1 error: const `impl`s must be for traits marked with `#[const_trait]`
2 --> $DIR/const-impl-requires-const-trait.rs:6:1
4 LL | impl const A for () {}
7 note: this trait must be annotated with `#[const_trait]`
8 --> $DIR/const-impl-requires-const-trait.rs:3:1
13 error: aborting due to previous error