error[E0792]: expected generic lifetime parameter, found `'_`
  --> $DIR/defined-in-closure-external-lifetime.rs:7:29
   |
LL |     type Opaque<'x> = impl Sized + 'x;
   |                 -- this generic parameter must be used with a generic lifetime parameter
...
LL |         let _ = || { let _: Opaque<'s> = (); };
   |                             ^^^^^^^^^^

error[E0792]: expected generic lifetime parameter, found `'_`
  --> $DIR/defined-in-closure-external-lifetime.rs:16:34
   |
LL |     type Opaque<'x> = impl Sized + 'x;
   |                 -- this generic parameter must be used with a generic lifetime parameter
...
LL |         let _ = || -> Opaque<'s> {};
   |                                  ^^

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0792`.