src/test/ui/mut/mutable-class-fields.stderr

   1 error[E0594]: cannot assign to `nyan.how_hungry`, as `nyan` is not declared as mutable
   2   --> $DIR/mutable-class-fields.rs:15:3
   3    |
   4 LL |   let nyan : Cat = cat(52, 99);
   5    |       ---- help: consider changing this to be mutable: `mut nyan`
   6 LL |   nyan.how_hungry = 0;
   7    |   ^^^^^^^^^^^^^^^^^^^ cannot assign
   8
   9 error: aborting due to previous error
  10
  11 For more information about this error, try `rustc --explain E0594`.