remove into<error> bounds on body types

fixes #2366

actix-http/CHANGES.md

@@ -3,6 +3,7 @@
 ## Unreleased - 2021-xx-xx
 ### Changes
 * Minimum supported Rust version (MSRV) is now 1.51.
+* Remove `Into<Error>` bound on `Encoder` body types.
 
 ### Fixed
 * Remove slice creation pointing to potential uninitialized data on h1 encoder. [#2364]

actix-http/src/body/message_body.rs

@@ -11,8 +11,6 @@ use bytes::{Bytes, BytesMut};
 use futures_core::ready;
 use pin_project_lite::pin_project;
 
-use crate::error::Error;
-
 use super::BodySize;
 
 /// An interface for response bodies.
@@ -47,7 +45,6 @@ impl MessageBody for () {
 impl<B> MessageBody for Box<B>
 where
     B: MessageBody + Unpin,
-    B::Error: Into<Error>,
 {
     type Error = B::Error;
 
@@ -66,7 +63,6 @@ where
 impl<B> MessageBody for Pin<Box<B>>
 where
     B: MessageBody,
-    B::Error: Into<Error>,
 {
     type Error = B::Error;
 

actix-http/src/encoding/encoder.rs

@@ -29,7 +29,7 @@ use crate::{
         header::{ContentEncoding, CONTENT_ENCODING},
         HeaderValue, StatusCode,
     },
-    Error, ResponseHead,
+    ResponseHead,
 };
 
 use super::Writer;
@@ -107,7 +107,6 @@ enum EncoderBody<B> {
 impl<B> MessageBody for EncoderBody<B>
 where
     B: MessageBody,
-    B::Error: Into<Error>,
 {
     type Error = EncoderError<B::Error>;
 
@@ -142,7 +141,6 @@ where
 impl<B> MessageBody for Encoder<B>
 where
     B: MessageBody,
-    B::Error: Into<Error>,
 {
     type Error = EncoderError<B::Error>;
 

src/middleware/mod.rs

@@ -53,7 +53,7 @@ mod tests {
         #[cfg(feature = "__compress")]
         {
             let _ = App::new().wrap(Compress::default()).wrap(Logger::default());
-            // let _ = App::new().wrap(Logger::default()).wrap(Compress::default());
+            let _ = App::new().wrap(Logger::default()).wrap(Compress::default());
             let _ = App::new().wrap(Compat::new(Compress::default()));
             let _ = App::new().wrap(Condition::new(true, Compat::new(Compress::default())));
         }