The main role of the plugin is to update the issues but this is not a build plugin, but a build-reference plugin. So as far as my understanding of workflow is concerned, this should not fail builds by default.

That being said, because it already does... I think we could introduce a switch "fail build when updating JIRA fails", that is on by default.

This needs to take two scenarios in consideration:

• JIRA is not/improperly configured so no update was successful
• at least one update was successful.
  This is because there is a JiraCarryOverAction now implemented.