src/test/ui/closures/issue-80313-mutation-in-move-closure.stderr

   1 error[E0596]: cannot borrow `callback` as mutable, as it is not declared as mutable
   2   --> $DIR/issue-80313-mutation-in-move-closure.rs:6:5
   3    |
   4 LL |     let callback = move || {
   5    |         -------- help: consider changing this to be mutable: `mut callback`
   6 LL |         my_var = true;
   7    |         ------ calling `callback` requires mutable binding due to possible mutation of `my_var`
   8 LL |     };
   9 LL |     callback();
  10    |     ^^^^^^^^ cannot borrow as mutable
  11
  12 error: aborting due to previous error
  13
  14 For more information about this error, try `rustc --explain E0596`.