1 error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in variable binding
2 --> $DIR/issue-54600.rs:4:19
4 LL | let x: Option<impl Debug> = Some(44_u32);
7 error: aborting due to previous error
9 For more information about this error, try `rustc --explain E0562`.