See <https://builds.apache.org/job/karaf-4.0.x/250/changes>
- Jenkins build is unstable: karaf-4.0.x #246 Apache Jenkins Server
- Build failed in Jenkins: karaf-4.0.x #247 Apache Jenkins Server
- Jenkins build is unstable: karaf-4.0.x #248 Apache Jenkins Server
- Jenkins build is still unstable: karaf-... Apache Jenkins Server
- Jenkins build is back to stable : k... Apache Jenkins Server
