In Warnings Plugin 5.0 beta:  I have a multi-configuration freestyle job that builds on 3 nodes, each having a different version of gcc.  Currently, 1 node reports 4 compiler warnings, the other 2 nodes report 0 warnings.  I have changed this job to use the new Warnings plugin.  Here is a screenshot of the report page for the job:

As you can see, the History shows 0 warnings but the details shows 4 warnings.  This is inconsistent.  This is my main issue.

Also, there's no indication of which node the warnings were detected on. But that was also true with the old plugin.