anchor.diff:                      {ok, {FD, Inode}} ->
                           #file{name=Name, level=lager_util:level_to_num(Level), fd=FD, inode=Inode};
                       Error ->
  -                        lager:error("Failed to open log file ~s with error ~p",
  +                        ?LOG(error, "Failed to open log file ~s with error ~p",
                               [Name, Error]),
                           #file{name=Name, level=lager_util:level_to_num(Level), flap=true}
                   end
  
positive.code:         _ ->
              NewFiles = lists:map(
                  fun(#file{name=Name} = File) when Name == Ident ->
                          lager:notice("Changed loglevel of ~s to ~p", [Ident, Level]),
                          File#file{level=lager_util:level_to_num(Level)};
                      (X) -> X
                  end, Files),
  
negative.code: 
  -include_lib("kernel/include/file.hrl").
  
  -export([init/1, handle_call/2, handle_event/2, handle_info/2, terminate/2,
          code_change/3]).
  
  