error: expected identifier, found keyword `impl` --> $DIR/issue-81806.rs:2:1 | LL | trait T { const | - while parsing this item list starting here LL | impl | ^^^^ expected identifier, found keyword LL | } | - the item list ends here | help: escape `impl` to use it as an identifier | LL | r#impl | ++ error: aborting due to 1 previous error