don't build report object of irrelevant messages

Signed-off-by: Sebastian Schüpbach <sebastian.schuepbach@unibas.ch>
3 jobs for master in 5 minutes and 26 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed test-sbt #57170
mbr

00:02:40

 
  Build
passed assembly-sbt #57171
mbr

00:02:21

 
  Publish
passed build-latest-image #57172
mbr

00:00:25