src/test/ui/regions/regions-close-object-into-object-4.stderr

   1 error[E0759]: `v` has lifetime `'a` but it needs to satisfy a `'static` lifetime requirement
   2   --> $DIR/regions-close-object-into-object-4.rs:10:11
   3    |
   4 LL | fn i<'a, T, U>(v: Box<dyn A<U>+'a>) -> Box<dyn X + 'static> {
   5    |                   ---------------- this data with lifetime `'a`...
   6 LL |     box B(&*v) as Box<dyn X>
   7    |           ^^^ ...is captured here, requiring it to live as long as `'static`
   8    |
   9 help: consider changing the trait object's explicit `'static` bound to the lifetime of argument `v`
  10    |
  11 LL | fn i<'a, T, U>(v: Box<dyn A<U>+'a>) -> Box<dyn X + 'a> {
  12    |                                                    ~~
  13 help: alternatively, add an explicit `'static` bound to this reference
  14    |
  15 LL | fn i<'a, T, U>(v: Box<(dyn A<U> + 'static)>) -> Box<dyn X + 'static> {
  16    |                   ~~~~~~~~~~~~~~~~~~~~~~~~~
  17
  18 error: aborting due to previous error
  19
  20 For more information about this error, try `rustc --explain E0759`.