error[E0726]: implicit elided lifetime not allowed here
  --> tests/ui/lifetime-span.rs:12:6
   |
12 | impl Trait for A {
   |      ^^^^^ expected lifetime parameter
   |
   = note: assuming a `'static` lifetime...
help: indicate the anonymous lifetime
   |
12 | impl Trait<'_> for A {
   |           ++++

error[E0107]: this trait takes 0 lifetime arguments but 1 lifetime argument was supplied
  --> tests/ui/lifetime-span.rs:32:10
   |
32 | impl<'r> Trait2<'r> for B {
   |          ^^^^^^---- help: remove these generics
   |          |
   |          expected 0 lifetime arguments
   |
note: trait defined here, with 0 lifetime parameters
  --> tests/ui/lifetime-span.rs:22:11
   |
22 | pub trait Trait2 {
   |           ^^^^^^