error[E0432]: unresolved import `nonexistent_module`
  --> $DIR/issue-53269.rs:16:9
   |
LL |     use nonexistent_module::mac; //~ ERROR unresolved import `nonexistent_module`
   |         ^^^^^^^^^^^^^^^^^^ Maybe a missing `extern crate nonexistent_module;`?

error: `mac` is ambiguous
  --> $DIR/issue-53269.rs:18:5
   |
LL |     mac!(); //~ ERROR `mac` is ambiguous
   |     ^^^
   |
note: `mac` could refer to the macro defined here
  --> $DIR/issue-53269.rs:13:1
   |
LL | macro_rules! mac { () => () }
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
note: `mac` could also refer to the macro imported here
  --> $DIR/issue-53269.rs:16:9
   |
LL |     use nonexistent_module::mac; //~ ERROR unresolved import `nonexistent_module`
   |         ^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 2 previous errors

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