1 error[E0596]: cannot borrow `tick` as mutable, as it is not declared as mutable
2 --> $DIR/unboxed-closures-infer-fnmut-move-missing-mut.rs:7:5
4 LL | let tick = move || counter += 1;
5 | ---- help: consider changing this to be mutable: `mut tick`
6 LL | tick(); //~ ERROR cannot borrow immutable local variable `tick` as mutable
7 | ^^^^ cannot borrow as mutable
9 error: aborting due to previous error
11 For more information about this error, try `rustc --explain E0596`.