FYI Andrew Bayer said that its likely to break a few tests due to syntax changes.
Skipped stages should show up as unbuilt
Declarative plugin adds extra step for failed step but doesn't mark it as error
Vivek Pandey can you let Josh McDonald know when this lands on master? he has JENKINS-39871 assigned to him
James Dumay sure, but this is not the right ticket for JENKINS-39871. skipped stages are handled in TagAction related ticket: https://issues.jenkins-ci.org/browse/JENKINS-38330.