anchor.diff:      Pid = CheckRec#health_check.service_pid,
       case CheckRec#health_check.interval_tref of
           undefined -> ok;
  -        Tref -> erlang:cancel_timer(Tref),
  -                ok
  +        Tref ->
  +            _ = erlang:cancel_timer(Tref),
  +            ok
       end,
       CheckingPid = proc_lib:spawn_link(fun() ->
           case erlang:apply(Mod, Func, [Pid | Args]) of
  
positive.code:         undefined ->
              ok;
          OldTref ->
              erlang:cancel_timer(OldTref),
              ok
      end,
      Interval = app_helper:get_env(riak_core, gossip_interval),
  
negative.code:         error ->
              Healths;
          {ok, Check} ->
              {_, _} = health_fsm(remove, ServiceId, Check),
              orddict:erase(ServiceId, Healths)
      end,
      State#state{health_checks = Healths2}.
  