IntroductionImagine you want to create a new library in Rust. All it does is wrap up a public API that you need for something else, like the Spotify API or maybe a database like ArangoDB. It’s not rocket science, you aren’t inventing something new or dealing with complex algorithms, so you expect it to be relatively straightforward.You decide to implement the library with async. Most of the work in your library has to do with performing HTTP requests, which are mostly I/O, so it makes sense (tha...