diff --git a/actix-hash/tests/body_hash.rs b/actix-hash/tests/body_hash.rs
index 03e36d50..34c739ba 100644
--- a/actix-hash/tests/body_hash.rs
+++ b/actix-hash/tests/body_hash.rs
@@ -1,3 +1,5 @@
+#![allow(missing_docs)]
+
 use actix_hash::{BodyHash, BodySha256};
 use actix_http::BoxedPayloadStream;
 use actix_web::{
diff --git a/actix-web-lab-derive/src/lib.rs b/actix-web-lab-derive/src/lib.rs
index 95ec0182..3addea77 100644
--- a/actix-web-lab-derive/src/lib.rs
+++ b/actix-web-lab-derive/src/lib.rs
@@ -98,8 +98,7 @@ pub fn derive_from_request(input: proc_macro::TokenStream) -> proc_macro::TokenS
         .iter()
         .filter(|field| {
             field.attrs.iter().any(|attr| {
-                attr.parse_args::<Ident>()
-                    .map_or(false, |ident| ident == "copy_from_app_data")
+                attr.parse_args::<Ident>().is_ok_and(|ident| ident == "copy_from_app_data")
             })
         })
         .map(|field| {
diff --git a/actix-web-lab-derive/tests/tdd.rs b/actix-web-lab-derive/tests/tdd.rs
index 6876c564..9e0557e0 100644
--- a/actix-web-lab-derive/tests/tdd.rs
+++ b/actix-web-lab-derive/tests/tdd.rs
@@ -1,3 +1,5 @@
+#![allow(missing_docs)]
+
 use actix_web::{
     http::{Method, StatusCode},
     web, App, HttpResponse, Responder,
diff --git a/actix-web-lab-derive/tests/trybuild.rs b/actix-web-lab-derive/tests/trybuild.rs
index 4ae8155f..ea452dbd 100644
--- a/actix-web-lab-derive/tests/trybuild.rs
+++ b/actix-web-lab-derive/tests/trybuild.rs
@@ -1,3 +1,5 @@
+#![allow(missing_docs)]
+
 #[rustversion::stable(1.70)] // MSRV
 #[test]
 fn compile_macros() {
diff --git a/actix-web-lab/src/util.rs b/actix-web-lab/src/util.rs
index 66adb30f..f5cb2d67 100644
--- a/actix-web-lab/src/util.rs
+++ b/actix-web-lab/src/util.rs
@@ -65,13 +65,13 @@ pub fn fork_request_payload(orig_payload: &mut dev::Payload) -> dev::Payload {
 /// perform a remaining length check before writing.
 pub(crate) struct MutWriter<'a, B>(pub(crate) &'a mut B);
 
-impl<'a, B> MutWriter<'a, B> {
+impl<B> MutWriter<'_, B> {
     pub fn get_ref(&self) -> &B {
         self.0
     }
 }
 
-impl<'a, B: BufMut> io::Write for MutWriter<'a, B> {
+impl<B: BufMut> io::Write for MutWriter<'_, B> {
     fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
         self.0.put_slice(buf);
         Ok(buf.len())
diff --git a/russe/src/lib.rs b/russe/src/lib.rs
index 625174d2..d142c36e 100644
--- a/russe/src/lib.rs
+++ b/russe/src/lib.rs
@@ -28,6 +28,7 @@ pub const MEDIA_TYPE_STR: &str = "text/event-stream";
 
 #[cfg(test)]
 mod tests {
+    /// Asserts that `Option<T>` argument is `None`.
     #[macro_export]
     macro_rules! assert_none {
         ($exp:expr) => {{