some test failures with py3's py-test, "PytestWarning: cannot collect test class 'XXX' because it has a __init__ constructor", but these are seen with the previous version and some other ports too.
some test failures with py3's py-test, "PytestWarning: cannot collect test class 'XXX' because it has a __init__ constructor", but these are seen with the previous version and some other ports too.