error[E0425]: cannot find function `bar` in module `mod_file_aux`
  --> $DIR/mod_file_correct_spans.rs:6:27
   |
LL |     assert!(mod_file_aux::bar() == 10);
   |                           ^^^ not found in `mod_file_aux`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0425`.