Our Jenkins server has a job that has been running for three days, but is not doing anything. Clicking the little X in the corner does nothing, and the console output log do
Had this same issue but there was not stack thread. We deleted the job by using this snippet in the Jenkins Console. Replace jobname and buil dnumber with yours.
def jobname = "Main/FolderName/BuildDefinition"
def buildnum = 6
Jenkins.instance.getItemByFullName(jobname).getBuildByNumber(buildnum).delete();