1 error[E0599]: no method named `f` found for unit type `()` in the current scope
2 --> $DIR/shadowed-trait-methods.rs:13:8
4 LL | pub trait T { fn f(&self) {} }
5 | - the method is available for `()` here
8 | ^ method not found in `()`
10 = help: items from traits can only be used if the trait is in scope
11 help: the following trait is implemented but not in scope; perhaps add a `use` for it:
16 error: aborting due to previous error
18 For more information about this error, try `rustc --explain E0599`.