Build failed in Jenkins: Ant-Build-Matrix-master » Open JDK 1.8 (Only on ubuntu nodes),Windows #831

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See <https://builds.apache.org/job/Ant-Build-Matrix-master/jdk=Open%20JDK%201.8%20(Only%20on%20ubuntu%20nodes),label=Windows/831/>

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Started by upstream project "Ant-Build-Matrix-master" build number 831
originally caused by:
 Started by user bodewig
[EnvInject] - Loading node environment variables.
Building remotely on windows2 (Windows) in workspace <https://builds.apache.org/job/Ant-Build-Matrix-master/jdk=Open%20JDK%201.8%20(Only%20on%20ubuntu%20nodes),label=Windows/ws/>
Cloning the remote Git repository
Cloning repository https://git-wip-us.apache.org/repos/asf/ant.git
 > git init <https://builds.apache.org/job/Ant-Build-Matrix-master/jdk=Open%20JDK%201.8%20(Only%20on%20ubuntu%20nodes),label=Windows/ws/> # timeout=10
Fetching upstream changes from https://git-wip-us.apache.org/repos/asf/ant.git
 > git --version # timeout=10
 > git -c core.askpass=true fetch --tags --progress https://git-wip-us.apache.org/repos/asf/ant.git +refs/heads/*:refs/remotes/origin/*
 > git config remote.origin.url https://git-wip-us.apache.org/repos/asf/ant.git # timeout=10
 > git config --add remote.origin.fetch +refs/heads/*:refs/remotes/origin/* # timeout=10
 > git config remote.origin.url https://git-wip-us.apache.org/repos/asf/ant.git # timeout=10
Cleaning workspace
 > git rev-parse --verify HEAD # timeout=10
No valid HEAD. Skipping the resetting
 > git clean -fdx # timeout=10
Fetching upstream changes from https://git-wip-us.apache.org/repos/asf/ant.git
 > git -c core.askpass=true fetch --tags --progress https://git-wip-us.apache.org/repos/asf/ant.git +refs/heads/*:refs/remotes/origin/*
Checking out Revision f8a27a13f9c0255ad2993b01c55bfac7e09911f9 (refs/remotes/origin/master)
 > git config core.sparsecheckout # timeout=10
 > git checkout -f f8a27a13f9c0255ad2993b01c55bfac7e09911f9
First time build. Skipping changelog.
[EnvInject] - Executing scripts and injecting environment variables after the SCM step.
[EnvInject] - Injecting as environment variables the properties content 
LANG=en_US.utf8

[EnvInject] - Variables injected successfully.
[Windows] $ cmd.exe /C '"f:\jenkins\jenkins-slave\tools\hudson.tasks.Ant_AntInstallation\ant-1.9.3\bin\ant.bat -file launch-build.xml -Dlabel=Windows "-Djdk=Open JDK 1.8 (Only on ubuntu nodes)" && exit %%ERRORLEVEL%%"'
Unable to locate tools.jar. Expected to find it in C:\Program Files\Java\jre7\lib\tools.jar
Buildfile: <https://builds.apache.org/job/Ant-Build-Matrix-master/jdk=Open%20JDK%201.8%20(Only%20on%20ubuntu%20nodes),label=Windows/ws/launch-build.xml>

launch:
     [echo] Launching <https://builds.apache.org/job/Ant-Build-Matrix-master/jdk=Open%20JDK%201.8%20(Only%20on%20ubuntu%20nodes),label=Windows/ws/build.bat> allclean test -Dignore.tests.failed=true -Doptional.jars.whenmanifestonly=skip
     [exec] The system cannot find the path specified.
     [exec] 
     [exec] ... Bootstrapping Ant Distribution
     [exec] JAVA_HOME=/home/jenkins/tools/java/jdk1.8.0
     [exec] JAVA=/home/jenkins/tools/java/jdk1.8.0\bin\java
     [exec] JAVAC=/home/jenkins/tools/java/jdk1.8.0\bin\javac
     [exec] CLASSPATH=;lib\optional\ant-antunit-1.3.jar;lib\optional\hamcrest-core-1.3.jar;lib\optional\junit-3.8.2.jar;lib\optional\junit-4.11.jar;build\classes;src\main;
     [exec] 
     [exec] ... Compiling Ant Classes
     [exec] 
     [exec] ... Cleaning Up Build Directories
     [exec] 
     [exec] ... Done Bootstrapping Ant Distribution
     [exec] Bootstrap FAILED

BUILD SUCCESSFUL
Total time: 0 seconds
Recording test results
ERROR: Step ‘Publish JUnit test result report’ failed: No test report files were found. Configuration error?