$build->update({finished => 1, busy => 0, timestamp => time});
        $c->model('DB::BuildResultInfo')->create(
            { id => $build->id
            , iscachedbuild => 0
            , buildstatus => 4 # = cancelled

        $build->update(
            { finished => 1, busy => 0, timestamp => time
            , iscachedbuild => 0, buildstatus => 4 # = cancelled