See <https://builds.apache.org/job/kafka-trunk-jdk7/667/changes>
- Build failed in Jenkins: kafka-trunk-jdk7 #664 Apache Jenkins Server
- Build failed in Jenkins: kafka-trunk-jdk7 #665 Apache Jenkins Server
- Build failed in Jenkins: kafka-trunk-jdk7 #... Apache Jenkins Server
- Jenkins build is back to normal : kafka... Apache Jenkins Server
