| error[E0596]: cannot borrow `foo` as mutable, as it is not declared as mutable | |
| --> $DIR/span-covering-argument-1.rs:5:14 | |
| | | |
| LL | let $s = 0; | |
| | -- help: consider changing this to be mutable: `mut foo` | |
| LL | *&mut $s = 0; | |
| | ^^^^^^^ cannot borrow as mutable | |
| ... | |
| LL | bad!(foo whatever); | |
| | ------------------- in this macro invocation | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0596`. |