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diff --git a/src/docs/duplicate_mod.txt b/src/docs/duplicate_mod.txt
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-### What it does
-Checks for files that are included as modules multiple times.
-
-### Why is this bad?
-Loading a file as a module more than once causes it to be compiled
-multiple times, taking longer and putting duplicate content into the
-module tree.
-
-### Example
-```
-// lib.rs
-mod a;
-mod b;
-```
-```
-// a.rs
-#[path = "./b.rs"]
-mod b;
-```
-
-Use instead:
-
-```
-// lib.rs
-mod a;
-mod b;
-```
-```
-// a.rs
-use crate::b;
-```
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