rustc/tests/ui/imports/tool-mod-child.rs

use clippy::a; //~ ERROR unresolved import `clippy`
use clippy::a::b; //~ ERROR failed to resolve: you might be missing crate `clippy`

use rustdoc::a; //~ ERROR unresolved import `rustdoc`
use rustdoc::a::b; //~ ERROR failed to resolve: you might be missing crate `rustdoc`

fn main() {}