fix CI clippy warnings (#1664)

actix-files/src/lib.rs

@@ -1,6 +1,8 @@
-#![allow(clippy::borrow_interior_mutable_const, clippy::type_complexity)]
-
 //! Static files support
+
+#![deny(rust_2018_idioms)]
+#![allow(clippy::borrow_interior_mutable_const)]
+
 use std::cell::RefCell;
 use std::fmt::Write;
 use std::fs::{DirEntry, File};
@@ -62,6 +64,7 @@ pub struct ChunkedReadFile {
     size: u64,
     offset: u64,
     file: Option<File>,
+    #[allow(clippy::type_complexity)]
     fut:
         Option<LocalBoxFuture<'static, Result<(File, Bytes), BlockingError<io::Error>>>>,
     counter: u64,
@@ -72,7 +75,7 @@ impl Stream for ChunkedReadFile {
 
     fn poll_next(
         mut self: Pin<&mut Self>,
-        cx: &mut Context,
+        cx: &mut Context<'_>,
     ) -> Poll<Option<Self::Item>> {
         if let Some(ref mut fut) = self.fut {
             return match Pin::new(fut).poll(cx) {
@@ -224,7 +227,7 @@ fn directory_listing(
     ))
 }
 
-type MimeOverride = dyn Fn(&mime::Name) -> DispositionType;
+type MimeOverride = dyn Fn(&mime::Name<'_>) -> DispositionType;
 
 /// Static files handling
 ///
@@ -232,12 +235,10 @@ type MimeOverride = dyn Fn(&mime::Name) -> DispositionType;
 ///
 /// ```rust
 /// use actix_web::App;
-/// use actix_files as fs;
+/// use actix_files::Files;
 ///
-/// fn main() {
 /// let app = App::new()
-///         .service(fs::Files::new("/static", "."));
-/// }
+///     .service(Files::new("/static", "."));
 /// ```
 pub struct Files {
     path: String,
@@ -330,7 +331,7 @@ impl Files {
     /// Specifies mime override callback
     pub fn mime_override<F>(mut self, f: F) -> Self
     where
-        F: Fn(&mime::Name) -> DispositionType + 'static,
+        F: Fn(&mime::Name<'_>) -> DispositionType + 'static,
     {
         self.mime_override = Some(Rc::new(f));
         self
@@ -469,6 +470,7 @@ pub struct FilesService {
 }
 
 impl FilesService {
+    #[allow(clippy::type_complexity)]
     fn handle_err(
         &mut self,
         e: io::Error,
@@ -490,12 +492,13 @@ impl Service for FilesService {
     type Request = ServiceRequest;
     type Response = ServiceResponse;
     type Error = Error;
+    #[allow(clippy::type_complexity)]
     type Future = Either<
         Ready<Result<Self::Response, Self::Error>>,
         LocalBoxFuture<'static, Result<Self::Response, Self::Error>>,
     >;
 
-    fn poll_ready(&mut self, _: &mut Context) -> Poll<Result<(), Self::Error>> {
+    fn poll_ready(&mut self, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
         Poll::Ready(Ok(()))
     }
 
@@ -898,7 +901,7 @@ mod tests {
 
     #[actix_rt::test]
     async fn test_mime_override() {
-        fn all_attachment(_: &mime::Name) -> DispositionType {
+        fn all_attachment(_: &mime::Name<'_>) -> DispositionType {
             DispositionType::Attachment
         }
 

actix-http/src/body.rs

@@ -714,7 +714,7 @@ mod tests {
         let body = resp_body.downcast_ref::<String>().unwrap();
         assert_eq!(body, "hello cast");
         let body = &mut resp_body.downcast_mut::<String>().unwrap();
-        body.push_str("!");
+        body.push('!');
         let body = resp_body.downcast_ref::<String>().unwrap();
         assert_eq!(body, "hello cast!");
         let not_body = resp_body.downcast_ref::<()>();

actix-http/src/client/pool.rs

@@ -119,11 +119,11 @@ where
             match poll_fn(|cx| Poll::Ready(inner.borrow_mut().acquire(&key, cx))).await {
                 Acquire::Acquired(io, created) => {
                     // use existing connection
-                    return Ok(IoConnection::new(
+                    Ok(IoConnection::new(
                         io,
                         created,
                         Some(Acquired(key, Some(inner))),
-                    ));
+                    ))
                 }
                 Acquire::Available => {
                     // open tcp connection

actix-http/src/lib.rs

@@ -1,5 +1,6 @@
 //! Basic http primitives for actix-net framework.
-#![warn(rust_2018_idioms, warnings)]
+
+#![deny(rust_2018_idioms)]
 #![allow(
     clippy::type_complexity,
     clippy::too_many_arguments,

actix-http/src/macros.rs

@@ -87,7 +87,7 @@ mod tests {
         let body = resp_body.downcast_ref::<String>().unwrap();
         assert_eq!(body, "hello cast");
         let body = &mut resp_body.downcast_mut::<String>().unwrap();
-        body.push_str("!");
+        body.push('!');
         let body = resp_body.downcast_ref::<String>().unwrap();
         assert_eq!(body, "hello cast!");
         let not_body = resp_body.downcast_ref::<()>();

actix-multipart/src/lib.rs

@@ -1,5 +1,6 @@
 //! Multipart form support for Actix web.
 
+#![deny(rust_2018_idioms)]
 #![allow(clippy::borrow_interior_mutable_const)]
 
 mod error;

actix-multipart/src/server.rs

@@ -1,4 +1,5 @@
 //! Multipart payload support
+
 use std::cell::{Cell, RefCell, RefMut};
 use std::convert::TryFrom;
 use std::marker::PhantomData;
@@ -108,7 +109,7 @@ impl Stream for Multipart {
 
     fn poll_next(
         mut self: Pin<&mut Self>,
-        cx: &mut Context,
+        cx: &mut Context<'_>,
     ) -> Poll<Option<Self::Item>> {
         if let Some(err) = self.error.take() {
             Poll::Ready(Some(Err(err)))
@@ -244,7 +245,7 @@ impl InnerMultipart {
     fn poll(
         &mut self,
         safety: &Safety,
-        cx: &mut Context,
+        cx: &mut Context<'_>,
     ) -> Poll<Option<Result<Field, MultipartError>>> {
         if self.state == InnerState::Eof {
             Poll::Ready(None)
@@ -416,7 +417,10 @@ impl Field {
 impl Stream for Field {
     type Item = Result<Bytes, MultipartError>;
 
-    fn poll_next(self: Pin<&mut Self>, cx: &mut Context) -> Poll<Option<Self::Item>> {
+    fn poll_next(
+        self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+    ) -> Poll<Option<Self::Item>> {
         if self.safety.current() {
             let mut inner = self.inner.borrow_mut();
             if let Some(mut payload) =
@@ -434,7 +438,7 @@ impl Stream for Field {
 }
 
 impl fmt::Debug for Field {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         writeln!(f, "\nField: {}", self.ct)?;
         writeln!(f, "  boundary: {}", self.inner.borrow().boundary)?;
         writeln!(f, "  headers:")?;
@@ -689,7 +693,7 @@ impl Safety {
         self.clean.get()
     }
 
-    fn clone(&self, cx: &mut Context) -> Safety {
+    fn clone(&self, cx: &mut Context<'_>) -> Safety {
         let payload = Rc::clone(&self.payload);
         let s = Safety {
             task: LocalWaker::new(),
@@ -734,7 +738,7 @@ impl PayloadBuffer {
         }
     }
 
-    fn poll_stream(&mut self, cx: &mut Context) -> Result<(), PayloadError> {
+    fn poll_stream(&mut self, cx: &mut Context<'_>) -> Result<(), PayloadError> {
         loop {
             match Pin::new(&mut self.stream).poll_next(cx) {
                 Poll::Ready(Some(Ok(data))) => self.buf.extend_from_slice(&data),
@@ -887,7 +891,7 @@ mod tests {
 
         fn poll_next(
             self: Pin<&mut Self>,
-            cx: &mut Context,
+            cx: &mut Context<'_>,
         ) -> Poll<Option<Self::Item>> {
             let this = self.get_mut();
             if !this.ready {

actix-web-actors/src/lib.rs

@@ -1,5 +1,6 @@
 //! Actix actors integration for Actix web framework
 
+#![deny(rust_2018_idioms)]
 #![allow(clippy::borrow_interior_mutable_const)]
 
 mod context;

awc/src/lib.rs

@@ -1,4 +1,4 @@
-#![warn(rust_2018_idioms, warnings)]
+#![deny(rust_2018_idioms)]
 #![allow(
     clippy::type_complexity,
     clippy::borrow_interior_mutable_const,

awc/src/sender.rs

@@ -193,11 +193,7 @@ impl RequestSender {
             }
         };
 
-        SendClientRequest::new(
-            fut,
-            response_decompress,
-            timeout.or_else(|| config.timeout),
-        )
+        SendClientRequest::new(fut, response_decompress, timeout.or(config.timeout))
     }
 
     pub(crate) fn send_json<T: Serialize>(

src/lib.rs

@@ -1,4 +1,4 @@
-#![warn(rust_2018_idioms, warnings)]
+#![deny(rust_2018_idioms)]
 #![allow(clippy::needless_doctest_main, clippy::type_complexity)]
 
 //! Actix web is a powerful, pragmatic, and extremely fast web framework for Rust.