Build failed in Jenkins: Ant-Build-Matrix » JDK 1.6 (latest),Windows #741

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See <https://builds.apache.org/job/Ant-Build-Matrix/jdk=JDK%201.6%20(latest),label=Windows/741/>

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Started by upstream project "Ant-Build-Matrix" build number 741
originally caused by:
 Started by an SCM change
Building remotely on windows2 (Windows) in workspace <https://builds.apache.org/job/Ant-Build-Matrix/jdk=JDK%201.6%20(latest),label=Windows/ws/>
 > git rev-parse --is-inside-work-tree
Fetching changes from the remote Git repository
 > git config remote.origin.url https://git-wip-us.apache.org/repos/asf/ant.git
Cleaning workspace
 > git rev-parse --verify HEAD
Resetting working tree
 > git reset --hard
 > git clean -fdx
Fetching upstream changes from https://git-wip-us.apache.org/repos/asf/ant.git
 > git --version
 > git fetch --tags --progress https://git-wip-us.apache.org/repos/asf/ant.git +refs/heads/*:refs/remotes/origin/*
Checking out Revision d6f6f5c169a17a1c1f93c08d1dca90ff42cee341 (origin/master)
 > git config core.sparsecheckout
 > git checkout -f d6f6f5c169a17a1c1f93c08d1dca90ff42cee341
 > git rev-list 123266127cd3c0c41275de1cf41e60efed99ebe3
FATAL: Invalid id: Process leaked file descriptors. See http://wiki.jenkins-ci.org/display/JENKINS/Spawning+processes+from+build for more information
java.lang.IllegalArgumentException: Invalid id: Process leaked file descriptors. See http://wiki.jenkins-ci.org/display/JENKINS/Spawning+processes+from+build for more information
	at org.eclipse.jgit.lib.ObjectId.fromString(ObjectId.java:232)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.doRevList(CliGitAPIImpl.java:1604)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.revList(CliGitAPIImpl.java:1590)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.isCommitInRepo(CliGitAPIImpl.java:1615)
	at hudson.plugins.git.GitAPI.isCommitInRepo(GitAPI.java:190)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at hudson.remoting.RemoteInvocationHandler$RPCRequest.perform(RemoteInvocationHandler.java:299)
	at hudson.remoting.RemoteInvocationHandler$RPCRequest.call(RemoteInvocationHandler.java:280)
	at hudson.remoting.RemoteInvocationHandler$RPCRequest.call(RemoteInvocationHandler.java:239)
	at hudson.remoting.UserRequest.perform(UserRequest.java:118)
	at hudson.remoting.UserRequest.perform(UserRequest.java:48)
	at hudson.remoting.Request$2.run(Request.java:328)
	at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
	at java.util.concurrent.FutureTask.run(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at hudson.remoting.Engine$1$1.run(Engine.java:63)
	at java.lang.Thread.run(Unknown Source)