anchor.diff:      {set_verbosity, NewVerbosity} ->
         NewState = State#logger_state{verbosity = NewVerbosity},
         loop(NewState);
  -    {complete, Warn} ->
  +    {complete, Warn, Scheduler, Ref} ->
         {NewErrors, NewSSB, GraphFinal, GraphColor} =
           case Warn of
             sleep_set_block ->
  
positive.code:           traces_ssb = NewSSB,
            errors = NewErrors
           },
        loop(NewState);
      tick ->
        clear_ticks(),
  
negative.code: -spec complete(logger(), concuerror_warnings()) -> ok.
  
  complete(Logger, Warnings) ->
    Ref = make_ref(),
    Logger ! {complete, Warnings, self(), Ref},
    receive
      Ref -> ok
    end.
  
  -spec log(logger(), log_level(), term(), string(), [term()]) -> ok.
  
  