@ekuber Don't get me wrong, I'm positively amazed by rustc messages in general, and this one is no exception. On the other hand I also like to see how I should approach the API I'm about to use, having a map about the code base before I go down a path that just won't work. I feel like relying on the compiler is like periodically calling a hovering helicopter to get out of the woods, instead of having a proper $5 map.