error[E0687]: lifetimes used in `fn` or `Fn` syntax must be explicitly declared using `<...>` binders
  --> $DIR/E0687.rs:14:15
   |
LL | fn foo(x: fn(&'a u32)) {} //~ ERROR must be explicitly
   |               ^^ in-band lifetime definition

error[E0687]: lifetimes used in `fn` or `Fn` syntax must be explicitly declared using `<...>` binders
  --> $DIR/E0687.rs:16:16
   |
LL | fn bar(x: &Fn(&'a u32)) {} //~ ERROR must be explicitly
   |                ^^ in-band lifetime definition

error[E0687]: lifetimes used in `fn` or `Fn` syntax must be explicitly declared using `<...>` binders
  --> $DIR/E0687.rs:18:15
   |
LL | fn baz(x: fn(&'a u32), y: &'a u32) {} //~ ERROR must be explicitly
   |               ^^ in-band lifetime definition

error[E0687]: lifetimes used in `fn` or `Fn` syntax must be explicitly declared using `<...>` binders
  --> $DIR/E0687.rs:23:26
   |
LL |     fn bar(&self, x: fn(&'a u32)) {} //~ ERROR must be explicitly
   |                          ^^ in-band lifetime definition

error: aborting due to 4 previous errors

For more information about this error, try `rustc --explain E0687`.