test_report_header defines an inline conftest.py using the
pytest_report_header(startdir) hook signature; newer pytest pluggy
hook-signature validation rejects "startdir" (renamed to start_path
long ago), so the nested pytest subprocess it spawns exits with
PluginValidationError/INTERNAL_ERROR, and the outer assert
result.ret == 0 fails. Version-skew in pytest-sugars own test suite,
not a runtime bug.
AI-Generated: Uses Claude Code
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Khem Raj