Error code E0771

A non-'static lifetime was used in a const generic. This is currently not allowed.

Erroneous code example:

#![allow(unused)]
#![feature(adt_const_params)]

fn main() {
fn function_with_str<'a, const STRING: &'a str>() {} // error!
}

To fix this issue, the lifetime in the const generic need to be changed to 'static:

#![allow(unused)]
#![feature(adt_const_params)]

fn main() {
fn function_with_str<const STRING: &'static str>() {} // ok!
}

For more information, see GitHub issue #74052.