See <https://builds.apache.org/job/Ant-Build-Matrix-1.9.x-Linux/jdk=JDK%201.5%20(latest),label=Ubuntu/51/changes>
- Jenkins build became unstable: Ant-Build-Matrix-1.9... Apache Jenkins Server
- Build failed in Jenkins: Ant-Build-Matrix-1.9.x... Apache Jenkins Server
- Jenkins build is back to normal : Ant-Build... Apache Jenkins Server
