Not an expert, just a user of the plugin, but my expectation is once you fail, you fail.; you can't fail again. Most jobs stop/exit upon first failure. Perhaps what you are seeking to do is distinguish between failure that reports a failure (eg: java.io.IOException) and different subsequent causes. In that case, you probably want multiline regex that match the different contexts. That was our scenario. Or just match the specific second failure/cause(s).

Hi ianw, thank you for your participation.

After a build fails, the plugin uses the configured set of regular expressions to scan the log for failure causes. Multiple causes are possible. All failure causes are detected as expected, but not displayed in the list view. The build monitor, for example, displays two failure causes, the list view just one.

I have a similar use case as Pekka.  If multiple test cases fail, but I only have 1 rule that is searching for "test case failed.+)"   I only see one failure cause listed in the emails etc.  I want all the failed test cases to show in the email, so people can just look at the email and not have to go to the build.