1 error[E0507]: cannot move out of `*v`, as `v` is a captured variable in an `FnMut` closure
2 --> $DIR/issue-4335.rs:6:20
4 LL | fn f<'r, T>(v: &'r T) -> Box<dyn FnMut() -> T + 'r> {
5 | - captured outer variable
6 LL | id(Box::new(|| *v))
7 | ^^ move occurs because `*v` has type `T`, which does not implement the `Copy` trait
9 error[E0373]: closure may outlive the current function, but it borrows `v`, which is owned by the current function
10 --> $DIR/issue-4335.rs:6:17
12 LL | id(Box::new(|| *v))
13 | ^^ - `v` is borrowed here
15 | may outlive borrowed value `v`
17 note: closure is returned here
18 --> $DIR/issue-4335.rs:6:5
20 LL | id(Box::new(|| *v))
22 help: to force the closure to take ownership of `v` (and any other referenced variables), use the `move` keyword
24 LL | id(Box::new(move || *v))
27 error: aborting due to 2 previous errors
29 Some errors have detailed explanations: E0373, E0507.
30 For more information about an error, try `rustc --explain E0373`.