Remove false positives from known problems

Author: detrumi

clippy_lints/src/use_self.rs

@@ -27,11 +27,9 @@ use if_chain::if_chain;
 /// feels inconsistent.
 ///
 /// **Known problems:**
-/// - Does not trigger within locally defined macros (#2098)
 /// - False positive when using associated types (#2843)
 /// - False positives in some situations when using generics (#3410)
 /// - False positive when type from outer function can't be used (#3463)
-/// - Does not trigger in lifetimed structs
 ///
 /// **Example:**
 /// ```rust

tests/ui/use_self.rs

@@ -67,7 +67,7 @@ mod lifetimes {
             Foo { foo_str: "foo" }
         }
 
-        // TODO: the lint does not handle lifetimed struct
+        // FIXME: the lint does not handle lifetimed struct
         // `Self` should be applicable here
         fn clone(&self) -> Foo<'a> {
             Foo { foo_str: self.foo_str }