error[E0308]: mismatched types
  --> $DIR/closure-mismatch.rs:8:5
   |
LL |     baz(|_| ());
   |     ^^^ lifetime mismatch
   |
   = note: expected type `for<'r> Fn<(&'r (),)>`
              found type `Fn<(&(),)>`
note: this closure does not fulfill the lifetime requirements
  --> $DIR/closure-mismatch.rs:8:9
   |
LL |     baz(|_| ());
   |         ^^^^^^
note: the lifetime requirement is introduced here
  --> $DIR/closure-mismatch.rs:5:11
   |
LL | fn baz<T: Foo>(_: T) {}
   |           ^^^

error: aborting due to previous error

For more information about this error, try `rustc --explain E0308`.