When there is a Jenkins connection issue, the postbuildscript step will fail with the following exception:

21:30:42 ERROR: Build step failed with exception

21:30:42 java.lang.NullPointerException

21:30:42 at org.jenkinsci.plugins.postbuildscript.processor.Processor.<init>(Processor.java:51)

21:30:42 at org.jenkinsci.plugins.postbuildscript.processor.ProcessorFactory.createDefaultProcessor(ProcessorFactory.java:24)

21:30:42 at org.jenkinsci.plugins.postbuildscript.processor.ProcessorFactory.createMatrixProcessor(ProcessorFactory.java:35)

21:30:42 at org.jenkinsci.plugins.postbuildscript.PostBuildScript.createProcessor(PostBuildScript.java:213)

21:30:42 at org.jenkinsci.plugins.postbuildscript.PostBuildScript.perform(PostBuildScript.java:128)

21:30:42 at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)

21:30:42 at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:744)

21:30:42 at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:690)

21:30:42 at hudson.model.Build$BuildExecution.post2(Build.java:186)

21:30:42 at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:635)

21:30:42 at hudson.model.Run.execute(Run.java:1835)

21:30:42 at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)

21:30:42 at hudson.model.ResourceController.execute(ResourceController.java:97)

21:30:42 at hudson.model.Executor.run(Executor.java:429)

21:30:42 Build step 'Execute Scripts' marked build as failure