See <https://builds.apache.org/job/karaf-master/4812/display/redirect?page=changes>
- Jenkins build became unstable: karaf-master #4809 Apache Jenkins Server
- Jenkins build is still unstable: karaf-master #... Apache Jenkins Server
- Build failed in Jenkins: karaf-master #4811 Apache Jenkins Server
- Jenkins build is unstable: karaf-master... Apache Jenkins Server
