bump MSRV to 1.42 (#1616)

actix-http/src/body.rs

@@ -192,14 +192,8 @@ impl MessageBody for Body {
 impl PartialEq for Body {
     fn eq(&self, other: &Body) -> bool {
         match *self {
-            Body::None => match *other {
-                Body::None => true,
-                _ => false,
-            },
-            Body::Empty => match *other {
-                Body::Empty => true,
-                _ => false,
-            },
+            Body::None => matches!(*other, Body::None),
+            Body::Empty => matches!(*other, Body::Empty),
             Body::Bytes(ref b) => match *other {
                 Body::Bytes(ref b2) => b == b2,
                 _ => false,

actix-http/src/client/h2proto.rs

@@ -37,10 +37,7 @@ where
     trace!("Sending client request: {:?} {:?}", head, body.size());
     let head_req = head.as_ref().method == Method::HEAD;
     let length = body.size();
-    let eof = match length {
-        BodySize::None | BodySize::Empty | BodySize::Sized(0) => true,
-        _ => false,
-    };
+    let eof = matches!(length, BodySize::None | BodySize::Empty | BodySize::Sized(0));
 
     let mut req = Request::new(());
     *req.uri_mut() = head.as_ref().uri.clone();

actix-http/src/h1/decoder.rs

@@ -655,10 +655,7 @@ mod tests {
         }
 
         fn is_unhandled(&self) -> bool {
-            match self {
-                PayloadType::Stream(_) => true,
-                _ => false,
-            }
+            matches!(self, PayloadType::Stream(_))
         }
     }
 
@@ -670,10 +667,7 @@ mod tests {
             }
         }
         fn eof(&self) -> bool {
-            match *self {
-                PayloadItem::Eof => true,
-                _ => false,
-            }
+            matches!(*self, PayloadItem::Eof)
         }
     }
 

actix-http/src/h1/dispatcher.rs

@@ -156,14 +156,8 @@ enum PollResponse {
 impl PartialEq for PollResponse {
     fn eq(&self, other: &PollResponse) -> bool {
         match self {
-            PollResponse::DrainWriteBuf => match other {
-                PollResponse::DrainWriteBuf => true,
-                _ => false,
-            },
-            PollResponse::DoNothing => match other {
-                PollResponse::DoNothing => true,
-                _ => false,
-            },
+            PollResponse::DrainWriteBuf => matches!(other, PollResponse::DrainWriteBuf),
+            PollResponse::DoNothing => matches!(other, PollResponse::DoNothing),
             _ => false,
         }
     }

actix-http/src/header/common/content_disposition.rs

@@ -387,26 +387,17 @@ impl ContentDisposition {
 
     /// Returns `true` if it is [`Inline`](DispositionType::Inline).
     pub fn is_inline(&self) -> bool {
-        match self.disposition {
-            DispositionType::Inline => true,
-            _ => false,
-        }
+        matches!(self.disposition, DispositionType::Inline)
     }
 
     /// Returns `true` if it is [`Attachment`](DispositionType::Attachment).
     pub fn is_attachment(&self) -> bool {
-        match self.disposition {
-            DispositionType::Attachment => true,
-            _ => false,
-        }
+        matches!(self.disposition, DispositionType::Attachment)
     }
 
     /// Returns `true` if it is [`FormData`](DispositionType::FormData).
     pub fn is_form_data(&self) -> bool {
-        match self.disposition {
-            DispositionType::FormData => true,
-            _ => false,
-        }
+        matches!(self.disposition, DispositionType::FormData)
     }
 
     /// Returns `true` if it is [`Ext`](DispositionType::Ext) and the `disp_type` matches.

actix-http/src/header/mod.rs

@@ -148,10 +148,7 @@ impl ContentEncoding {
     #[inline]
     /// Is the content compressed?
     pub fn is_compression(self) -> bool {
-        match self {
-            ContentEncoding::Identity | ContentEncoding::Auto => false,
-            _ => true,
-        }
+        matches!(self, ContentEncoding::Identity | ContentEncoding::Auto)
     }
 
     #[inline]

actix-http/src/ws/frame.rs

@@ -229,10 +229,7 @@ mod tests {
     fn is_none(
         frm: &Result<Option<(bool, OpCode, Option<BytesMut>)>, ProtocolError>,
     ) -> bool {
-        match *frm {
-            Ok(None) => true,
-            _ => false,
-        }
+        matches!(*frm, Ok(None))
     }
 
     fn extract(