error[E0282]: type annotations needed
  --> $DIR/self-ty-in-path.rs:8:9
   |
LL |         Self::func_a();
   |         ^^^^^^^^^^^^ cannot infer type of the type parameter `U` declared on the associated function `func_a`
   |
help: consider specifying the generic argument
   |
LL |         Self::func_a::<U>();
   |                     +++++

error: aborting due to previous error

For more information about this error, try `rustc --explain E0282`.