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error[E0309]: the parameter type `T` may not live long enough
  --> $DIR/wf-in-associated-type.rs:36:23
   |
LL |         type Opaque = impl Sized + 'a;
   |                       ^^^^^^^^^^^^^^^ ...so that the type `&'a T` will meet its required lifetime bounds
   |
help: consider adding an explicit lifetime bound...
   |
LL |     impl<'a, T: 'a> Trait<'a, T> for () {
   |               ++++

error[E0309]: the parameter type `T` may not live long enough
  --> $DIR/wf-in-associated-type.rs:36:23
   |
LL |         type Opaque = impl Sized + 'a;
   |                       ^^^^^^^^^^^^^^^ ...so that the reference type `&'a T` does not outlive the data it points at
   |
help: consider adding an explicit lifetime bound...
   |
LL |     impl<'a, T: 'a> Trait<'a, T> for () {
   |               ++++

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0309`.