error[E0433]: failed to resolve: `Self` is only available in impls, traits, and type definitions
  --> $DIR/issue-62305-self-assoc-ty.rs:1:14
   |
LL | type Alias = Self::Target;
   |              ^^^^ `Self` is only available in impls, traits, and type definitions

error: aborting due to previous error

For more information about this error, try `rustc --explain E0433`.