error[E0594]: cannot assign to `nyan.how_hungry`, as `nyan` is not declared as mutable | |
--> $DIR/mutable-class-fields.rs:15:3 | |
| | |
LL | let nyan : Cat = cat(52, 99); | |
| ---- help: consider changing this to be mutable: `mut nyan` | |
LL | nyan.how_hungry = 0; | |
| ^^^^^^^^^^^^^^^^^^^ cannot assign | |
error: aborting due to previous error | |