diff --git a/actix-identity/src/identity_ext.rs b/actix-identity/src/identity_ext.rs
index 8c4bbad69..7e71722d2 100644
--- a/actix-identity/src/identity_ext.rs
+++ b/actix-identity/src/identity_ext.rs
@@ -20,7 +20,7 @@ impl IdentityExt for ServiceRequest {
     }
 }
 
-impl<'a> IdentityExt for GuardContext<'a> {
+impl IdentityExt for GuardContext<'_> {
     fn get_identity(&self) -> Result<Identity, GetIdentityError> {
         Identity::extract(&self.req_data())
     }
diff --git a/actix-limitation/src/status.rs b/actix-limitation/src/status.rs
index e7a61e105..fda06d581 100644
--- a/actix-limitation/src/status.rs
+++ b/actix-limitation/src/status.rs
@@ -16,7 +16,7 @@ impl Status {
     /// Constructs status limit status from parts.
     #[must_use]
     pub(crate) fn new(count: usize, limit: usize, reset_epoch_utc: usize) -> Self {
-        let remaining = if count >= limit { 0 } else { limit - count };
+        let remaining = limit.saturating_sub(count);
 
         Status {
             limit,
diff --git a/actix-session/src/session_ext.rs b/actix-session/src/session_ext.rs
index eefdc6f2b..141dea12e 100644
--- a/actix-session/src/session_ext.rs
+++ b/actix-session/src/session_ext.rs
@@ -31,7 +31,7 @@ impl SessionExt for ServiceResponse {
     }
 }
 
-impl<'a> SessionExt for GuardContext<'a> {
+impl SessionExt for GuardContext<'_> {
     fn get_session(&self) -> Session {
         Session::get_session(&mut self.req_data_mut())
     }
diff --git a/actix-settings/src/settings/backlog.rs b/actix-settings/src/settings/backlog.rs
index 668183d9d..dfe4dfc87 100644
--- a/actix-settings/src/settings/backlog.rs
+++ b/actix-settings/src/settings/backlog.rs
@@ -43,7 +43,7 @@ impl<'de> de::Deserialize<'de> for Backlog {
     {
         struct BacklogVisitor;
 
-        impl<'de> de::Visitor<'de> for BacklogVisitor {
+        impl de::Visitor<'_> for BacklogVisitor {
             type Value = Backlog;
 
             fn expecting(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
diff --git a/actix-settings/src/settings/keep_alive.rs b/actix-settings/src/settings/keep_alive.rs
index 1395984ab..386c0a2e3 100644
--- a/actix-settings/src/settings/keep_alive.rs
+++ b/actix-settings/src/settings/keep_alive.rs
@@ -68,7 +68,7 @@ impl<'de> de::Deserialize<'de> for KeepAlive {
     {
         struct KeepAliveVisitor;
 
-        impl<'de> de::Visitor<'de> for KeepAliveVisitor {
+        impl de::Visitor<'_> for KeepAliveVisitor {
             type Value = KeepAlive;
 
             fn expecting(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
diff --git a/actix-settings/src/settings/max_connection_rate.rs b/actix-settings/src/settings/max_connection_rate.rs
index 702f093b5..8977c9d94 100644
--- a/actix-settings/src/settings/max_connection_rate.rs
+++ b/actix-settings/src/settings/max_connection_rate.rs
@@ -40,7 +40,7 @@ impl<'de> de::Deserialize<'de> for MaxConnectionRate {
     {
         struct MaxConnectionRateVisitor;
 
-        impl<'de> de::Visitor<'de> for MaxConnectionRateVisitor {
+        impl de::Visitor<'_> for MaxConnectionRateVisitor {
             type Value = MaxConnectionRate;
 
             fn expecting(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
diff --git a/actix-settings/src/settings/max_connections.rs b/actix-settings/src/settings/max_connections.rs
index 1bb3dd04e..beb5c22c9 100644
--- a/actix-settings/src/settings/max_connections.rs
+++ b/actix-settings/src/settings/max_connections.rs
@@ -40,7 +40,7 @@ impl<'de> de::Deserialize<'de> for MaxConnections {
     {
         struct MaxConnectionsVisitor;
 
-        impl<'de> de::Visitor<'de> for MaxConnectionsVisitor {
+        impl de::Visitor<'_> for MaxConnectionsVisitor {
             type Value = MaxConnections;
 
             fn expecting(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
diff --git a/actix-settings/src/settings/num_workers.rs b/actix-settings/src/settings/num_workers.rs
index 39c1bc32b..3a3963dc0 100644
--- a/actix-settings/src/settings/num_workers.rs
+++ b/actix-settings/src/settings/num_workers.rs
@@ -39,7 +39,7 @@ impl<'de> de::Deserialize<'de> for NumWorkers {
     {
         struct NumWorkersVisitor;
 
-        impl<'de> de::Visitor<'de> for NumWorkersVisitor {
+        impl de::Visitor<'_> for NumWorkersVisitor {
             type Value = NumWorkers;
 
             fn expecting(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
diff --git a/actix-settings/src/settings/timeout.rs b/actix-settings/src/settings/timeout.rs
index dff3899d5..5099aac33 100644
--- a/actix-settings/src/settings/timeout.rs
+++ b/actix-settings/src/settings/timeout.rs
@@ -71,7 +71,7 @@ impl<'de> de::Deserialize<'de> for Timeout {
     {
         struct TimeoutVisitor;
 
-        impl<'de> de::Visitor<'de> for TimeoutVisitor {
+        impl de::Visitor<'_> for TimeoutVisitor {
             type Value = Timeout;
 
             fn expecting(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {