Suppress trivially_copy_pass_by_ref lint on fn is_zero

test_suite/tests/test_annotations.rs

@@ -1,4 +1,4 @@
-#![allow(clippy::cast_lossless)]
+#![allow(clippy::cast_lossless, clippy::trivially_copy_pass_by_ref)]
 
 use serde::de::{self, MapAccess, Unexpected, Visitor};
 use serde::{Deserialize, Deserializer, Serialize, Serializer};

test_suite/tests/test_gen.rs

@@ -4,6 +4,7 @@
 
 #![deny(warnings)]
 #![cfg_attr(feature = "unstable", feature(non_ascii_idents))]
+#![allow(clippy::trivially_copy_pass_by_ref)]
 
 use serde::de::DeserializeOwned;
 use serde::{Deserialize, Deserializer, Serialize, Serializer};