Bug 36625 "Copy Trace" Action in "Failure Trace" View enabled for empty table.
The "Copy Trace" action should probably be hidden or unavailable when there is nothing in the "Failure Trace" view. Currently the user is given the option to copy a trace of nothing to the clipboard.
org.eclipse.jdt.junit/src/org/eclipse/jdt/internal/junit/ui/TestRunnerViewPart.java
public void widgetSelected(SelectionEvent event) {
				testViewChanged(event);
			}
		});
		return tabFolder;
	}
	private void testViewChanged(SelectionEvent event) {
		for (Enumeration e= fTestRunViews.elements(); e.hasMoreElements();) {
			ITestRunView v= (ITestRunView) e.nextElement();
			if (((CTabFolder) event.widget).getSelection().getText() == v.getName()){
				v.setSelectedTest(fActiveRunView.getSelectedTestId());
				fActiveRunView= v;
				fActiveRunView.activate();
			}
		}
	}
	private SashForm createSashForm(Composite parent) {
		SashForm sashForm= new SashForm(parent, SWT.VERTICAL);		
		ViewForm top= new ViewForm(sashForm, SWT.NONE);
		CTabFolder tabFolder= createTestRunViews(top);
		tabFolder.setLayoutData(new TabFolderLayout());
		top.setContent(tabFolder);
		
		ViewForm bottom= new ViewForm(sashForm, SWT.NONE);
		ToolBar failureToolBar= new ToolBar(bottom, SWT.FLAT | SWT.WRAP);
		bottom.setTopCenter(failureToolBar);
		
		fFailureView= new FailureTraceView(bottom, this, fClipboard);
		bottom.setContent(fFailureView.getComposite()); 
		CLabel label= new CLabel(bottom, SWT.NONE);