diff --git a/http-signature-normalization-actix/src/digest/middleware.rs b/http-signature-normalization-actix/src/digest/middleware.rs
index b081445..10f511d 100644
--- a/http-signature-normalization-actix/src/digest/middleware.rs
+++ b/http-signature-normalization-actix/src/digest/middleware.rs
@@ -74,11 +74,7 @@ impl FromRequest for DigestVerified {
     type Config = ();
 
     fn from_request(req: &HttpRequest, _: &mut Payload) -> Self::Future {
-        let res = req
-            .extensions()
-            .get::<Self>()
-            .map(|s| *s)
-            .ok_or(VerifyError);
+        let res = req.extensions().get::<Self>().copied().ok_or(VerifyError);
 
         if res.is_err() {
             debug!("Failed to fetch DigestVerified from request");
@@ -108,6 +104,8 @@ where
     }
 }
 
+type FutResult<T, E> = dyn Future<Output = Result<T, E>>;
+
 impl<T, S, B> Service for VerifyMiddleware<T, S>
 where
     T: DigestVerify + Clone + 'static,
@@ -119,7 +117,7 @@ where
     type Request = ServiceRequest;
     type Response = ServiceResponse<B>;
     type Error = actix_web::Error;
-    type Future = Pin<Box<dyn Future<Output = Result<Self::Response, Self::Error>>>>;
+    type Future = Pin<Box<FutResult<Self::Response, Self::Error>>>;
 
     fn poll_ready(&mut self, cx: &mut Context) -> Poll<Result<(), Self::Error>> {
         self.0.poll_ready(cx)
@@ -140,7 +138,7 @@ where
             let f1 = verify_payload(vec, self.2.clone(), payload, tx);
 
             let payload: Pin<Box<dyn Stream<Item = Result<Bytes, PayloadError>> + 'static>> =
-                Box::pin(rx.map(|bytes| Ok(bytes)));
+                Box::pin(rx.map(Ok));
             req.set_payload(payload.into());
             req.extensions_mut().insert(DigestVerified);
 
@@ -190,11 +188,11 @@ where
 }
 
 fn parse_digest(h: &HeaderValue) -> Option<Vec<DigestPart>> {
-    let h = h.to_str().ok()?.split(";").next()?;
+    let h = h.to_str().ok()?.split(';').next()?;
     let v: Vec<_> = h
-        .split(",")
+        .split(',')
         .filter_map(|p| {
-            let mut iter = p.splitn(2, "=");
+            let mut iter = p.splitn(2, '=');
             iter.next()
                 .and_then(|alg| iter.next().map(|value| (alg, value)))
         })
diff --git a/http-signature-normalization-actix/src/digest/sha2.rs b/http-signature-normalization-actix/src/digest/sha2.rs
index 1589752..3938777 100644
--- a/http-signature-normalization-actix/src/digest/sha2.rs
+++ b/http-signature-normalization-actix/src/digest/sha2.rs
@@ -25,9 +25,9 @@ fn verify(digest: &mut impl sha2::Digest, name: &str, parts: &[DigestPart], byte
         parts.iter().fold(String::new(), |mut acc, item| {
             if acc.is_empty() {
             } else {
-                acc.extend(", ".chars());
+                acc.push_str(", ");
             }
-            acc.extend(item.algorithm.chars());
+            acc.push_str(&item.algorithm);
             acc
         })
     );
diff --git a/http-signature-normalization-actix/src/digest/sha3.rs b/http-signature-normalization-actix/src/digest/sha3.rs
index 204de40..7322c3a 100644
--- a/http-signature-normalization-actix/src/digest/sha3.rs
+++ b/http-signature-normalization-actix/src/digest/sha3.rs
@@ -28,9 +28,9 @@ fn verify(digest: &mut impl sha2::Digest, name: &str, parts: &[DigestPart], byte
         parts.iter().fold(String::new(), |mut acc, item| {
             if acc.is_empty() {
             } else {
-                acc.extend(", ".chars());
+                acc.push_str(", ");
             }
-            acc.extend(item.algorithm.chars());
+            acc.push_str(&item.algorithm);
             acc
         })
     );
diff --git a/http-signature-normalization-actix/src/lib.rs b/http-signature-normalization-actix/src/lib.rs
index 400c35d..7471258 100644
--- a/http-signature-normalization-actix/src/lib.rs
+++ b/http-signature-normalization-actix/src/lib.rs
@@ -382,7 +382,7 @@ impl Config {
 
         let path_and_query = path_and_query
             .map(|p| p.to_string())
-            .unwrap_or(String::from("/"));
+            .unwrap_or_else(|| "/".to_string());
 
         let unsigned = self
             .config
@@ -405,7 +405,7 @@ impl Config {
 
         let path_and_query = path_and_query
             .map(|p| p.to_string())
-            .unwrap_or(String::from("/"));
+            .unwrap_or_else(|| "/".to_string());
 
         let unverified = self
             .config
diff --git a/http-signature-normalization-actix/src/middleware.rs b/http-signature-normalization-actix/src/middleware.rs
index efba818..4ee709c 100644
--- a/http-signature-normalization-actix/src/middleware.rs
+++ b/http-signature-normalization-actix/src/middleware.rs
@@ -130,7 +130,7 @@ where
             }
         };
 
-        let algorithm = unverified.algorithm().map(|a| a.clone());
+        let algorithm = unverified.algorithm().cloned();
         let key_id = unverified.key_id().to_owned();
 
         let f1 = unverified.verify(|signature, signing_string| {
@@ -158,12 +158,12 @@ where
 }
 
 impl HeaderKind {
-    pub fn is_authorization(&self) -> bool {
-        HeaderKind::Authorization == *self
+    pub fn is_authorization(self) -> bool {
+        HeaderKind::Authorization == self
     }
 
-    pub fn is_signature(&self) -> bool {
-        HeaderKind::Signature == *self
+    pub fn is_signature(self) -> bool {
+        HeaderKind::Signature == self
     }
 }
 
@@ -173,11 +173,7 @@ impl FromRequest for SignatureVerified {
     type Config = ();
 
     fn from_request(req: &HttpRequest, _: &mut Payload) -> Self::Future {
-        let res = req
-            .extensions()
-            .get::<Self>()
-            .map(|s| s.clone())
-            .ok_or(VerifyError);
+        let res = req.extensions().get::<Self>().cloned().ok_or(VerifyError);
 
         if res.is_err() {
             debug!("Failed to fetch SignatureVerified from request");
@@ -213,6 +209,7 @@ where
     }
 }
 
+type FutResult<T, E> = dyn Future<Output = Result<T, E>>;
 impl<T, S, B> Service for VerifyMiddleware<T, S>
 where
     T: SignatureVerify + Clone + 'static,
@@ -224,7 +221,7 @@ where
     type Request = ServiceRequest;
     type Response = ServiceResponse<B>;
     type Error = actix_web::Error;
-    type Future = Pin<Box<dyn Future<Output = Result<Self::Response, Self::Error>>>>;
+    type Future = Pin<Box<FutResult<Self::Response, Self::Error>>>;
 
     fn poll_ready(&mut self, cx: &mut Context) -> Poll<Result<(), Self::Error>> {
         self.0.poll_ready(cx)