Some Eclipse Foundation services are deprecated, or will be soon. Please ensure you've read this important communication.

Bug 356114

Summary: Exception thrown by TaskUiPlugin.start() when running plugin unit tests/debug.
Product: z_Archived Reporter: Ken Leung <plcnkl>
Component: MylynAssignee: Mylyn Inbox <mylyn-inbox>
Status: RESOLVED DUPLICATE QA Contact:
Severity: normal    
Priority: P3    
Version: unspecified   
Target Milestone: ---   
Hardware: PC   
OS: Linux   
Whiteboard:

Description Ken Leung CLA 2011-08-29 15:30:49 EDT 
Build Identifier: 

I am using Fedora 15 and
after I yum install Mylyn builds, which installs the followings:

mylyn 3.5.1.1, mylyn-commons 3.5.1.1, mylyn context 3.5.1.1, mylyn context team
3.5.1.1, mylyn versions 3.5.1.1, mylyn builds 3.5.1.2 and mylyn builds hudson
connector 3.5.1.2, I got the following stack trace when I run any eclipse
plugin unit tests.

org.osgi.framework.BundleException: Exception in
org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin.start() of bundle
org.eclipse.mylyn.tasks.ui.
    at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:734)
    at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
    at
org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
    at
org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:299)
    at
org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
    at
org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:268)
    at
org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
    at
org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:462)
    at
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:400)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:476)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:429)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:417)
    at
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
    at
org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:345)
    at
org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:229)
    at
org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1207)
    at
org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)
    at
org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
    at
org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
    at
org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
    at
org.eclipse.ui.internal.util.Util.safeLoadExecutableExtension(Util.java:879)
    at
org.eclipse.ui.internal.menus.DynamicToolBarContributionItem.createContributionItem(DynamicToolBarContributionItem.java:183)
    at
org.eclipse.ui.internal.menus.DynamicToolBarContributionItem.getContributionItem(DynamicToolBarContributionItem.java:176)
    at
org.eclipse.ui.internal.menus.DynamicToolBarContributionItem.createControl(DynamicToolBarContributionItem.java:278)
    at
org.eclipse.jface.action.ControlContribution.fill(ControlContribution.java:97)
    at org.eclipse.jface.action.ToolBarManager.update(ToolBarManager.java:353)
    at
org.eclipse.jface.action.ToolBarManager.createControl(ToolBarManager.java:111)
    at
org.eclipse.ui.internal.menus.TrimContributionManager$ToolBarTrimProxy.dock(TrimContributionManager.java:88)
    at
org.eclipse.ui.internal.menus.TrimContributionManager.update(TrimContributionManager.java:265)
    at
org.eclipse.ui.internal.WorkbenchWindow.updateLayoutDataForContents(WorkbenchWindow.java:3867)
    at
org.eclipse.ui.internal.WorkbenchWindow.setLayoutDataForContents(WorkbenchWindow.java:3878)
    at
org.eclipse.ui.internal.WorkbenchWindow.createDefaultContents(WorkbenchWindow.java:1150)
    at
org.eclipse.ui.internal.WorkbenchWindowConfigurer.createDefaultContents(WorkbenchWindowConfigurer.java:623)
    at
org.eclipse.ui.application.WorkbenchWindowAdvisor.createWindowContents(WorkbenchWindowAdvisor.java:300)
    at
org.eclipse.ui.internal.WorkbenchWindow.createContents(WorkbenchWindow.java:1036)
    at org.eclipse.jface.window.Window.create(Window.java:431)
    at
org.eclipse.ui.internal.Workbench$22.runWithException(Workbench.java:1211)
    at
org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at
org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3563)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3212)
    at
org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:803)
    at
org.eclipse.ui.internal.Workbench$33.runWithException(Workbench.java:1595)
    at
org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
    at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:180)
    at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150)
    at org.eclipse.swt.widgets.Display.syncExec(Display.java:4330)
    at
org.eclipse.ui.internal.StartupThreading.runWithoutExceptions(StartupThreading.java:94)
    at org.eclipse.ui.internal.Workbench.init(Workbench.java:1590)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2623)
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494)
    at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674)
    at
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    at
org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
    at
org.eclipse.pde.internal.junit.runtime.NonUIThreadTestApplication.runApp(NonUIThreadTestApplication.java:54)
    at
org.eclipse.pde.internal.junit.runtime.UITestApplication.runApp(UITestApplication.java:41)
    at
org.eclipse.pde.internal.junit.runtime.NonUIThreadTestApplication.start(NonUIThreadTestApplication.java:48)
    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:344)
    at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:616)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1386)
Caused by: java.lang.NoClassDefFoundError:
org/apache/commons/logging/LogFactory
    at org.apache.commons.httpclient.params.DefaultHttpParams.<clinit>(Unknown
Source)
    at org.eclipse.mylyn.commons.net.WebUtil.<clinit>(WebUtil.java:153)
    at
org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin.start(TasksUiPlugin.java:529)
    at
org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
    at java.security.AccessController.doPrivileged(Native Method)
    at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
    ... 74 more
Caused by: java.lang.ClassNotFoundException:
org.apache.commons.logging.LogFactory
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:467)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:429)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:417)
    at
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
    ... 80 more
Root exception:
java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
    at org.apache.commons.httpclient.params.DefaultHttpParams.<clinit>(Unknown
Source)
    at org.eclipse.mylyn.commons.net.WebUtil.<clinit>(WebUtil.java:153)
    at
org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin.start(TasksUiPlugin.java:529)
    at
org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
    at java.security.AccessController.doPrivileged(Native Method)
    at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
    at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
    at
org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
    at
org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:299)
    at
org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
    at
org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:268)
    at
org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
    at
org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:462)
    at
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:400)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:476)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:429)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:417)
    at
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
    at
org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:345)
    at
org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:229)
    at
org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1207)
    at
org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)
    at
org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
    at
org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
    at
org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
    at
org.eclipse.ui.internal.util.Util.safeLoadExecutableExtension(Util.java:879)
    at
org.eclipse.ui.internal.menus.DynamicToolBarContributionItem.createContributionItem(DynamicToolBarContributionItem.java:183)
    at
org.eclipse.ui.internal.menus.DynamicToolBarContributionItem.getContributionItem(DynamicToolBarContributionItem.java:176)
    at
org.eclipse.ui.internal.menus.DynamicToolBarContributionItem.createControl(DynamicToolBarContributionItem.java:278)
    at
org.eclipse.jface.action.ControlContribution.fill(ControlContribution.java:97)
    at org.eclipse.jface.action.ToolBarManager.update(ToolBarManager.java:353)
    at
org.eclipse.jface.action.ToolBarManager.createControl(ToolBarManager.java:111)
    at
org.eclipse.ui.internal.menus.TrimContributionManager$ToolBarTrimProxy.dock(TrimContributionManager.java:88)
    at
org.eclipse.ui.internal.menus.TrimContributionManager.update(TrimContributionManager.java:265)
    at
org.eclipse.ui.internal.WorkbenchWindow.updateLayoutDataForContents(WorkbenchWindow.java:3867)
    at
org.eclipse.ui.internal.WorkbenchWindow.setLayoutDataForContents(WorkbenchWindow.java:3878)
    at
org.eclipse.ui.internal.WorkbenchWindow.createDefaultContents(WorkbenchWindow.java:1150)
    at
org.eclipse.ui.internal.WorkbenchWindowConfigurer.createDefaultContents(WorkbenchWindowConfigurer.java:623)
    at
org.eclipse.ui.application.WorkbenchWindowAdvisor.createWindowContents(WorkbenchWindowAdvisor.java:300)
    at
org.eclipse.ui.internal.WorkbenchWindow.createContents(WorkbenchWindow.java:1036)
    at org.eclipse.jface.window.Window.create(Window.java:431)
    at
org.eclipse.ui.internal.Workbench$22.runWithException(Workbench.java:1211)
    at
org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at
org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3563)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3212)
    at
org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:803)
    at
org.eclipse.ui.internal.Workbench$33.runWithException(Workbench.java:1595)
    at
org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
    at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:180)
    at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150)
    at org.eclipse.swt.widgets.Display.syncExec(Display.java:4330)
    at
org.eclipse.ui.internal.StartupThreading.runWithoutExceptions(StartupThreading.java:94)
    at org.eclipse.ui.internal.Workbench.init(Workbench.java:1590)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2623)
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494)
    at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674)
    at
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    at
org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
    at
org.eclipse.pde.internal.junit.runtime.NonUIThreadTestApplication.runApp(NonUIThreadTestApplication.java:54)
    at
org.eclipse.pde.internal.junit.runtime.UITestApplication.runApp(UITestApplication.java:41)
    at
org.eclipse.pde.internal.junit.runtime.NonUIThreadTestApplication.start(NonUIThreadTestApplication.java:48)
    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:344)
    at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:616)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1386)
Caused by: java.lang.ClassNotFoundException:
org.apache.commons.logging.LogFactory
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:467)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:429)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:417)
    at
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
    ... 80 more

!ENTRY org.eclipse.ui 4 4 2011-08-29 15:16:53.761
!MESSAGE Class load Failure:
'org.eclipse.mylyn.internal.tasks.ui.TaskTrimWidget'

!ENTRY org.eclipse.ui 4 0 2011-08-29 15:16:53.761
!MESSAGE Class load Failure:
'org.eclipse.mylyn.internal.tasks.ui.TaskTrimWidget'
!STACK 1
org.eclipse.core.runtime.CoreException: Plug-in org.eclipse.mylyn.tasks.ui was
unable to load class org.eclipse.mylyn.internal.tasks.ui.TaskTrimWidget.
    at
org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.throwException(RegistryStrategyOSGI.java:194)
    at
org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:176)
    at
org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
    at
org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
    at
org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
    at
org.eclipse.ui.internal.util.Util.safeLoadExecutableExtension(Util.java:879)
    at
org.eclipse.ui.internal.menus.DynamicToolBarContributionItem.createContributionItem(DynamicToolBarContributionItem.java:183)
    at
org.eclipse.ui.internal.menus.DynamicToolBarContributionItem.getContributionItem(DynamicToolBarContributionItem.java:176)
    at
org.eclipse.ui.internal.menus.DynamicToolBarContributionItem.createControl(DynamicToolBarContributionItem.java:278)
    at
org.eclipse.jface.action.ControlContribution.fill(ControlContribution.java:97)
    at org.eclipse.jface.action.ToolBarManager.update(ToolBarManager.java:353)
    at
org.eclipse.jface.action.ToolBarManager.createControl(ToolBarManager.java:111)
    at
org.eclipse.ui.internal.menus.TrimContributionManager$ToolBarTrimProxy.dock(TrimContributionManager.java:88)
    at
org.eclipse.ui.internal.menus.TrimContributionManager.update(TrimContributionManager.java:265)
    at
org.eclipse.ui.internal.WorkbenchWindow.updateLayoutDataForContents(WorkbenchWindow.java:3867)
    at
org.eclipse.ui.internal.WorkbenchWindow.setLayoutDataForContents(WorkbenchWindow.java:3878)
    at
org.eclipse.ui.internal.WorkbenchWindow.createDefaultContents(WorkbenchWindow.java:1150)
    at
org.eclipse.ui.internal.WorkbenchWindowConfigurer.createDefaultContents(WorkbenchWindowConfigurer.java:623)
    at
org.eclipse.ui.application.WorkbenchWindowAdvisor.createWindowContents(WorkbenchWindowAdvisor.java:300)
    at
org.eclipse.ui.internal.WorkbenchWindow.createContents(WorkbenchWindow.java:1036)
    at org.eclipse.jface.window.Window.create(Window.java:431)
    at
org.eclipse.ui.internal.Workbench$22.runWithException(Workbench.java:1211)
    at
org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at
org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3563)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3212)
    at
org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:803)
    at
org.eclipse.ui.internal.Workbench$33.runWithException(Workbench.java:1595)
    at
org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
    at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:180)
    at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150)
    at org.eclipse.swt.widgets.Display.syncExec(Display.java:4330)
    at
org.eclipse.ui.internal.StartupThreading.runWithoutExceptions(StartupThreading.java:94)
    at org.eclipse.ui.internal.Workbench.init(Workbench.java:1590)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2623)
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494)
    at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674)
    at
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    at
org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
    at
org.eclipse.pde.internal.junit.runtime.NonUIThreadTestApplication.runApp(NonUIThreadTestApplication.java:54)
    at
org.eclipse.pde.internal.junit.runtime.UITestApplication.runApp(UITestApplication.java:41)
    at
org.eclipse.pde.internal.junit.runtime.NonUIThreadTestApplication.start(NonUIThreadTestApplication.java:48)
    at
org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
    at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
    at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
    at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:616)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1386)
Caused by:
org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter$TerminatingClassNotFoundException:
An error occurred while automatically activating bundle
org.eclipse.mylyn.tasks.ui (289).
    at
org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:122)
    at
org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:462)
    at
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:400)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:476)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:429)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:417)
    at
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
    at
org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:345)
    at
org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:229)
    at
org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1207)
    at
org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)
    ... 56 more
Caused by: org.osgi.framework.BundleException: Exception in
org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin.start() of bundle
org.eclipse.mylyn.tasks.ui.
    at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:734)
    at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
    at
org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
    at
org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:299)
    at
org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
    at
org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:268)
    at
org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
    ... 68 more
Caused by: java.lang.NoClassDefFoundError:
org/apache/commons/logging/LogFactory
    at org.apache.commons.httpclient.params.DefaultHttpParams.<clinit>(Unknown
Source)
    at org.eclipse.mylyn.commons.net.WebUtil.<clinit>(WebUtil.java:153)
    at
org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin.start(TasksUiPlugin.java:529)
    at
org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
    at java.security.AccessController.doPrivileged(Native Method)
    at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
    ... 74 more
Caused by: java.lang.ClassNotFoundException:
org.apache.commons.logging.LogFactory
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:467)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:429)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:417)
    at
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
    ... 80 more
!SUBENTRY 1 org.eclipse.equinox.registry 4 1 2011-08-29 15:16:53.783
!MESSAGE Plug-in org.eclipse.mylyn.tasks.ui was unable to load class
org.eclipse.mylyn.internal.tasks.ui.TaskTrimWidget.
!STACK 0
org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter$TerminatingClassNotFoundException:
An error occurred while automatically activating bundle
org.eclipse.mylyn.tasks.ui (289).
    at
org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:122)
    at
org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:462)
    at
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:400)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:476)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:429)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:417)
    at
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
    at
org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:345)
    at
org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:229)
    at
org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1207)
    at
org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)
    at
org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
    at
org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
    at
org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
    at
org.eclipse.ui.internal.util.Util.safeLoadExecutableExtension(Util.java:879)
    at
org.eclipse.ui.internal.menus.DynamicToolBarContributionItem.createContributionItem(DynamicToolBarContributionItem.java:183)
    at
org.eclipse.ui.internal.menus.DynamicToolBarContributionItem.getContributionItem(DynamicToolBarContributionItem.java:176)
    at
org.eclipse.ui.internal.menus.DynamicToolBarContributionItem.createControl(DynamicToolBarContributionItem.java:278)
    at
org.eclipse.jface.action.ControlContribution.fill(ControlContribution.java:97)
    at org.eclipse.jface.action.ToolBarManager.update(ToolBarManager.java:353)
    at
org.eclipse.jface.action.ToolBarManager.createControl(ToolBarManager.java:111)
    at
org.eclipse.ui.internal.menus.TrimContributionManager$ToolBarTrimProxy.dock(TrimContributionManager.java:88)
    at
org.eclipse.ui.internal.menus.TrimContributionManager.update(TrimContributionManager.java:265)
    at
org.eclipse.ui.internal.WorkbenchWindow.updateLayoutDataForContents(WorkbenchWindow.java:3867)
    at
org.eclipse.ui.internal.WorkbenchWindow.setLayoutDataForContents(WorkbenchWindow.java:3878)
    at
org.eclipse.ui.internal.WorkbenchWindow.createDefaultContents(WorkbenchWindow.java:1150)
    at
org.eclipse.ui.internal.WorkbenchWindowConfigurer.createDefaultContents(WorkbenchWindowConfigurer.java:623)
    at
org.eclipse.ui.application.WorkbenchWindowAdvisor.createWindowContents(WorkbenchWindowAdvisor.java:300)
    at
org.eclipse.ui.internal.WorkbenchWindow.createContents(WorkbenchWindow.java:1036)
    at org.eclipse.jface.window.Window.create(Window.java:431)
    at
org.eclipse.ui.internal.Workbench$22.runWithException(Workbench.java:1211)
    at
org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at
org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3563)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3212)
    at
org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:803)
    at
org.eclipse.ui.internal.Workbench$33.runWithException(Workbench.java:1595)
    at
org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
    at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:180)
    at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150)
    at org.eclipse.swt.widgets.Display.syncExec(Display.java:4330)
    at
org.eclipse.ui.internal.StartupThreading.runWithoutExceptions(StartupThreading.java:94)
    at org.eclipse.ui.internal.Workbench.init(Workbench.java:1590)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2623)
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494)
    at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674)
    at
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    at
org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
    at
org.eclipse.pde.internal.junit.runtime.NonUIThreadTestApplication.runApp(NonUIThreadTestApplication.java:54)
    at
org.eclipse.pde.internal.junit.runtime.UITestApplication.runApp(UITestApplication.java:41)
    at
org.eclipse.pde.internal.junit.runtime.NonUIThreadTestApplication.start(NonUIThreadTestApplication.java:48)
    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:344)
    at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:616)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1386)
Caused by: org.osgi.framework.BundleException: Exception in
org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin.start() of bundle
org.eclipse.mylyn.tasks.ui.
    at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:734)
    at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
    at
org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
    at
org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:299)
    at
org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
    at
org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:268)
    at
org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
    ... 68 more
Caused by: java.lang.NoClassDefFoundError:
org/apache/commons/logging/LogFactory
    at org.apache.commons.httpclient.params.DefaultHttpParams.<clinit>(Unknown
Source)
    at org.eclipse.mylyn.commons.net.WebUtil.<clinit>(WebUtil.java:153)
    at
org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin.start(TasksUiPlugin.java:529)
    at
org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
    at java.security.AccessController.doPrivileged(Native Method)
    at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
    ... 74 more
Caused by: java.lang.ClassNotFoundException:
org.apache.commons.logging.LogFactory
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:467)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:429)
    at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:417)
    at
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
    ... 80 more

!ENTRY org.eclipse.ui 4 0 2011-08-29 15:16:53.785
!MESSAGE Unhandled event loop exception
!STACK 0
java.lang.NullPointerException
    at
org.eclipse.jface.action.ControlContribution.computeWidth(ControlContribution.java:54)
    at
org.eclipse.jface.action.ControlContribution.fill(ControlContribution.java:100)
    at org.eclipse.jface.action.ToolBarManager.update(ToolBarManager.java:353)
    at
org.eclipse.jface.action.ToolBarManager.createControl(ToolBarManager.java:111)
    at
org.eclipse.ui.internal.menus.TrimContributionManager$ToolBarTrimProxy.dock(TrimContributionManager.java:88)
    at
org.eclipse.ui.internal.menus.TrimContributionManager.update(TrimContributionManager.java:265)
    at
org.eclipse.ui.internal.WorkbenchWindow.updateLayoutDataForContents(WorkbenchWindow.java:3867)
    at
org.eclipse.ui.internal.WorkbenchWindow.setLayoutDataForContents(WorkbenchWindow.java:3878)
    at
org.eclipse.ui.internal.WorkbenchWindow.createDefaultContents(WorkbenchWindow.java:1150)
    at
org.eclipse.ui.internal.WorkbenchWindowConfigurer.createDefaultContents(WorkbenchWindowConfigurer.java:623)
    at
org.eclipse.ui.application.WorkbenchWindowAdvisor.createWindowContents(WorkbenchWindowAdvisor.java:300)
    at
org.eclipse.ui.internal.WorkbenchWindow.createContents(WorkbenchWindow.java:1036)
    at org.eclipse.jface.window.Window.create(Window.java:431)
    at
org.eclipse.ui.internal.Workbench$22.runWithException(Workbench.java:1211)
    at
org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at
org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3563)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3212)
    at
org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:803)
    at
org.eclipse.ui.internal.Workbench$33.runWithException(Workbench.java:1595)
    at
org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
    at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:180)
    at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150)
    at org.eclipse.swt.widgets.Display.syncExec(Display.java:4330)
    at
org.eclipse.ui.internal.StartupThreading.runWithoutExceptions(StartupThreading.java:94)
    at org.eclipse.ui.internal.Workbench.init(Workbench.java:1590)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2623)
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494)
    at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674)
    at
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    at
org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
    at
org.eclipse.pde.internal.junit.runtime.NonUIThreadTestApplication.runApp(NonUIThreadTestApplication.java:54)
    at
org.eclipse.pde.internal.junit.runtime.UITestApplication.runApp(UITestApplication.java:41)
    at
org.eclipse.pde.internal.junit.runtime.NonUIThreadTestApplication.start(NonUIThreadTestApplication.java:48)
    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:344)
    at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:616)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1386)

Reproducible: Always

Steps to Reproduce:
1. yum install eclipse-mylyn-builds*
2. run eclipse.
3. run eclipse plugin unit test/debug.
Comment 1 Steffen Pingel CLA 2011-08-29 15:41:00 EDT 
.

*** This bug has been marked as a duplicate of bug 356113 ***