jenkins: No such property: WORKSPACE for class: groovy.lang.Binding

Tracking ticket for a strange failure logged by Serkant(s) job.
No obvious sources in the logs.
Gerrit server was not under load during the event so would have been able to serve up files.
 
 hi, could you please check why this is failed after submitting the change https://gerrit.opencord.org/c/voltctl/+/33315
 
 
  the source can be found here:https://jenkins.opencord.org/job/verify_voltctl_sanity-test/409/
07:57:34 Still waiting to schedule task
07:57:34 All nodes of label 'ubuntu18.04-basebuild-4c-8g' are offline
08:00:39 Aborted by new patch set.
08:00:39 [Pipeline] // node
08:00:39 Aborted by new patch set.
 
groovy.lang.MissingPropertyException: No such property: WORKSPACE for class: groovy.lang.Binding
10:02
Strange, WORKSPACE= is a jenkins-ism that usually refers to the build directory.
10:03
I'll have to check on it, from a superficial review of the logs it is not clear if this may be a timeout due to nodes being unavailable or something happened to the build directory (for ex say a disk filled during job setup).  I'm going to re-trigger the job just to see if the behavior is repeatable.