See <https://builds.apache.org/job/River-trunk/694/changes>
- Build failed in Jenkins: River-trunk #691 Apache Jenkins Server
- Build failed in Jenkins: River-trunk #692 Apache Jenkins Server
- Build failed in Jenkins: River-trunk #693 Apache Jenkins Server
- Jenkins build is unstable: River-trunk ... Apache Jenkins Server
- Jenkins build is still unstable: Ri... Apache Jenkins Server
- Jenkins build is back to stabl... Apache Jenkins Server
