1 error[E0282]: type annotations needed
2 --> $DIR/issue-91762.rs:24:15
4 LL | ret = <Self::Base as Functor>::fmap(arg);
5 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the associated function `fmap`
7 help: consider specifying the generic arguments
9 LL | ret = <Self::Base as Functor>::fmap::<T, U>(arg);
12 error: aborting due to previous error
14 For more information about this error, try `rustc --explain E0282`.