See <https://builds.apache.org/job/Derby-trunk/2466/changes>
- Build failed in Jenkins: Derby-trunk #2462 Apache Jenkins Server
- Build failed in Jenkins: Derby-trunk #2463 Apache Jenkins Server
- Jenkins build is unstable: Derby-trunk #246... Apache Jenkins Server
- Jenkins build is still unstable: Derby-... Apache Jenkins Server
- Jenkins build is back to stable : D... Apache Jenkins Server
