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;
   |                 ^

error: aborting due to 2 previous errors