Build failed in Jenkins: java-parent-project-v7-multi » Zulu-8,WindowsServer2012 #939

[Shibboleth Jenkins]

See <https://build.shibboleth.net/jenkins/job/java-parent-project-v7-multi/jdk=Zulu-8,label=WindowsServer2012/939/display/redirect>

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Started by upstream project "java-parent-project-v7-multi" build number 939
originally caused by:
 Started by user Tom Zeller
Building remotely on WindowsServer2012 (windows) in workspace <https://build.shibboleth.net/jenkins/job/java-parent-project-v7-multi/jdk=Zulu-8,label=WindowsServer2012/ws/>
 > git rev-parse --is-inside-work-tree # timeout=10
Fetching changes from the remote Git repository
 > git config remote.origin.url git://git.shibboleth.net/java-parent-project # timeout=10
Fetching upstream changes from git://git.shibboleth.net/java-parent-project
 > git --version # timeout=10
 > git fetch --tags --progress git://git.shibboleth.net/java-parent-project +refs/heads/*:refs/remotes/origin/*
Checking out Revision 9c110dea71aafec5bffe4a7122490665b3f27a7e (refs/remotes/origin/maint-7)
 > git config core.sparsecheckout # timeout=10
 > git checkout -f 9c110dea71aafec5bffe4a7122490665b3f27a7e
Commit message: "Use TLS 1.2"
 > git rev-list --no-walk 9c110dea71aafec5bffe4a7122490665b3f27a7e # timeout=10
[WindowsServer2012] $ cmd.exe /C '""C:\Program Files\Apache\apache-maven-3.3.1\bin\mvn.cmd"' -Djdk=Zulu-8 '"-Dmatrix-combinations=(jdk == 'Zulu-8' && label == 'WindowsServer2012')"' -Dlabel=WindowsServer2012 clean test -Prelease --update-snapshots --fail-at-end && exit %%ERRORLEVEL%%"

Error: JAVA_HOME is set to an invalid directory. 
JAVA_HOME = "C:\Program Files\Java\zulu8.30.0.1-jdk8.0.172-win_i686" 
Please set the JAVA_HOME variable in your environment to match the 
location of your Java installation. 

Build step 'Invoke top-level Maven targets' marked build as failure
TestNG Reports Processing: START
Looking for TestNG results report in workspace using pattern: **/target/surefire-reports/testng-results.xml
Did not find any matching files.