Rollup merge of #110955 - fee1-dead-contrib:sus-operation, r=compiler-errors

uplift `clippy::clone_double_ref` as `suspicious_double_ref_op`

Split from #109842.

r? ``@compiler-errors``

library/core/tests/clone.rs

@@ -1,4 +1,5 @@
 #[test]
+#[cfg_attr(not(bootstrap), allow(suspicious_double_ref_op))]
 fn test_borrowed_clone() {
     let x = 5;
     let y: &i32 = &x;