Ce qui est dommage c’est que le plugin n’indique pas quel est l’erreur … il y a seulement une exception sur un pointeur NULL. ( https://wiki.jenkins.io/display/JENKINS/Confluence+Publisher+Plugin )

ERROR: Build step failed with exception
java.lang.NullPointerException
       at rocks.inspectit.releaseplugin.releasenotes.ConfluenceReleaseNotesPublisher.perform(ConfluenceReleaseNotesPublisher.java:99)
       at hudson.tasks.BuildStepMonitor$3.perform(BuildStepMonitor.java:45)
       at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:741)
       at hudson.model.Build$BuildExecution.build(Build.java:206)
       at hudson.model.Build$BuildExecution.doRun(Build.java:163)
       at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:504)
       at hudson.model.Run.execute(Run.java:1818)
       at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
       at hudson.model.ResourceController.execute(ResourceController.java:97)
       at hudson.model.Executor.run(Executor.java:429)
Build step 'Publish Release Notes on Confluence' marked build as failure

Misère.