Unused import lint does not trigger if imported item is used through another path

[wthrowe]

This gives no warnings:

mod a {
    pub fn foo() {}
}

fn main() {
    use a::foo; // Should trigger unused_imports
    a::foo();
}

[Aatch]

Updated title to be more clear about the issue. I initially read the previous title as "Unused import lint doesn't trigger if import is used", which seems kinda expected :P.

[wthrowe]

Thank you. I agree that the new title is much clearer.