error: the following explicit lifetimes could be elided: 'a --> $DIR/ice-2774.rs:15:28 | LL | pub fn add_barfoos_to_foos<'a>(bars: &HashSet<&'a Bar>) { | ^^ ^^ | = note: `-D clippy::needless-lifetimes` implied by `-D warnings` help: elide the lifetimes | LL - pub fn add_barfoos_to_foos<'a>(bars: &HashSet<&'a Bar>) { LL + pub fn add_barfoos_to_foos(bars: &HashSet<&Bar>) { | error: aborting due to previous error