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java.lang.Exception: Stack Trace	at sun.misc.Unsafe.park(Native Method)	at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)	at java.util.concurrent.FutureTask.awaitDone(FutureTask.java:426)	at java.util.concurrent.FutureTask.get(FutureTask.java:204)	at org.eclipse.mylyn.commons.net.WebUtil.execute(WebUtil.java:370)	at org.eclipse.mylyn.commons.net.WebUtil.executeInternal(WebUtil.java:384)	at org.eclipse.mylyn.commons.net.WebUtil.execute(WebUtil.java:338)	at org.eclipse.mylyn.commons.net.WebUtil.execute(WebUtil.java:312)	at org.springsource.ide.eclipse.commons.internal.core.net.HttpClientTransportService.stream(HttpClientTransportService.java:198)	at org.springsource.ide.eclipse.commons.core.preferences.StsProperties.uriStream(StsProperties.java:206)	at org.springsource.ide.eclipse.commons.core.preferences.StsProperties.readProperties(StsProperties.java:180)	at org.springsource.ide.eclipse.commons.core.preferences.StsProperties.(StsProperties.java:145)	at org.springsource.ide.eclipse.commons.core.preferences.StsProperties.getInstance(StsProperties.java:127)	at org.springsource.ide.eclipse.commons.core.preferences.StsProperties.getInstance(StsProperties.java:312)	at org.springframework.ide.eclipse.boot.core.SpringBootCore.(SpringBootCore.java:24)	at org.springframework.ide.eclipse.boot.ui.EnableDisableBootDevtools.(EnableDisableBootDevtools.java:54)	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)	at java.lang.reflect.Constructor.newInstance(Constructor.java:422)	at java.lang.Class.newInstance(Class.java:442)	at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:184)	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.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:285)	at org.eclipse.ui.internal.PluginAction.createDelegate(PluginAction.java:122)	at org.eclipse.ui.internal.PluginAction.selectionChanged(PluginAction.java:271)	at org.eclipse.ui.internal.PluginAction.(PluginAction.java:112)	at org.eclipse.ui.internal.ObjectPluginAction.(ObjectPluginAction.java:91)	at org.eclipse.ui.internal.ActionDescriptor.createAction(ActionDescriptor.java:272)	at org.eclipse.ui.internal.ActionDescriptor.(ActionDescriptor.java:176)	at org.eclipse.ui.internal.ActionDescriptor.(ActionDescriptor.java:103)	at org.eclipse.ui.internal.ObjectActionContributor.createActionDescriptor(ObjectActionContributor.java:199)	at org.eclipse.ui.internal.PluginActionBuilder.readElement(PluginActionBuilder.java:161)	at org.eclipse.ui.internal.ObjectActionContributor.readElement(ObjectActionContributor.java:275)	at org.eclipse.ui.internal.registry.RegistryReader.readElements(RegistryReader.java:145)	at org.eclipse.ui.internal.registry.RegistryReader.readElementChildren(RegistryReader.java:134)	at org.eclipse.ui.internal.ObjectActionContributor.readConfigElement(ObjectActionContributor.java:248)	at org.eclipse.ui.internal.ObjectActionContributor.isApplicableTo(ObjectActionContributor.java:214)	at org.eclipse.ui.internal.ObjectContributorManager.isApplicableTo(ObjectContributorManager.java:303)	at org.eclipse.ui.internal.ObjectActionContributorManager.contributeObjectActions(ObjectActionContributorManager.java:89)	at org.eclipse.ui.internal.PopupMenuExtender.addObjectActions(PopupMenuExtender.java:316)	at org.eclipse.ui.internal.PopupMenuExtender.menuAboutToShow(PopupMenuExtender.java:393)	at org.eclipse.jface.action.MenuManager.fireAboutToShow(MenuManager.java:333)	at org.eclipse.jface.action.MenuManager.handleAboutToShow(MenuManager.java:466)	at org.eclipse.jface.action.MenuManager.access$1(MenuManager.java:461)	at org.eclipse.jface.action.MenuManager$2.menuShown(MenuManager.java:493)	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:255)	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1137)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1118)	at org.eclipse.swt.widgets.Control.WM_INITMENUPOPUP(Control.java:5037)	at org.eclipse.swt.widgets.Control.windowProc(Control.java:4705)	at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:339)	at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java:1633)	at org.eclipse.swt.widgets.Shell.windowProc(Shell.java:2117)	at org.eclipse.swt.widgets.Display.windowProc(Display.java:5050)	at org.eclipse.swt.internal.win32.OS.TrackPopupMenu(Native Method)	at org.eclipse.swt.widgets.Menu._setVisible(Menu.java:262)	at org.eclipse.swt.widgets.Display.runPopups(Display.java:4221)	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3763)	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1127)	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018)	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:694)	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:606)	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139)	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:497)	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)	at org.eclipse.equinox.launcher.Main.run(Main.java:1515)