org.netbeans.modules.deadlock.detector.Detector$DeadlockDetectedException: AWT-XAWT
   at sun.awt.X11.XClipboard$CheckChangeTimerTask.run(XClipboard.java:180)
   at sun.awt.X11.XToolkit.callTimeoutTasks(XToolkit.java:1912)
   at sun.awt.X11.XToolkit.run(XToolkit.java:552)
   at sun.awt.X11.XToolkit.run(XToolkit.java:523)
   at java.lang.Thread.run(Thread.java:745)
Caused: org.netbeans.modules.deadlock.detector.Detector$DeadlockDetectedException: AWT-EventQueue-0
Caused: org.netbeans.modules.deadlock.detector.Detector$DeadlockDetectedException: A deadlock was detected.
We suggest to restart the IDE to recover.
   at sun.misc.Unsafe.park(Unsafe.java:0)
   at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
   at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
   at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870)
   at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199)
   at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:209)
   at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285)
   at sun.awt.SunToolkit.awtLock(SunToolkit.java:253)
   at sun.awt.X11.XRootWindow.getInstance(XRootWindow.java:36)
   at sun.awt.X11.XBaseWindow.getXAWTRootWindow(XBaseWindow.java:412)
   at sun.awt.X11.XClipboard.registerClipboardViewerChecked(XClipboard.java:166)
   at sun.awt.datatransfer.SunClipboard.addFlavorListener(SunClipboard.java:377)
   at org.netbeans.NbClipboard.eventDispatched(NbClipboard.java:372)
   at java.awt.Toolkit$SelectiveAWTEventListener.eventDispatched(Toolkit.java:2425)
   at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2317)
   at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2316)
   at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2316)
   at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2316)
   at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2316)
   at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2316)
   at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2316)
   at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2316)
   at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2316)
   at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2316)
   at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2316)
   at java.awt.Toolkit.notifyAWTEventListeners(Toolkit.java:2275)
   at java.awt.Component.dispatchEventImpl(Component.java:4777)
   at java.awt.Container.dispatchEventImpl(Container.java:2292)
   at java.awt.Window.dispatchEventImpl(Window.java:2739)
   at java.awt.Component.dispatchEvent(Component.java:4703)
   at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1954)
   at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:995)
   at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:488)
   at java.awt.Component.dispatchEventImpl(Component.java:4752)
   at java.awt.Container.dispatchEventImpl(Container.java:2292)
   at java.awt.Window.dispatchEventImpl(Window.java:2739)
   at java.awt.Component.dispatchEvent(Component.java:4703)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:746)
   at java.awt.EventQueue.access$400(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:697)
   at java.awt.EventQueue$3.run(EventQueue.java:691)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86)
   at java.awt.EventQueue$4.run(EventQueue.java:719)
   at java.awt.EventQueue$4.run(EventQueue.java:717)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:716)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.SentEvent.dispatch(SentEvent.java:70)
   at java.awt.DefaultKeyboardFocusManager$DefaultKeyboardFocusManagerSentEvent.dispatch(DefaultKeyboardFocusManager.java:217)
   at java.awt.DefaultKeyboardFocusManager.sendMessage(DefaultKeyboardFocusManager.java:244)
   at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:366)
   at java.awt.Component.dispatchEventImpl(Component.java:4752)
   at java.awt.Container.dispatchEventImpl(Container.java:2292)
   at java.awt.Window.dispatchEventImpl(Window.java:2739)
   at java.awt.Component.dispatchEvent(Component.java:4703)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:746)
   at java.awt.EventQueue.access$400(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:697)
   at java.awt.EventQueue$3.run(EventQueue.java:691)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86)
   at java.awt.EventQueue$4.run(EventQueue.java:719)
   at java.awt.EventQueue$4.run(EventQueue.java:717)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:716)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.SequencedEvent.dispatch(SequencedEvent.java:128)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:744)
   at java.awt.EventQueue.access$400(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:697)
   at java.awt.EventQueue$3.run(EventQueue.java:691)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86)
   at java.awt.EventQueue$4.run(EventQueue.java:719)
   at java.awt.EventQueue$4.run(EventQueue.java:717)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:716)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)