error: this lifetime isn't used in the function definition
  --> $DIR/unused_lt.rs:26:14
   |
26 | fn unused_lt<'a>(x: u8) {
   |              ^^
   |
   = note: `-D clippy::extra-unused-lifetimes` implied by `-D warnings`

error: this lifetime isn't used in the function definition
  --> $DIR/unused_lt.rs:30:25
   |
30 | fn unused_lt_transitive<'a, 'b: 'a>(x: &'b u8) {
   |                         ^^

error: this lifetime isn't used in the function definition
  --> $DIR/unused_lt.rs:60:10
   |
60 |     fn x<'a>(&self) {}
   |          ^^

error: aborting due to 3 previous errors