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+### What it does
+It lints if a struct has two methods with the same name:
+one from a trait, another not from trait.
+
+### Why is this bad?
+Confusing.
+
+### Example
+```
+trait T {
+    fn foo(&self) {}
+}
+
+struct S;
+
+impl T for S {
+    fn foo(&self) {}
+}
+
+impl S {
+    fn foo(&self) {}
+}
+```
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