error: items in traits are not importable
  --> $DIR/issue-30560.rs:7:5
   |
LL | use T::*;
   |     ^^^^

error[E0432]: unresolved import `Alias`
  --> $DIR/issue-30560.rs:2:5
   |
LL | use Alias::*;
   |     ^^^^^ `Alias` is a type alias, not a module

error[E0432]: unresolved import `std::io::Result`
  --> $DIR/issue-30560.rs:4:14
   |
LL | use std::io::Result::*;
   |              ^^^^^^ `Result` is a type alias, not a module

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0432`.