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
I had also the same problem and fix it via Jenkins Console.
Go to "Manage Jenkins" > "Script Console" and run a script:
Jenkins .instance.getItemByFullName("JobName")
.getBuildByNumber(JobNumber)
.finish(hudson.model.Result.ABORTED, new java.io.IOException("Aborting build"));
You'll have just specify your JobName and JobNumber.