error: lifetime may not live long enough --> $DIR/lub-match.rs:30:13 | LL | pub fn opt_str2<'a>(maybestr: &'a Option<String>) -> &'static str { | -- lifetime `'a` defined here ... LL | s | ^ returning this value requires that `'a` must outlive `'static` error: lifetime may not live long enough --> $DIR/lub-match.rs:40:13 | LL | pub fn opt_str3<'a>(maybestr: &'a Option<String>) -> &'static str { | -- lifetime `'a` defined here ... LL | s | ^ returning this value requires that `'a` must outlive `'static` error: aborting due to 2 previous errors