Error code E0670
Rust 2015 does not permit the use of async fn.
Erroneous code example:
#![allow(unused)]
fn main() {
async fn foo() {}
}Switch to the Rust 2018 edition to use async fn.
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Rust 2015 does not permit the use of async fn.
Erroneous code example:
#![allow(unused)]
fn main() {
async fn foo() {}
}Switch to the Rust 2018 edition to use async fn.