https://bugs.winehq.org/show_bug.cgi?id=52172
--- Comment #3 from Paul Gofman pgofman@codeweavers.com --- I think WINEDEBUG=-all is even better as besides stopping the unwanted output it also avoids the overhead for formatting and writing those messages. And yes, there is probably nothing to fix here (besides maybe implementing that functionality but that’s not what this report concerns).