The check for circleci fails when merging a PR but it is green when running inside the PR.
I updated circle ci to last syntax (#160 ) but this does not solve the problem. From what I see (https://discuss.circleci.com/t/git-github-com-permission-denied-publickey-on-repo-that-previously-worked/37763/4) it should be a circleci problem and some key has to be regenerated.