Spurious "unused lifetime parameter" warning with async function #64493
Description
#![warn(unused_lifetimes)]
async fn async_fn(&ref mut s: &[i32]) {} //~ WARN lifetime parameter `'_` never used{{ message }}
#![warn(unused_lifetimes)]
async fn async_fn(&ref mut s: &[i32]) {} //~ WARN lifetime parameter `'_` never used