Error code E0253
Attempt was made to import an unimportable value. This can happen when trying to import a method from a trait.
Erroneous code example:
mod foo { pub trait MyTrait { fn do_something(); } } use foo::MyTrait::do_something; // error: `do_something` is not directly importable fn main() {}
It's invalid to directly import methods belonging to a trait or concrete type.