error[E0597]: `y` does not live long enough
  --> $DIR/regions-nested-fns-2.rs:18:25
   |
LL |         |z| {
   |         --- value captured here
LL |             //~^ ERROR E0373
LL |             if false { &y } else { z }
   |                         ^ borrowed value does not live long enough
LL |         });
LL | }
   | - `y` dropped here while still borrowed
   |
   = note: borrowed value must be valid for the static lifetime...

error: aborting due to previous error

For more information about this error, try `rustc --explain E0597`.