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

   1 error[E0495]: cannot infer an appropriate lifetime for borrow expression due to conflicting requirements
   2   --> $DIR/regions-close-object-into-object-4.rs:10:11
   3    |
   4 LL |     box B(&*v) as Box<dyn X>
   5    |           ^^^
   6    |
   7 note: first, the lifetime cannot outlive the lifetime `'a` as defined on the function body at 9:6...
   8   --> $DIR/regions-close-object-into-object-4.rs:9:6
   9    |
  10 LL | fn i<'a, T, U>(v: Box<dyn A<U>+'a>) -> Box<dyn X + 'static> {
  11    |      ^^
  12 note: ...so that the type `(dyn A<U> + 'a)` is not borrowed for too long
  13   --> $DIR/regions-close-object-into-object-4.rs:10:11
  14    |
  15 LL |     box B(&*v) as Box<dyn X>
  16    |           ^^^
  17    = note: but, the lifetime must be valid for the static lifetime...
  18    = note: ...so that the expression is assignable:
  19            expected std::boxed::Box<(dyn X + 'static)>
  20               found std::boxed::Box<dyn X>
  21
  22 error: aborting due to previous error
  23
  24 For more information about this error, try `rustc --explain E0495`.