This is a spin-off of issue 4305, which is roughly the same issue, but for the
older cppunit plugin.
The attached XML output file is an edit of a file that gave me problems. CppUnit
crashes completely, which xUnit apparently doesn't. The build that was given
this file resulted in these lines in the build console output:

[xUnit] [CppUnit] - Processing 18 files with the pattern
'build/*/unittest-.xml' relative to 'workspace'.

[xUnit] [ERROR] - Couldn't convert the file
'workspace\build\dir\unittest-01.xml' into a JUnit file.

That's very good, and I was sent an email with this. However, the next build
(with the offending XML fixed) resulted in this:

FATAL: Unable to delete workspace\xunitTemp\file-1791802469.xml

java.io.IOException: Unable to delete workspace\xunitTemp\file-1791802469.xml

at hudson.Util.deleteFile(Util.java:225)

at hudson.Util.deleteRecursive(Util.java:257)

at hudson.Util.deleteContentsRecursive(Util.java:186)

at hudson.Util.deleteRecursive(Util.java:256)

at hudson.FilePath$9.invoke(FilePath.java:748)

at hudson.FilePath$9.invoke(FilePath.java:746)

at hudson.FilePath.act(FilePath.java:676)

at hudson.FilePath.act(FilePath.java:660)

at hudson.FilePath.deleteRecursive(FilePath.java:746)

at
com.thalesgroup.hudson.plugins.xunit.XUnitPublisher.perform(XUnitPublisher.java:89)

at hudson.tasks.BuildStepMonitor$2.perform(BuildStepMonitor.java:27)

at hudson.model.AbstractBuild$AbstractRunner.perform(AbstractBuild.java:480)

at
hudson.model.AbstractBuild$AbstractRunner.performAllBuildStep(AbstractBuild.java:466)

at
hudson.model.AbstractBuild$AbstractRunner.performAllBuildStep(AbstractBuild.java:454)

at hudson.model.Build$RunnerImpl.post2(Build.java:146)

at hudson.model.AbstractBuild$AbstractRunner.post(AbstractBuild.java:438)

at hudson.model.Run.run(Run.java:1129)

at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)

at hudson.model.ResourceController.execute(ResourceController.java:93)

at hudson.model.Executor.run(Executor.java:122)

And indeed I cannot delete the temp file manually either. It seems that, despite
the nice error message in previous build, something crashed internally and is
keeping that file open. It is listed as 0 bytes long.
I'm running Hudson 1.321, xUnit 0.1.3, on a Windows XP machine.

Restarting Hudson cleared the problem, but that's not a good solution