Which Warnings Categories? How Many in Each?

        $ report-build-warnings /tmp/make-output/9d9546e0fa.freebsd.clang60.make.output.txt.gz
        File:  /tmp/make-output/9d9546e0fa.freebsd.clang60.make.output.txt.gz

          Wdeprecated-declarations                   6
          Wunused-variable                           2

• We've picked up 6 warnings in a new category