Build failed in Jenkins: flink-snapshot-deployment-1.6 #92

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See <https://builds.apache.org/job/flink-snapshot-deployment-1.6/92/display/redirect>

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Started by timer
[EnvInject] - Loading node environment variables.
Building remotely on H40 (ubuntu xenial) in workspace <https://builds.apache.org/job/flink-snapshot-deployment-1.6/ws/>
Wiping out workspace first.
Cloning the remote Git repository
Using shallow clone
Cloning repository https://gitbox.apache.org/repos/asf/flink.git
 > git init <https://builds.apache.org/job/flink-snapshot-deployment-1.6/ws/> # timeout=10
Fetching upstream changes from https://gitbox.apache.org/repos/asf/flink.git
 > git --version # timeout=10
 > git fetch --tags --progress https://gitbox.apache.org/repos/asf/flink.git +refs/heads/*:refs/remotes/origin/* --depth=1
 > git config remote.origin.url https://gitbox.apache.org/repos/asf/flink.git # timeout=10
 > git config --add remote.origin.fetch +refs/heads/*:refs/remotes/origin/* # timeout=10
 > git config remote.origin.url https://gitbox.apache.org/repos/asf/flink.git # timeout=10
Fetching upstream changes from https://gitbox.apache.org/repos/asf/flink.git
 > git fetch --tags --progress https://gitbox.apache.org/repos/asf/flink.git +refs/heads/*:refs/remotes/origin/* --depth=1
 > git rev-parse refs/remotes/origin/release-1.6^{commit} # timeout=10
 > git rev-parse refs/remotes/origin/refs/heads/release-1.6^{commit} # timeout=10
Checking out Revision 0fbc8a367362c5865ca1c84740e4525837e325d9 (refs/remotes/origin/release-1.6)
 > git config core.sparsecheckout # timeout=10
 > git checkout -f 0fbc8a367362c5865ca1c84740e4525837e325d9
Commit message: "[FLINK-10357][tests] Improve StreamingFileSink E2E test stability. (#6999)"
 > git rev-list --no-walk 246fd8e212eff48505fe037a783ed03288a4cae6 # timeout=10
First time build. Skipping changelog.
Setting MAVEN_3_2_5_HOME=/home/jenkins/tools/maven/apache-maven-3.2.5
[flink-snapshot-deployment-1.6] $ /bin/bash /tmp/jenkins4685965013670005196.sh
<https://builds.apache.org/job/flink-snapshot-deployment-1.6/ws/>
install lifecycle mapping fake plugin
Cloning into 'dummy-lifecycle-mapping-plugin'...
Error: JAVA_HOME is not defined correctly.
  We cannot execute /home/jenkins/tools/java/latest1.8/bin/java
Build step 'Execute shell' marked build as failure
Setting MAVEN_3_2_5_HOME=/home/jenkins/tools/maven/apache-maven-3.2.5

Jenkins build is back to normal : flink-snapshot-deployment-1.6 #93

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See <https://builds.apache.org/job/flink-snapshot-deployment-1.6/93/display/redirect>