error: file is loaded as a module multiple times: `src/b.rs`
 --> src/main.rs:5:1
  |
5 |   mod b;
  |   ^^^^^^ first loaded here
6 | / #[path = "b.rs"]
7 | | mod b2;
  | |_______^ loaded again here
  |
  = help: replace all but one `mod` item with `use` items
  = note: `-D clippy::duplicate-mod` implied by `-D warnings`
  = help: to override `-D warnings` add `#[allow(clippy::duplicate_mod)]`

error: file is loaded as a module multiple times: `src/c.rs`
  --> src/main.rs:9:1
   |
9  |   mod c;
   |   ^^^^^^ first loaded here
10 | / #[path = "c.rs"]
11 | | mod c2;
   | |_______^ loaded again here
12 | / #[path = "c.rs"]
13 | | mod c3;
   | |_______^ loaded again here
   |
   = help: replace all but one `mod` item with `use` items

error: file is loaded as a module multiple times: `src/d.rs`
  --> src/main.rs:18:1
   |
18 |   mod d;
   |   ^^^^^^ first loaded here
19 | / #[path = "d.rs"]
20 | | mod d2;
   | |_______^ loaded again here
   |
   = help: replace all but one `mod` item with `use` items

error: file is loaded as a module multiple times: `src/from_other_module.rs`
  --> src/main.rs:15:1
   |
15 |   mod from_other_module;
   |   ^^^^^^^^^^^^^^^^^^^^^^ first loaded here
   |
  ::: src/other_module/mod.rs:1:1
   |
1  | / #[path = "../from_other_module.rs"]
2  | | mod m;
   | |______^ loaded again here
   |
   = help: replace all but one `mod` item with `use` items

error: could not compile `duplicate_mod` (bin "duplicate_mod") due to 4 previous errors