[jbosstools-builds] Build failed in Jenkins: jbosstools-server_master #674

[ci-builds at redhat.com]

See <http://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/jbosstools-server_master/674/>

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Started by build flow jbosstools-buildflow_master#120
[EnvInject] - Loading node environment variables.
Building remotely on dev223-virt4 in workspace <http://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/jbosstools-server_master/ws/>
Cloning the remote Git repository
Cloning repository git://github.com/jbosstools/jbosstools-server.git
Fetching upstream changes from git://github.com/jbosstools/jbosstools-server.git
Fetching upstream changes from git://github.com/jbosstools/jbosstools-server.git
Checking out Revision 196602c3b22a625e54d693ca3bba3bf1532d24bb (origin/master)
Deleting old artifacts from #672
Xvfb starting$ Xvfb :1 -screen 0 1024x758x16 -fbdir /mnt/hudson_workspace/2015-02-08_01-51-415988677722779507783xvfb
FATAL: Cannot run program "Xvfb": java.io.IOException: error=2, No such file or directory
java.io.IOException: Cannot run program "Xvfb": java.io.IOException: error=2, No such file or directory
	at java.lang.ProcessBuilder.start(ProcessBuilder.java:470)
	at hudson.Proc$LocalProc.<init>(Proc.java:244)
	at hudson.Proc$LocalProc.<init>(Proc.java:216)
	at hudson.Launcher$LocalLauncher.launch(Launcher.java:773)
	at hudson.Launcher$ProcStarter.start(Launcher.java:353)
	at hudson.Launcher$RemoteLaunchCallable.call(Launcher.java:998)
	at hudson.Launcher$RemoteLaunchCallable.call(Launcher.java:965)
	at hudson.remoting.UserRequest.perform(UserRequest.java:118)
	at hudson.remoting.UserRequest.perform(UserRequest.java:48)
	at hudson.remoting.Request$2.run(Request.java:328)
	at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
	at hudson.remoting.Engine$1$1.run(Engine.java:63)
	at java.lang.Thread.run(Thread.java:662)
Caused by: java.io.IOException: java.io.IOException: error=2, No such file or directory
	at java.lang.UNIXProcess.<init>(UNIXProcess.java:148)
	at java.lang.ProcessImpl.start(ProcessImpl.java:65)
	at java.lang.ProcessBuilder.start(ProcessBuilder.java:452)
	... 16 more