1 error: cannot declare a new module at this location
2 --> $DIR/auxiliary/foo/bar.rs:11:9
7 note: maybe move this module `$DIR/auxiliary/foo/bar.rs` to its own directory via `$DIR/auxiliary/foo/bar/mod.rs`
8 --> $DIR/auxiliary/foo/bar.rs:11:9
13 error: aborting due to previous error