https://github.com/rust-lang/rust/blob/e9271846294c4ee5bd7706df68180320c0b5ff20/library/std/src/sys/wasi/thread.rs#L137 *1 pub fn sleep(dur: Duration) { let nanos = dur.as_nanos(); assert!(nanos <= u64::MAX as u128); const USERDATA: wasi::…