Overall my aim will actually be to move away from both Travis CI and Appveyor. I'm not sure if appveyor is even used by most extension authors, but we have used it for a bit now. Unfortunately, it is rather slow when there are more changes being pushed to phpBB or if there are lot of changes to or new pull requests.
In case anyone is interested, my playing field is currently this branch on my fork: https://github.com/marc1706/phpbb/tree/ ... ub-actions
All the PHP & db type combinations you can currently see as commented out already work: https://github.com/marc1706/phpbb/blob/ ... /tests.yml
The mssql tests still fail during functional tests but I also hope to have this fixed soon.
With regards to Travis CI it does currently look like they are not allocating any OSS credits due to a management decision:
https://twitter.com/james_hilliard/stat ... 6691843072
(as always, please be aware that this is not an official statement by Travis CI and might therefore also be a misunderstanding by the customer support representative)