anchor.diff:                          undefined ->
                               undefined;
                           _ ->
  -                            lager:info("~p: faulted during forward_message of background message, message ~p should be dropped.", [node(), M]),
  +                            replay_debug("~p: faulted during forward_message of background message, message ~p should be dropped.", [node(), M]),
                               undefined
                       end;
                   _ ->
  
positive.code:                             undefined ->
                                  undefined;
                              _ ->
                                  lager:info("~p: faulted during receive_message of background message, message ~p should be dropped.", [node(), M]),
                                  undefined
                          end;
                      _ ->
  
negative.code:     %% Install faulted_for_background tracing interposition function.
      lists:foreach(fun({_, Node}) ->
          InterpositionFun = fun({forward_message, _N, M}) ->
              replay_debug("~p: interposition called for message: ~p", [node(), M]),
  
              case partisan_config:get(faulted_for_background) of 
                  true ->
  