Function with_timeout 

pub fn with_timeout<F: Future>(
    timeout: impl Into<Duration>,
    fut: F,
) -> TimeoutFuture<F>

Runs a given future with a timeout.

If the future completes before the timeout, its output is returned. Otherwise, on timeout, work on the future is stopped (poll is no longer called), the future is dropped and Err(TimeoutError) is returned.

Panics

Panics if the computed instant overflows. Avoid panics with try_with_timeout().