| -^^^^^
| |
| cannot use `+=` on type `&isize`
+help: `+=` can be used on 'isize', you can dereference `x`
|
- = help: `+=` can be used on 'isize', you can dereference `x`: `*x`
+LL | let x = |ref x: isize| { *x += 1; };
+ | ^^
error: aborting due to previous error