def rerun(new_room_id = nil)
      build = branch.build_for(commit, new_room_id)
      build.run
      build
    end
def rerun(new_room_id = nil)
      build = branch.build_for(commit, new_room_id)
      build.run
      build
    end
Run a copy of itself. Typically used to force a build in case of
 temporary test failure or when auto-build is disabled.

 new_room_id - optional Campfire room String ID. Defaults to the room of the
               build being re-run.

 Returns the build copy.