error[E0603]: module `n` is private
  --> $DIR/issue-28388-2.rs:7:8
   |
LL | use m::n::{};
   |        ^ private module
   |
note: the module `n` is defined here
  --> $DIR/issue-28388-2.rs:4:5
   |
LL |     mod n {}
   |     ^^^^^

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0603`.