1 error[E0599]: no method named `foo` found for type `&b::B` in the current scope
2 --> $DIR/issue-10465.rs:17:15
7 = help: items from traits can only be used if the trait is in scope
8 = note: the following trait is implemented but not in scope, perhaps add a `use` for it:
11 error: aborting due to previous error
13 For more information about this error, try `rustc --explain E0599`.