The default, shared 0xacab runner is quite slow, therefore, it's disabled in our repo. If people forking our repo, the CI / CD settings are copied as well. This makes the CI jobs for them to be stuck up until GitLab kills them because of a timeout. Improve this situation at least via extending the contributing guide with a note regarding this. Relates #3088a1cbac3
After you've reviewed these contribution guidelines, you'll be all set to contribute to this project.