See <https://builds.apache.org/job/kafka-trunk-jdk7/1666/changes>
- Build failed in Jenkins: kafka-trunk-jdk7 #1662 Apache Jenkins Server
- Build failed in Jenkins: kafka-trunk-jdk7 #1663 Apache Jenkins Server
- Build failed in Jenkins: kafka-trunk-jdk7 #... Apache Jenkins Server
- Build failed in Jenkins: kafka-trunk-jd... Apache Jenkins Server
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