Build failed in Jenkins: kafka-trunk-jdk8 #579

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See <https://builds.apache.org/job/kafka-trunk-jdk8/579/changes>

Changes:

[wangguoz] MINOR: Added more integration tests

------------------------------------------
Started by an SCM change
[EnvInject] - Loading node environment variables.
Building remotely on jenkins-test-a4 (jenkins-cloud-4GB cloud-slave Ubuntu ubuntu jenkins-cloud-8GB) in workspace <https://builds.apache.org/job/kafka-trunk-jdk8/ws/>
 > git rev-parse --is-inside-work-tree # timeout=10
Fetching changes from the remote Git repository
 > git config remote.origin.url https://git-wip-us.apache.org/repos/asf/kafka.git # timeout=10
Fetching upstream changes from https://git-wip-us.apache.org/repos/asf/kafka.git
 > git --version # timeout=10
 > git -c core.askpass=true fetch --tags --progress https://git-wip-us.apache.org/repos/asf/kafka.git +refs/heads/*:refs/remotes/origin/*
 > git rev-parse refs/remotes/origin/trunk^{commit} # timeout=10
 > git rev-parse refs/remotes/origin/origin/trunk^{commit} # timeout=10
Checking out Revision b3d2c0dabbcfc8e5d286e181450029adefc9fee8 (refs/remotes/origin/trunk)
 > git config core.sparsecheckout # timeout=10
 > git checkout -f b3d2c0dabbcfc8e5d286e181450029adefc9fee8
 > git rev-list 88e5d5a9a16f4831b8a178355d38d203febe85f9 # timeout=10
Setting GRADLE_2_4_RC_2_HOME=/home/jenkins/jenkins-slave/tools/hudson.plugins.gradle.GradleInstallation/Gradle_2.4-rc-2
Setting JDK1_8_0_66_UNLIMITED_SECURITY_HOME=/home/jenkins/tools/java/jdk1.8.0_66-unlimited-security
[kafka-trunk-jdk8] $ /bin/bash -xe /tmp/hudson3430700960108765391.sh
+ /home/jenkins/jenkins-slave/tools/hudson.plugins.gradle.GradleInstallation/Gradle_2.4-rc-2/bin/gradle

ERROR: JAVA_HOME is set to an invalid directory: /home/jenkins/tools/java/jdk1.8.0_66-unlimited-security

Please set the JAVA_HOME variable in your environment to match the
location of your Java installation.

Build step 'Execute shell' marked build as failure
Recording test results
Setting GRADLE_2_4_RC_2_HOME=/home/jenkins/jenkins-slave/tools/hudson.plugins.gradle.GradleInstallation/Gradle_2.4-rc-2
Setting JDK1_8_0_66_UNLIMITED_SECURITY_HOME=/home/jenkins/tools/java/jdk1.8.0_66-unlimited-security
ERROR: Step ‘Publish JUnit test result report’ failed: Test reports were found but none of them are new. Did tests run? 
For example, <https://builds.apache.org/job/kafka-trunk-jdk8/ws/core/build/test-results/TEST-kafka.KafkaTest.xml> is 1 hr 19 min old

Setting GRADLE_2_4_RC_2_HOME=/home/jenkins/jenkins-slave/tools/hudson.plugins.gradle.GradleInstallation/Gradle_2.4-rc-2
Setting JDK1_8_0_66_UNLIMITED_SECURITY_HOME=/home/jenkins/tools/java/jdk1.8.0_66-unlimited-security

Jenkins build is back to normal : kafka-trunk-jdk8 #580

[Apache Jenkins Server <je...@builds.apache.org>]

See <https://builds.apache.org/job/kafka-trunk-jdk8/580/>