Last week, Tyler Mandry published an interesting post about a problem that the Rust project calls “Barbara battles buffered streams.” Tyler does a good job explaining the issue, but briefly the problem is that the buffering adapters from the futures library (Buffered and BufferUnordered) do not interact well with for await if the processing in the body is asynchronous (i.e. if it contains any await expressions). I think we can better understand the problem if we examine it visually. First...
