@jeffgus on the Repository URL use http(s):// and not ssh. That's what i did on latest Jenkins with Gitbucket 3.11. When you test the hook it will fire off the job. It came by slow freight, i was waiting for a job to build and it dawned on me i might have used the ssh path. I created a jenkins-ci user in gitbucket and added it as a member of the group i have my projects under... Then in Jenkins Credentials i added that user account.