return redundant clone in cause of cloned.count

Author: pmnoxx

clippy_lints/src/methods/iter_overeager_cloned.rs

@@ -7,6 +7,7 @@ use rustc_lint::LateContext;
 use rustc_span::sym;
 
 use super::ITER_OVEREAGER_CLONED;
+use crate::redundant_clone::REDUNDANT_CLONE;
 
 /// lint use of `cloned().last()` for `Iterators`
 pub(super) fn check<'tcx>(
@@ -23,7 +24,7 @@ pub(super) fn check<'tcx>(
     if recv_impls_iterator {
         let (lint, msg) = match name {
             "count" => (
-                ITER_OVEREAGER_CLONED,
+                REDUNDANT_CLONE,
                 format!(
                     "called `cloned().{}()` on an `Iterator`. It may be more efficient to call\
                     `.{}()` instead",

tests/ui/iter_overeager_cloned.fixed

@@ -1,5 +1,5 @@
 // run-rustfix
-#![warn(clippy::iter_overeager_cloned)]
+#![warn(clippy::iter_overeager_cloned, clippy::redundant_clone)]
 
 fn main() {
     let vec = vec!["1".to_string(), "2".to_string(), "3".to_string()];

tests/ui/iter_overeager_cloned.rs

@@ -1,5 +1,5 @@
 // run-rustfix
-#![warn(clippy::iter_overeager_cloned)]
+#![warn(clippy::iter_overeager_cloned, clippy::redundant_clone)]
 
 fn main() {
     let vec = vec!["1".to_string(), "2".to_string(), "3".to_string()];

tests/ui/iter_overeager_cloned.stderr

@@ -17,6 +17,8 @@ error: called `cloned().count()` on an `Iterator`. It may be more efficient to c
    |
 LL |     let _: usize = vec.iter().cloned().count();
    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `vec.iter().count()`
+   |
+   = note: `-D clippy::redundant-clone` implied by `-D warnings`
 
 error: called `cloned().take(...)` on an `Iterator`. It may be more efficient to call`.take(...).cloned()` instead
   --> $DIR/iter_overeager_cloned.rs:13:21