On travis-ci.com I see a message "Builds have been temporarily disabled for public repositories due to a negative credit balance. Please go to the Plan page to replenish your credit balance or alter your Consume paid credits for OSS setting." for a collective.* project.
I am confused...or is everyone moving on to Github Actions?
For Volto we moved to gh actions some time ago and it works quite well for us. Though, it will be lots of work to migrate all existing projects from Travis to gh actions...
I think some of the ideas and the configuration could be used. But the rest might be too zopefoundation specific. We tried to use it for our gocept open source repositories and failed because they are too different.