I noticed that in one of my project, inlining Poll::map manually reduces some binary size, then I noticed Poll::map is not marked #[inline]. Since both Option::map and Result::map are marked #[inline], I wonder whether this is an oversight. I failed to reproduce the binary size reduction effect with an example code, but maybe the reason behind inlining Option::map and Result::map also applies to Poll::map? How about Poll::map_ok and Poll::map_err?