EAP compatibility test sometimes fails on runtime search dialog

Error Message

No matching widget found with Matcher matching when all matchers match: [Matcher matching widget with the same type as or type extending class org.eclipse.swt.widgets.Label, Matcher matching widget which text matches: "Searching runtimes is finished."]
class org.eclipse.swt.widgets.Shell[shell: 'Searching for runtimes...'] with text 'Searching for runtimes...'
 class org.eclipse.swt.widgets.Composite[shell: 'Searching for runtimes...']
  class org.eclipse.swt.widgets.Label[shell: 'Searching for runtimes...'] with text ''
  class org.eclipse.swt.widgets.Label[shell: 'Searching for runtimes...'] with label '' with text 'Searching /home/hudson/hudson_workspace/works...bot.itests/target/requirements/jboss-eap-7.1'
  class org.eclipse.swt.widgets.Tree[shell: 'Searching for runtimes...'] with label 'Searching /home/hudson/hudson_workspace/works...bot.itests/target/requirements/jboss-eap-7.1'
 class org.eclipse.swt.widgets.Label[shell: 'Searching for runtimes...'] with label 'Searching /home/hudson/hudson_workspace/works...bot.itests/target/requirements/jboss-eap-7.1' with text ''
 class org.eclipse.jface.dialogs.ProgressIndicator[shell: 'Searching for runtimes...'] with label ''
  class org.eclipse.swt.widgets.ProgressBar[shell: 'Searching for runtimes...']
  class org.eclipse.swt.widgets.ProgressBar[shell: 'Searching for runtimes...']
 class org.eclipse.swt.widgets.Button[shell: 'Searching for runtimes...'] with label '' with text 'Hide already created runtimes'
 class org.eclipse.swt.widgets.Button[shell: 'Searching for runtimes...'] with label '' with text 'Add runtime path to list of paths searchable on startup'
 class org.eclipse.jface.dialogs.ProgressIndicator[shell: 'Searching for runtimes...'] with label ''
  class org.eclipse.swt.widgets.ProgressBar[shell: 'Searching for runtimes...'] with label ''
  class org.eclipse.swt.widgets.ProgressBar[shell: 'Searching for runtimes...']
 class org.eclipse.swt.widgets.Label[shell: 'Searching for runtimes...'] with label '' with text ''
 class org.eclipse.swt.widgets.Composite[shell: 'Searching for runtimes...'] with label ''
  class org.eclipse.swt.widgets.Button[shell: 'Searching for runtimes...'] with label '' with text 'OK'
  class org.eclipse.swt.widgets.Button[shell: 'Searching for runtimes...'] with label '' with text 'Select All'
  class org.eclipse.swt.widgets.Button[shell: 'Searching for runtimes...'] with label '' with text 'Deselect All'
  class org.eclipse.swt.widgets.Button[shell: 'Searching for runtimes...'] with label '' with text 'Cancel'
Stacktrace

org.eclipse.reddeer.core.exception.CoreLayerException: No matching widget found with Matcher matching when all matchers match: [Matcher matching widget with the same type as or type extending class org.eclipse.swt.widgets.Label, Matcher matching widget which text matches: "Searching runtimes is finished."]
class org.eclipse.swt.widgets.Shell[shell: 'Searching for runtimes...'] with text 'Searching for runtimes...'
	class org.eclipse.swt.widgets.Composite[shell: 'Searching for runtimes...']
		class org.eclipse.swt.widgets.Label[shell: 'Searching for runtimes...'] with text ''
		class org.eclipse.swt.widgets.Label[shell: 'Searching for runtimes...'] with label '' with text 'Searching /home/hudson/hudson_workspace/works...bot.itests/target/requirements/jboss-eap-7.1'
		class org.eclipse.swt.widgets.Tree[shell: 'Searching for runtimes...'] with label 'Searching /home/hudson/hudson_workspace/works...bot.itests/target/requirements/jboss-eap-7.1'
	class org.eclipse.swt.widgets.Label[shell: 'Searching for runtimes...'] with label 'Searching /home/hudson/hudson_workspace/works...bot.itests/target/requirements/jboss-eap-7.1' with text ''
	class org.eclipse.jface.dialogs.ProgressIndicator[shell: 'Searching for runtimes...'] with label ''
		class org.eclipse.swt.widgets.ProgressBar[shell: 'Searching for runtimes...']
		class org.eclipse.swt.widgets.ProgressBar[shell: 'Searching for runtimes...']
	class org.eclipse.swt.widgets.Button[shell: 'Searching for runtimes...'] with label '' with text 'Hide already created runtimes'
	class org.eclipse.swt.widgets.Button[shell: 'Searching for runtimes...'] with label '' with text 'Add runtime path to list of paths searchable on startup'
	class org.eclipse.jface.dialogs.ProgressIndicator[shell: 'Searching for runtimes...'] with label ''
		class org.eclipse.swt.widgets.ProgressBar[shell: 'Searching for runtimes...'] with label ''
		class org.eclipse.swt.widgets.ProgressBar[shell: 'Searching for runtimes...']
	class org.eclipse.swt.widgets.Label[shell: 'Searching for runtimes...'] with label '' with text ''
	class org.eclipse.swt.widgets.Composite[shell: 'Searching for runtimes...'] with label ''
		class org.eclipse.swt.widgets.Button[shell: 'Searching for runtimes...'] with label '' with text 'OK'
		class org.eclipse.swt.widgets.Button[shell: 'Searching for runtimes...'] with label '' with text 'Select All'
		class org.eclipse.swt.widgets.Button[shell: 'Searching for runtimes...'] with label '' with text 'Deselect All'
		class org.eclipse.swt.widgets.Button[shell: 'Searching for runtimes...'] with label '' with text 'Cancel'

	at org.eclipse.reddeer.common.wait.WaitUntil.throwWaitTimeOutException(WaitUntil.java:122)
	at org.eclipse.reddeer.common.wait.AbstractWait.timeoutExceeded(AbstractWait.java:207)
	at org.eclipse.reddeer.common.wait.AbstractWait.wait(AbstractWait.java:151)
	at org.eclipse.reddeer.common.wait.AbstractWait.<init>(AbstractWait.java:132)
	at org.eclipse.reddeer.common.wait.AbstractWait.<init>(AbstractWait.java:97)
	at org.eclipse.reddeer.common.wait.AbstractWait.<init>(AbstractWait.java:64)
	at org.eclipse.reddeer.common.wait.WaitUntil.<init>(WaitUntil.java:50)
	at org.eclipse.reddeer.core.lookup.WidgetLookup.activeWidget(WidgetLookup.java:109)
	at org.eclipse.reddeer.core.lookup.WidgetLookup.activeWidget(WidgetLookup.java:87)
	at org.eclipse.reddeer.swt.widgets.AbstractWidget.<init>(AbstractWidget.java:76)
	at org.eclipse.reddeer.swt.widgets.AbstractControl.<init>(AbstractControl.java:38)
	at org.eclipse.reddeer.swt.impl.label.AbstractLabel.<init>(AbstractLabel.java:24)
	at org.eclipse.reddeer.swt.impl.label.DefaultLabel.<init>(DefaultLabel.java:102)
	at org.eclipse.reddeer.swt.impl.label.DefaultLabel.<init>(DefaultLabel.java:62)
	at org.eclipse.reddeer.swt.impl.label.DefaultLabel.<init>(DefaultLabel.java:52)
	at org.jboss.tools.as.ui.bot.itests.reddeer.ui.RuntimeDetectionPreferencePage$RuntimeSearchedFinished.test(RuntimeDetectionPreferencePage.java:70)
	at org.eclipse.reddeer.common.wait.WaitUntil.stopWaiting(WaitUntil.java:103)
	at org.eclipse.reddeer.common.wait.AbstractWait.wait(AbstractWait.java:147)
	at org.eclipse.reddeer.common.wait.AbstractWait.<init>(AbstractWait.java:132)
	at org.eclipse.reddeer.common.wait.AbstractWait.<init>(AbstractWait.java:97)
	at org.eclipse.reddeer.common.wait.AbstractWait.<init>(AbstractWait.java:64)
	at org.eclipse.reddeer.common.wait.WaitUntil.<init>(WaitUntil.java:50)
	at org.jboss.tools.as.ui.bot.itests.reddeer.ui.RuntimeDetectionPreferencePage.search(RuntimeDetectionPreferencePage.java:61)
	at org.jboss.tools.as.ui.bot.itests.reddeer.util.RuntimeDetectionUtility.addPath(RuntimeDetectionUtility.java:37)
	at org.jboss.tools.as.ui.bot.itests.reddeer.util.DetectRuntimeTemplate.detectRuntime(DetectRuntimeTemplate.java:37)
	at org.jboss.tools.as.ui.bot.itests.server.SingleServerRuntimeTest.checkCountAndGetServerName(SingleServerRuntimeTest.java:60)
	at org.jboss.tools.as.ui.bot.itests.server.SingleServerRuntimeTest.detect(SingleServerRuntimeTest.java:56)