Hi! I'm trying to introduce python-websockets as a dependency to SUSE:SLE-15-SP1:Update. Unfortunately, the testsuite of the package fails on s390x with the following testsuite failure (see below). I have been trying to reproduce the issue with upstream code checked out from git on a Debian s390x porterbox but even with 9.1, I am unable to reproduce the failure with Python 3.9 (I cannot test anything earlier). Does anyone have a suggestion on how to resolve this problem? I would be very grateful if anyone has any tips. Thanks, Adrian ========================================================================================= [ 70s] + echo python3 [ 70s] + PYTHONPATH=/home/abuild/rpmbuild/BUILDROOT/python-websockets-9.1-150000.3.5.5.s390x/usr/lib64/python3.6/site-packages [ 70s] + python3 -m unittest [ 75s] .......................F.................................................................................................................... ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ................................................ [ 75s] ====================================================================== [ 75s] FAIL: test_remote_no_context_takeover (tests.extensions.test_permessage_deflate.PerMessageDeflateTests) [ 75s] ---------------------------------------------------------------------- [ 75s] Traceback (most recent call last): [ 75s] File "/home/abuild/rpmbuild/BUILD/websockets-9.1/tests/extensions/test_permessage_deflate.py", line 213, in test_remote_no_context_takeover [ 75s] self.assertIn("invalid distance too far back", str(exc.exception)) [ 75s] AssertionError: 'invalid distance too far back' not found in 'Error -3 while decompressing data: Operation-Ending-Supplemental Code is 0x40' [ 75s] [ 75s] ---------------------------------------------------------------------- [ 75s] Ran 888 tests in 4.670s