1 error[E0700]: hidden type for `impl Trait` captures lifetime that does not appear in bounds
2 --> $DIR/hidden-lifetimes.rs:28:54
4 LL | fn hide_ref<'a, 'b, T: 'static>(x: &'a mut &'b T) -> impl Swap + 'a {
7 | hidden type `&'a mut &'b T` captures the lifetime `'b` as defined here
9 help: to declare that the `impl Trait` captures `'b`, you can add an explicit `'b` lifetime bound
11 LL | fn hide_ref<'a, 'b, T: 'static>(x: &'a mut &'b T) -> impl Swap + 'a + 'b {
14 error[E0700]: hidden type for `impl Trait` captures lifetime that does not appear in bounds
15 --> $DIR/hidden-lifetimes.rs:45:70
17 LL | fn hide_rc_refcell<'a, 'b: 'a, T: 'static>(x: Rc<RefCell<&'b T>>) -> impl Swap + 'a {
20 | hidden type `Rc<RefCell<&'b T>>` captures the lifetime `'b` as defined here
22 help: to declare that the `impl Trait` captures `'b`, you can add an explicit `'b` lifetime bound
24 LL | fn hide_rc_refcell<'a, 'b: 'a, T: 'static>(x: Rc<RefCell<&'b T>>) -> impl Swap + 'a + 'b {
27 error: aborting due to 2 previous errors
29 For more information about this error, try `rustc --explain E0700`.