Missing import line in 17.3 use std::future::Future; in Listing 17-19

[humblemat810]

Problem

Listing 17-19: Using Pin directly with the pin! macro to avoid unnecessary heap allocations

web version does not run and time out. local check find the reference to Future is missing. This example suppose to run but miss the line
use std::future::Future; in imports

https://doc.rust-lang.org/book/ch17-03-more-futures.html

Steps

click run or copy the code to cargo run.

Possible Solution(s)

add back the line

Notes

thanks for tutorial and we can keep it up

Version

the version currently online at the time of 20251124 UTC + 10 9:21 am