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Hudson build#220: https://build.eclipse.org/hudson/job/cdt-nightly/220/testReport/junit/org.eclipse.cdt.projectmodel.tests/CProjectDescriptionSerializationTests/testTooManyConfigurations/ java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextEntry(HashMap.java:841) at java.util.HashMap$EntryIterator.next(HashMap.java:883) at java.util.HashMap$EntryIterator.next(HashMap.java:881) at java.util.HashMap.putAllForCreate(HashMap.java:481) at java.util.HashMap.clone(HashMap.java:713) at org.eclipse.cdt.internal.core.settings.model.CConfigurationSpecSettings.<init>(CConfigurationSpecSettings.java:171) at org.eclipse.cdt.internal.core.settings.model.CConfigurationSpecSettings.<init>(CConfigurationSpecSettings.java:145) at org.eclipse.cdt.internal.core.settings.model.CConfigurationDescription.getSpecSettings(CConfigurationDescription.java:359) at org.eclipse.cdt.internal.core.CConfigBasedDescriptor.updateConfiguration(CConfigBasedDescriptor.java:339) at org.eclipse.cdt.internal.core.CConfigBasedDescriptor.updateConfiguration(CConfigBasedDescriptor.java:323) at org.eclipse.cdt.internal.core.CConfigBasedDescriptorManager.doHandleEvent(CConfigBasedDescriptorManager.java:486) at org.eclipse.cdt.internal.core.CConfigBasedDescriptorManager.access$0(CConfigBasedDescriptorManager.java:465) at org.eclipse.cdt.internal.core.CConfigBasedDescriptorManager$1.handleEvent(CConfigBasedDescriptorManager.java:445) at org.eclipse.cdt.internal.core.settings.model.CProjectDescriptionManager.notifyListeners(CProjectDescriptionManager.java:2170) at org.eclipse.cdt.internal.core.settings.model.AbstractCProjectDescriptionStorage.fireLoadedEvent(AbstractCProjectDescriptionStorage.java:268) at org.eclipse.cdt.internal.core.settings.model.xml.XmlProjectDescriptionStorage.getProjectDescription(XmlProjectDescriptionStorage.java:255) at org.eclipse.cdt.internal.core.settings.model.CProjectDescriptionManager.getProjectDescriptionInternal(CProjectDescriptionManager.java:416) at org.eclipse.cdt.internal.core.settings.model.CProjectDescriptionManager.getProjectDescription(CProjectDescriptionManager.java:398) at org.eclipse.cdt.internal.core.settings.model.CProjectDescriptionManager.getProjectDescription(CProjectDescriptionManager.java:393) at org.eclipse.cdt.internal.core.settings.model.CProjectDescriptionManager.getProjectDescription(CProjectDescriptionManager.java:386) at org.eclipse.cdt.internal.core.settings.model.CProjectDescriptionManager.getProjectDescription(CProjectDescriptionManager.java:624) at org.eclipse.cdt.core.model.CoreModel.getProjectDescription(CoreModel.java:1373) at org.eclipse.cdt.projectmodel.tests.CProjectDescriptionSerializationTests.testTooManyConfigurations(CProjectDescriptionSerializationTests.java:127) at org.eclipse.test.EclipseTestRunner.run(EclipseTestRunner.java:376) at org.eclipse.test.EclipseTestRunner.run(EclipseTestRunner.java:209) at org.eclipse.test.UITestApplication$2.run(UITestApplication.java:195) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:134) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3527) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3174) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2629) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2593) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2427) at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:670) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:663) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115) at org.eclipse.test.UITestApplication.runApplication(UITestApplication.java:138) at org.eclipse.test.UITestApplication.run(UITestApplication.java:60) at org.eclipse.test.UITestApplication.start(UITestApplication.java:210) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:619) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574) at org.eclipse.equinox.launcher.Main.run(Main.java:1407) at org.eclipse.equinox.launcher.Main.main(Main.java:1383) at org.eclipse.core.launcher.Main.main(Main.java:34)
It is apparently intermittent, it's OK in build#221.
