add IntoResponseFailed to existing fallible responses

axum-extra/src/protobuf.rs

@@ -3,7 +3,7 @@
 use axum::{
     async_trait,
     extract::{rejection::BytesRejection, FromRequest, Request},
-    response::{IntoResponse, Response},
+    response::{IntoResponse, IntoResponseFailed, Response},
 };
 use bytes::{Bytes, BytesMut};
 use http::StatusCode;
@@ -124,7 +124,12 @@ where
         let mut buf = BytesMut::with_capacity(128);
         match &self.0.encode(&mut buf) {
             Ok(()) => buf.into_response(),
-            Err(err) => (StatusCode::INTERNAL_SERVER_ERROR, err.to_string()).into_response(),
+            Err(err) => (
+                StatusCode::INTERNAL_SERVER_ERROR,
+                IntoResponseFailed,
+                err.to_string(),
+            )
+                .into_response(),
         }
     }
 }

axum-extra/src/response/erased_json.rs

@@ -2,7 +2,7 @@ use std::sync::Arc;
 
 use axum::{
     http::{header, HeaderValue, StatusCode},
-    response::{IntoResponse, Response},
+    response::{IntoResponse, IntoResponseFailed, Response},
 };
 use bytes::{BufMut, Bytes, BytesMut};
 use serde::Serialize;
@@ -68,7 +68,12 @@ impl IntoResponse for ErasedJson {
                 bytes,
             )
                 .into_response(),
-            Err(err) => (StatusCode::INTERNAL_SERVER_ERROR, err.to_string()).into_response(),
+            Err(err) => (
+                StatusCode::INTERNAL_SERVER_ERROR,
+                IntoResponseFailed,
+                err.to_string(),
+            )
+                .into_response(),
         }
     }
 }

axum/src/form.rs

@@ -1,7 +1,7 @@
 use crate::extract::Request;
 use crate::extract::{rejection::*, FromRequest, RawForm};
 use async_trait::async_trait;
-use axum_core::response::{IntoResponse, Response};
+use axum_core::response::{IntoResponse, IntoResponseFailed, Response};
 use axum_core::RequestExt;
 use http::header::CONTENT_TYPE;
 use http::StatusCode;
@@ -115,7 +115,12 @@ where
                 body,
             )
                 .into_response(),
-            Err(err) => (StatusCode::INTERNAL_SERVER_ERROR, err.to_string()).into_response(),
+            Err(err) => (
+                StatusCode::INTERNAL_SERVER_ERROR,
+                IntoResponseFailed,
+                err.to_string(),
+            )
+                .into_response(),
         }
     }
 }

axum/src/response/mod.rs

@@ -21,7 +21,8 @@ pub use crate::Extension;
 
 #[doc(inline)]
 pub use axum_core::response::{
-    AppendHeaders, ErrorResponse, IntoResponse, IntoResponseParts, Response, ResponseParts, Result,
+    AppendHeaders, ErrorResponse, IntoResponse, IntoResponseFailed, IntoResponseParts, Response,
+    ResponseParts, Result,
 };
 
 #[doc(inline)]