1 error: `async` is a keyword in the 2018 edition
2 --> $DIR/async-ident-allowed.rs:9:9
5 | ^^^^^ help: you can use a raw identifier to stay compatible: `r#async`
7 = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
8 = note: for more information, see issue #49716 <https://github.com/rust-lang/rust/issues/49716>
9 note: the lint level is defined here
10 --> $DIR/async-ident-allowed.rs:3:9
12 LL | #![deny(rust_2018_compatibility)]
13 | ^^^^^^^^^^^^^^^^^^^^^^^
14 = note: `#[deny(keyword_idents)]` implied by `#[deny(rust_2018_compatibility)]`
16 error: aborting due to previous error