Rust currently provides only the bare essentials for writing async code. Importantly, executors, tasks, reactors, combinators, and low-level I/O futures and traits are not yet provided in the standard library. In the meantime, community-provided async ecosystems fill in these gaps.
There is no asynchronous runtime in the standard library
на данное время крупных проектов использующие его (кроме дискорда) нет