In Rust, the methods of a trait inherit the visibility of the trait itself: pub trait Foo<Arg> { pub(self) fn foo(&self, arg: Arg); /* other public methods */ } error[E0449]: unnecessary visibility qualifier --> src/lib.rs:7:3 | 7 | pub(self) fn foo(&self, arg: Arg); | ^^^^^^^^^ At minimum, we should hide this method from our documentation: pub trait Foo<Arg> { #[doc(hidden)] fn foo(&self, arg: Arg); /* other public methods */ } …but this doesn’t actually prevent outsiders from calling ou...
