ZSystems

The package python-websockets is failing because of timeouts and the build is too slow:
https://build.opensuse.org/package/live_build_log/openSUSE:Factory:zSystems/python-websockets/standard/s390x

That can be fixed with a constraints file, that a build host with more memory should be chosen for this package.
1) Branch https://build.opensuse.org/package/show/devel:languages:python/python-websockets
2) "osc co" of your home directory
3) Create a file with the name _constraints
4) Learn with this example, which configurations are possible and how:
https://build.opensuse.org/package/view_file/mozilla:Factory/MozillaFirefox/_constraints?expand=1
5) Create a minimal configuration for the architecture s390x as an "overwrite condition" with expanding the physicalmemory.
6) "osc add _constraints"
7) "osc commit"