build failing with "FATAL: Command "reset --hard" returned status code 128:"

[Alissa Bonas]

http://jenkins.ovirt.org/job/ovirt_engine_master_find_bugs_gerrit/3842/console


"If no other git process is currently running, this probably means a
git process crashed in this repository earlier. Make sure no other git
process is running and remove the file manually to continue.

hudson.plugins.git.GitException: Command "reset --hard" returned status code 128:
stdout: 
stderr: fatal: Unable to create '/home/jenkins/workspace/ovirt_engine_master_find_bugs_gerrit at 2/ovirt-engine/.git/index.lock': File exists.

If no other git process is currently running, this probably means a
git process crashed in this repository earlier. Make sure no other git
process is running and remove the file manually to continue.

	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandIn(CliGitAPIImpl.java:940)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandIn(CliGitAPIImpl.java:921)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommand(CliGitAPIImpl.java:865)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.reset(CliGitAPIImpl.java:221)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.clean(CliGitAPIImpl.java:334)
	at hudson.plugins.git.GitAPI.clean(GitAPI.java:251)
	at hudson.plugins.git.GitSCM$4.invoke(GitSCM.java:1228)
	at hudson.plugins.git.GitSCM$4.invoke(GitSCM.java:1211)
	at hudson.FilePath$FileCallableWrapper.call(FilePath.java:2394)
	at hudson.remoting.UserRequest.perform(UserRequest.java:118)
	at hudson.remoting.UserRequest.perform(UserRequest.java:48)
	at hudson.remoting.Request$2.run(Request.java:326)
	at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at hudson.remoting.Engine$1$1.run(Engine.java:63)
	at java.lang.Thread.run(Thread.java:744)"