error[E0310]: the parameter type `T` may not live long enough
  --> $DIR/regions-close-object-into-object-5.rs:17:5
   |
LL | fn f<'a, T, U>(v: Box<A<T> + 'static>) -> Box<X + 'static> {
   |          - help: consider adding an explicit lifetime bound...: `T: 'static`
LL |     // oh dear!
LL |     box B(&*v) as Box<X>
   |     ^^^^^^^^^^ ...so that the type `B<'_, T>` will meet its required lifetime bounds

error[E0310]: the parameter type `T` may not live long enough
  --> $DIR/regions-close-object-into-object-5.rs:17:9
   |
LL | fn f<'a, T, U>(v: Box<A<T> + 'static>) -> Box<X + 'static> {
   |          - help: consider adding an explicit lifetime bound...: `T: 'static`
LL |     // oh dear!
LL |     box B(&*v) as Box<X>
   |         ^ ...so that the type `T` will meet its required lifetime bounds

error[E0310]: the parameter type `T` may not live long enough
  --> $DIR/regions-close-object-into-object-5.rs:17:9
   |
LL | fn f<'a, T, U>(v: Box<A<T> + 'static>) -> Box<X + 'static> {
   |          - help: consider adding an explicit lifetime bound...: `T: 'static`
LL |     // oh dear!
LL |     box B(&*v) as Box<X>
   |         ^^^^^^ ...so that the type `T` will meet its required lifetime bounds...
   |
note: ...that is required by this bound
  --> $DIR/regions-close-object-into-object-5.rs:9:17
   |
LL | struct B<'a, T: 'a>(&'a (A<T> + 'a));
   |                 ^^

error[E0310]: the parameter type `T` may not live long enough
  --> $DIR/regions-close-object-into-object-5.rs:17:11
   |
LL | fn f<'a, T, U>(v: Box<A<T> + 'static>) -> Box<X + 'static> {
   |          - help: consider adding an explicit lifetime bound...: `T: 'static`
LL |     // oh dear!
LL |     box B(&*v) as Box<X>
   |           ^^^ ...so that the reference type `&dyn A<T>` does not outlive the data it points at

error[E0310]: the parameter type `T` may not live long enough
  --> $DIR/regions-close-object-into-object-5.rs:17:11
   |
LL | fn f<'a, T, U>(v: Box<A<T> + 'static>) -> Box<X + 'static> {
   |          - help: consider adding an explicit lifetime bound...: `T: 'static`
LL |     // oh dear!
LL |     box B(&*v) as Box<X>
   |           ^^^ ...so that the type `(dyn A<T> + 'static)` is not borrowed for too long

error[E0310]: the parameter type `T` may not live long enough
  --> $DIR/regions-close-object-into-object-5.rs:17:11
   |
LL | fn f<'a, T, U>(v: Box<A<T> + 'static>) -> Box<X + 'static> {
   |          - help: consider adding an explicit lifetime bound...: `T: 'static`
LL |     // oh dear!
LL |     box B(&*v) as Box<X>
   |           ^^^ ...so that the type `(dyn A<T> + 'static)` is not borrowed for too long

error: aborting due to 6 previous errors

For more information about this error, try `rustc --explain E0310`.