1 error[E0503]: cannot use `value` because it was mutably borrowed
4 LL | let _borrow = &mut value;
5 | ----- borrow of `value` occurs here
6 LL | let _sum = value + 1;
7 | ^^^^^ use of borrowed `value`
9 error: aborting due to previous error
11 For more information about this error, try `rustc --explain E0503`.