error: lifetime may not live long enough
  --> $DIR/regions-close-object-into-object-2.rs:9:5
   |
LL | fn g<'a, T: 'static>(v: Box<dyn A<T> + 'a>) -> Box<dyn X + 'static> {
   |      -- lifetime `'a` defined here
LL |     Box::new(B(&*v)) as Box<dyn X>
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ returning this value requires that `'a` must outlive `'static`
   |
help: consider changing the trait object's explicit `'static` bound to the lifetime of argument `v`
   |
LL | fn g<'a, T: 'static>(v: Box<dyn A<T> + 'a>) -> Box<dyn X + 'a> {
   |                                                            ~~
help: alternatively, add an explicit `'static` bound to this reference
   |
LL | fn g<'a, T: 'static>(v: Box<(dyn A<T> + 'static)>) -> Box<dyn X + 'static> {
   |                         ~~~~~~~~~~~~~~~~~~~~~~~~~

error[E0515]: cannot return value referencing local data `*v`
  --> $DIR/regions-close-object-into-object-2.rs:9:5
   |
LL |     Box::new(B(&*v)) as Box<dyn X>
   |     ^^^^^^^^^^^---^^^^^^^^^^^^^^^^
   |     |          |
   |     |          `*v` is borrowed here
   |     returns a value referencing data owned by the current function

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0515`.