Problem? The goal of Rust is to be a general system programing language. In fact, Rust in the past had a runtime that included green threads a primitives; tha

Problem? The goal of Rust is to be a general system programing language. In fact, Rust in the past had a runtime that included green threads a primitives; that ended up being a problem. The runtime and stdlib was only usable in some system programing task (defeating the whole goal).