See <https://builds.apache.org/job/UIMA-Ruta/756/>
- Build failed in Jenkins: UIMA-Ruta #753 Apache Jenkins Server
- Build failed in Jenkins: UIMA-Ruta #754 Apache Jenkins Server
- Build failed in Jenkins: UIMA-Ruta #755 Apache Jenkins Server
- Jenkins build is unstable: UIMA-Ruta #7... Apache Jenkins Server
- Jenkins build is back to stable : U... Apache Jenkins Server
