error[E0726]: implicit elided lifetime not allowed here
  --> $DIR/trait-elided.rs:5:6
   |
LL | impl MyTrait for u32 {}
   |      ^^^^^^^ expected lifetime parameter
   |
help: indicate the anonymous lifetime
   |
LL | impl MyTrait<'_> for u32 {}
   |             ++++

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0726`.