See <https://builds.apache.org/job/zookeeper-branch36-java8/16/display/redirect?page=changes>
- Jenkins build became unstable: zookeeper-branch36-j... Apache Jenkins Server
- Jenkins build is still unstable: zookeeper-bran... Apache Jenkins Server
- Jenkins build is still unstable: zookeeper-... Apache Jenkins Server
- Build failed in Jenkins: zookeeper-bran... Apache Jenkins Server
- Jenkins build is back to normal : z... Apache Jenkins Server