error[E0308]: const not compatible with trait --> $DIR/associated-const-impl-wrong-lifetime.rs:7:5 | LL | const NAME: &'a str = "unit"; | ^^^^^^^^^^^^^^^^^^^ lifetime mismatch | = note: expected reference `&'static str` found reference `&'a str` note: the lifetime `'a` as defined here... --> $DIR/associated-const-impl-wrong-lifetime.rs:6:6 | LL | impl<'a> Foo for &'a () { | ^^ = note: ...does not necessarily outlive the static lifetime error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0308`.