anchor.diff:          true ->
               abort_slide(State, SlidePred, pred, Reason, false);
           _ ->
  -            log:log(warn, "[ dht_node_move ~w ] slide_pred_abort received with no "
  -                          "matching slide operation (ID: ~w, slide_pred: ~w)~n",
  +            log:log(warn, "[ dht_node_move ~.0p ] slide_pred_abort received with no "
  +                          "matching slide operation (ID: ~.0p, slide_pred: ~.0p)~n",
                       [comm:this(), MoveFullId, dht_node_state:get(State, slide_pred)]),
               State
       end;
  
positive.code: %% @doc Returns whether a slide operation is possible, i.e. MySlide is null and
  %%      OtherSlide is either null or not overlapping with TargetId.
  %%      Helper for can_slide_succ/2 and can_slide_pred/2.
  -spec can_slide(MySlide::slide_op:slide_op(), OtherSlide::slide_op:slide_op(), TargetId::?RT:key()) -> boolean().
  can_slide(MySlide, OtherSlide, TargetId) ->
      MySlide =:= null andalso
          (OtherSlide =:= null orelse
  
negative.code:                     end;
                  'send' -> % can not send if TargetId is not in my range!
                      abort_slide(State, node:pidX(TargetNode), MoveFullId, SourcePid, Tag,
                                  PredOrSucc, target_id_not_in_range, not First);
                  'rcv' when PredOrSucc =:= pred ->
                      % slide with pred, receive data
                      SlideOp = slide_op:new_receiving_slide(
  