error[E0597]: borrowed value does not live long enough
  --> $DIR/regions-ret.rs:14:13
   |
LL |     return &id(3); //~ ERROR borrowed value does not live long enough
   |             ^^^^^- temporary value only lives until here
   |             |
   |             temporary value does not live long enough
   |
note: borrowed value must be valid for the anonymous lifetime #1 defined on the function body at 13:1...
  --> $DIR/regions-ret.rs:13:1
   |
LL | / fn f(_x: &isize) -> &isize {
LL | |     return &id(3); //~ ERROR borrowed value does not live long enough
LL | | }
   | |_^

error: aborting due to previous error

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