warning: method `convert` is never used
  --> $DIR/multidispatch-infer-convert-target.rs:8:8
   |
LL | trait Convert<Target> {
   |       ------- method in this trait
LL |     fn convert(&self) -> Target;
   |        ^^^^^^^
   |
   = note: `#[warn(dead_code)]` on by default

warning: 1 warning emitted