[xwiki-devs] OutOfMemory exception when running extension tests

I just noticed http://ci.xwiki.org/job/xwiki-enterprise-test-extension/org.xwiki.enterpris… 22:16:29.433 [main] INFO org.xwiki.test.ui.TestDebugger - ExtensionTest-testInstallScriptService started 22:19:55.911 [Thread-2] ERROR o.x.t.i.XWikiLogOutputStream - Exception in thread "qtp850442967-17" java.lang.OutOfMemoryError: PermGen space 22:20:16.643 [Thread-2] ERROR o.x.t.i.XWikiLogOutputStream - Exception in thread "qtp850442967-15" java.lang.OutOfMemoryError: PermGen space 22:20:35.600 [Thread-2] ERROR o.x.t.i.XWikiLogOutputStream - Exception in thread "Lucene Index Updater" java.lang.OutOfMemoryError: PermGen space 22:20:39.197 [Thread-2] ERROR o.x.t.i.XWikiLogOutputStream - Exception in thread "qtp850442967-18" java.lang.OutOfMemoryError: PermGen space 22:20:43.065 [Thread-2] ERROR o.x.t.i.XWikiLogOutputStream - Exception in thread "qtp850442967-642" java.lang.OutOfMemoryError: PermGen space 22:20:46.766 [Thread-2] ERROR o.x.t.i.XWikiLogOutputStream - Exception in thread "qtp850442967-12" java.lang.OutOfMemoryError: PermGen space 22:21:08.863 [main] INFO org.xwiki.test.ui.TestDebugger - ExtensionTest-testInstallScriptService failed What are the qtp threads for? Thanks, Marius