Thanks for the report. I have some questions and a few notes. It seems the build requires java9. Also I'm not able to build your project (feature branch) - I get a lot of exceptions during Task :spotbugsMain when executing ./gradlew build. Also I cannot reproduce the problem on master branch.

WRT Windows service log - I don't know anything how this works but th stack does not contain anything Weld-related. So I'd guess it's a general classloading problem.
WRT Windows uberjar log - it's only a debug message so it should not affect/break your application. In other words - it's harmless. Still, it's really weird that Weld classes are scanned even if you try to exclude them here.