Notes for junit5 - reproducible builds result

Version annotated: 5.3.2-1
Identified issues:
Identifier: user_in_java_jar_manifest
Description Java .jar files contain user login in the `Built-By` of `MANIFEST.MF`.
 

Our notes about issues affecting packages are stored in notes.git and are targeted at packages in Debian in 'unstable/amd64' (unless they say otherwise).