error[E0594]: cannot assign to `n`, as it is a captured variable in a `Fn` closure
--> $DIR/unboxed-closures-mutate-upvar.rs:53:9
|
-LL | fn to_fn<A,F:Fn<A>>(f: F) -> F { f }
- | - change this to accept `FnMut` instead of `Fn`
+LL | fn to_fn<A:std::marker::Tuple,F:Fn<A>>(f: F) -> F { f }
+ | - change this to accept `FnMut` instead of `Fn`
...
LL | let mut f = to_fn(move || {
| ----- ------- in this closure