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

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

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

error[E0515]: cannot return value referencing local data `*v`
  --> $DIR/regions-close-object-into-object-5.rs:17:5
   |
LL |     Box::new(B(&*v)) as Box<dyn X>
   |     ^^^^^^^^^^^---^^^^^^^^^^^^^^^^
   |     |          |
   |     |          `*v` is borrowed here
   |     returns a value referencing data owned by the current function

error[E0310]: the parameter type `T` may not live long enough
  --> $DIR/regions-close-object-into-object-5.rs:17:14
   |
LL |     Box::new(B(&*v)) as Box<dyn X>
   |              ^^^^^^
   |              |
   |              the parameter type `T` must be valid for the static lifetime...
   |              ...so that the type `T` will meet its required lifetime bounds
   |
help: consider adding an explicit lifetime bound
   |
LL | fn f<'a, T: 'static, U>(v: Box<A<T> + 'static>) -> Box<X + 'static> {
   |           +++++++++

error: aborting due to 5 previous errors

Some errors have detailed explanations: E0310, E0515.
For more information about an error, try `rustc --explain E0310`.