/python3.8/contextlib.py:120: in __exit__
    next(self.gen)
/usr/lib/python3.8/contextlib.py:120: in __exit__
    next(self.gen)
E   AssertionError
============ short test summary info =============
ERROR testing/test_capture.py::test_capture_with_live_logging[capfd]
ERROR testing/test_capture.py::test_capture_with_live_logging[capfd]
=============== 2 errors in 0.10s ================

I.e. the location for the assertion error is wrong / not included.

With --tb=native:

===================== ERRORS =====================
_ ERROR at setup of test_capture_with_live_logging[capfd] _
Traceback (most recent call last):
  File "/usr/lib/python3.8/contextlib.py", line 120, in __exit__
    next(self.gen)
  File "…/Vcs/pytest/src/_pytest/logging.py", line 613, in _runtest_for
    yield
  File "/usr/lib/python3.8/contextlib.py", line 120, in __exit__
    next(self.gen)
  File "…/Vcs/pytest/src/_pytest/logging.py", line 642, in _runtest_for_main
    assert 0, log
AssertionError
_ ERROR at teardown of test_capture_with_live_logging[capfd] _
Traceback (most recent call last):
  File "/usr/lib/python3.8/contextlib.py", line 120, in __exit__
    next(self.gen)
  File "…/Vcs/pytest/src/_pytest/logging.py", line 613, in _runtest_for
    yield
  File "/usr/lib/python3.8/contextlib.py", line 120, in __exit__
    next(self.gen)
  File "…/Vcs/pytest/src/_pytest/logging.py", line 642, in _runtest_for_main
    assert 0, log
AssertionError
============ short test summary info =============
ERROR testing/test_capture.py::test_capture_with_live_logging[capfd]
ERROR testing/test_capture.py::test_capture_with_live_logging[capfd]

This is likely due to this happening during setup, and that pytest filters itself out of it, but the actual errors location should be included always probably?