error[E0596]: cannot borrow `x` as mutable, as it is not declared as mutable | |
--> $DIR/issue-37139.rs:12:18 | |
| | |
LL | test(&mut x); | |
| ^^^^^^ | |
| | | |
| cannot borrow as mutable | |
| try removing `&mut` here | |
error: aborting due to previous error | |
For more information about this error, try `rustc --explain E0596`. |