error[E0445]: private trait `Foo` in public interface
  --> $DIR/E0445.rs:5:1
   |
LL | pub trait Bar : Foo {}
   | ^^^^^^^^^^^^^^^^^^^^^^ can't leak private trait

error[E0445]: private trait `Foo` in public interface
  --> $DIR/E0445.rs:7:1
   |
LL | pub struct Bar2<T: Foo>(pub T);
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private trait

error[E0445]: private trait `Foo` in public interface
  --> $DIR/E0445.rs:9:1
   |
LL | pub fn foo<T: Foo> (t: T) {}
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private trait

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0445`.