Fix clippy warnings (#2217)

actix-files/src/files.rs

@@ -38,7 +38,7 @@ pub struct Files {
     mime_override: Option<Rc<MimeOverride>>,
     file_flags: named::Flags,
     use_guards: Option<Rc<dyn Guard>>,
-    guards: Vec<Box<Rc<dyn Guard>>>,
+    guards: Vec<Rc<dyn Guard>>,
     hidden_files: bool,
 }
 
@@ -199,7 +199,7 @@ impl Files {
     /// );
     /// ```
     pub fn guard<G: Guard + 'static>(mut self, guard: G) -> Self {
-        self.guards.push(Box::new(Rc::new(guard)));
+        self.guards.push(Rc::new(guard));
         self
     }
 
@@ -276,7 +276,7 @@ impl HttpServiceFactory for Files {
             Some(
                 guards
                     .into_iter()
-                    .map(|guard| -> Box<dyn Guard> { guard })
+                    .map(|guard| -> Box<dyn Guard> { Box::new(guard) })
                     .collect::<Vec<_>>(),
             )
         };

actix-http/src/response.rs

@@ -84,7 +84,7 @@ impl<B> Response<B> {
     pub fn with_body(status: StatusCode, body: B) -> Response<B> {
         Response {
             head: BoxedResponseHead::new(status),
-            body: body,
+            body,
         }
     }
 

benches/server.rs

@@ -1,4 +1,4 @@
-use actix_web::{test, web, App, HttpResponse};
+use actix_web::{web, App, HttpResponse};
 use awc::Client;
 use criterion::{criterion_group, criterion_main, Criterion};
 use futures_util::future::join_all;

tests/test_server.rs

@@ -901,7 +901,7 @@ async fn test_normalize() {
     let srv = actix_test::start_with(actix_test::config().h1(), || {
         App::new()
             .wrap(NormalizePath::new(TrailingSlash::Trim))
-            .service(web::resource("/one").route(web::to(|| HttpResponse::Ok())))
+            .service(web::resource("/one").route(web::to(HttpResponse::Ok)))
     });
 
     let response = srv.get("/one/").send().await.unwrap();