error[E0716]: temporary value dropped while borrowed
  --> $DIR/issue-17545.rs:7:10
   |
LL |   pub fn foo<'a, F: Fn(&'a ())>(bar: F) {
   |              -- lifetime `'a` defined here
LL | /     bar.call((
LL | |         &id(()),
   | |          ^^^^^^ creates a temporary value which is freed while still in use
LL | |     ));
   | |      -- temporary value is freed at the end of this statement
   | |______|
   |        argument requires that borrow lasts for `'a`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0716`.