上流プロジェクト"system-library-update"の#23が実行　
元の原因: 
 ユーザーjfutが実行
ビルドします。 ワークスペース: /home/services/jenkins/jobs/system-library-update/workspace/jdk/JDK-1.8
[JDK-1.8] $ /bin/sh -xe /tmp/hudson4528264939264082118.sh
+ cat
+ cat
[JDK-1.8] $ /home/services/jenkins/tools/hudson.tasks.Ant_AntInstallation/LATEST_ANT/bin/ant -Djdk=JDK-1.8
Unable to locate tools.jar. Expected to find it in /home/services/jenkins/tools/hudson.model.JDK/JDK-1.8/lib/tools.jar
Buildfile: /home/services/jenkins/jobs/system-library-update/workspace/jdk/JDK-1.8/build.xml

BUILD SUCCESSFUL
Total time: 0 seconds
[JDK-1.8] $ /home/services/jenkins/tools/hudson.tasks.Maven_MavenInstallation/LATEST_MAVEN/bin/mvn -Djdk=JDK-1.8 clean
Error: JAVA_HOME is not defined correctly.
  We cannot execute /home/services/jenkins/tools/hudson.model.JDK/JDK-1.8/bin/java
Build step 'Mavenの呼び出し' marked build as failure
Started calculate disk usage of build
Finished Calculation of disk usage of build in 0 seconds
Started calculate disk usage of workspace
Finished Calculation of disk usage of workspace in 0 seconds
Finished: FAILURE