Importing from the wrong module leads to privacy error, which is unhelpful

[Manishearth]

use crate::foo::Bar;

mod foo {use crate::bar::Bar;}
pub mod bar {pub struct Bar;}

this kind of thing happens pretty often for me, where I try importing from the wrong module.

This gives me the following error:

error[E0603]: struct `Bar` is private
 --> src/main.rs:3:17
  |
3 | use crate::foo::Bar;
  |                 ^^^

this is misleading because most Rust mental models don't consider use statements to be private instances, they just work that way.

Ideally, this error would notice that it's a private use statement, and instead backtrack it to find the actual path that should be used.

[jplatte]

Duplicate of #42909?