See <https://builds.apache.org/job/kafka-trunk-jdk8/493/changes>
- Build failed in Jenkins: kafka-trunk-jdk8 #490 Apache Jenkins Server
- Build failed in Jenkins: kafka-trunk-jdk8 #491 Apache Jenkins Server
- Build failed in Jenkins: kafka-trunk-jdk8 #... Apache Jenkins Server
- Jenkins build is back to normal : kafka... Apache Jenkins Server
