error: unsatisfied lifetime constraints
  --> $DIR/lub-match.rs:40:13
   |
LL | pub fn opt_str2<'a>(maybestr: &'a Option<String>) -> &'static str {
   |                 -- lifetime `'a` defined here
...
LL |             s //~ ERROR E0312
   |             ^ returning this value requires that `'a` must outlive `'static`

error: unsatisfied lifetime constraints
  --> $DIR/lub-match.rs:49:13
   |
LL | pub fn opt_str3<'a>(maybestr: &'a Option<String>) -> &'static str {
   |                 -- lifetime `'a` defined here
...
LL |             s //~ ERROR E0312
   |             ^ returning this value requires that `'a` must outlive `'static`

error: aborting due to 2 previous errors