error[E0716]: temporary value dropped while borrowed
  --> $DIR/return-local-binding-from-desugaring.rs:26:18
   |
LL |     for ref x in xs {
   |                  ^^ creates a temporary which is freed while still in use
...
LL |     }
   |     - temporary value is freed at the end of this statement
LL |     result
   |     ------ borrow later used here
   |
   = note: consider using a `let` binding to create a longer lived value

error: aborting due to previous error

For more information about this error, try `rustc --explain E0716`.