error[E0599]: no method named `nya` found for type parameter `T` in the current scope
  --> $DIR/issue-103646.rs:6:7
   |
LL | fn uwu<T: Cat>(c: T) {
   |        - method `nya` not found for this type parameter
LL |     c.nya();
   |     --^^^--
   |     | |
   |     | this is an associated function, not a method
   |     help: use associated function syntax instead: `T::nya()`
   |
   = note: found the following associated functions; to be used as methods, functions must have a `self` parameter
note: the candidate is defined in the trait `Cat`
  --> $DIR/issue-103646.rs:2:5
   |
LL |     fn nya() {}
   |     ^^^^^^^^

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0599`.