error[E0621]: explicit lifetime required in the type of `s` --> $DIR/regions-glb-free-free.rs:15:13 | LL | pub fn set_desc(self, s: &str) -> Flag<'a> { | ---- help: add explicit lifetime `'a` to the type of `s`: `&'a str` LL | / Flag { LL | | name: self.name, LL | | desc: s, LL | | max_count: self.max_count, LL | | value: self.value LL | | } | |_____________^ lifetime `'a` required error: aborting due to previous error For more information about this error, try `rustc --explain E0621`.