error: returning the result of a let binding from a block. Consider returning the expression directly. --> $DIR/let_return.rs:10:5 | 10 | x | ^ | = note: `-D let-and-return` implied by `-D warnings` note: this expression can be directly returned --> $DIR/let_return.rs:9:13 | 9 | let x = 5; | ^ error: returning the result of a let binding from a block. Consider returning the expression directly. --> $DIR/let_return.rs:16:9 | 16 | x | ^ | note: this expression can be directly returned --> $DIR/let_return.rs:15:17 | 15 | let x = 5; | ^