Merge branch 'master' into feat/field-in-deserialize-error

2024-11-27 09:42:57 +01:00 · 2024-08-27 12:01:02 +07:00 · 2024-08-27 12:01:02 +07:00 · b47f65063b
commit b47f65063b
parent ea19d26724 b52e77beb4
88 changed files with 1049 additions and 401 deletions
--- a/.clippy.toml
+++ b/.clippy.toml
@ -0,0 +1,7 @@
+disallowed-names = [
+    "e", # no single letter error bindings
+]
+disallowed-methods = [
+    "std::cell::RefCell::default()",
+    "std::rc::Rc::default()",
+]
--- a/.github/workflows/ci-post-merge.yml
+++ b/.github/workflows/ci-post-merge.yml
@ -49,7 +49,7 @@ jobs:
          toolchain: ${{ matrix.version.version }}

      - name: Install just, cargo-hack, cargo-nextest, cargo-ci-cache-clean
-        uses: taiki-e/install-action@v2.41.10
+        uses: taiki-e/install-action@v2.42.33
        with:
          tool: just,cargo-hack,cargo-nextest,cargo-ci-cache-clean

@ -83,7 +83,7 @@ jobs:
        uses: actions-rust-lang/setup-rust-toolchain@v1.9.0

      - name: Install just, cargo-hack
-        uses: taiki-e/install-action@v2.41.10
+        uses: taiki-e/install-action@v2.42.33
        with:
          tool: just,cargo-hack

--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@ -64,7 +64,7 @@ jobs:
          toolchain: ${{ matrix.version.version }}

      - name: Install just, cargo-hack, cargo-nextest, cargo-ci-cache-clean
-        uses: taiki-e/install-action@v2.41.10
+        uses: taiki-e/install-action@v2.42.33
        with:
          tool: just,cargo-hack,cargo-nextest,cargo-ci-cache-clean

@ -113,7 +113,7 @@ jobs:
          toolchain: nightly

      - name: Install just
-        uses: taiki-e/install-action@v2.41.10
+        uses: taiki-e/install-action@v2.42.33
        with:
          tool: just

--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@ -24,7 +24,7 @@ jobs:
          components: llvm-tools

      - name: Install just, cargo-llvm-cov, cargo-nextest
-        uses: taiki-e/install-action@v2.41.10
+        uses: taiki-e/install-action@v2.42.33
        with:
          tool: just,cargo-llvm-cov,cargo-nextest

--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@ -76,7 +76,7 @@ jobs:
          toolchain: nightly-2024-05-01

      - name: Install just
-        uses: taiki-e/install-action@v2.41.10
+        uses: taiki-e/install-action@v2.42.33
        with:
          tool: just

@ -105,7 +105,7 @@ jobs:
          toolchain: nightly-2024-06-07

      - name: Install cargo-public-api
-        uses: taiki-e/install-action@v2.41.10
+        uses: taiki-e/install-action@v2.42.33
        with:
          tool: cargo-public-api

--- a/Cargo.toml
+++ b/Cargo.toml
@ -19,7 +19,7 @@ homepage = "https://actix.rs"
 repository = "https://github.com/actix/actix-web"
 license = "MIT OR Apache-2.0"
 edition = "2021"
-rust-version = "1.72"
+rust-version = "1.75"

 [profile.dev]
 # Disabling debug info speeds up builds a bunch and we don't rely on it for debugging that much.
--- a/actix-files/CHANGES.md
+++ b/actix-files/CHANGES.md
@ -2,6 +2,8 @@

 ## Unreleased

+- Minimum supported Rust version (MSRV) is now 1.75.
+
 ## 0.6.6

 - Update `tokio-uring` dependency to `0.4`.
--- a/actix-files/Cargo.toml
+++ b/actix-files/Cargo.toml
@ -33,7 +33,7 @@ actix-web = { version = "4", default-features = false }

 bitflags = "2"
 bytes = "1"
-derive_more = "0.99.5"
+derive_more = { version = "1", features = ["display", "error", "from"] }
 futures-core = { version = "0.3.17", default-features = false, features = ["alloc"] }
 http-range = "0.1.4"
 log = "0.4"
--- a/actix-files/src/error.rs
+++ b/actix-files/src/error.rs
@ -1,16 +1,16 @@
 use actix_web::{http::StatusCode, ResponseError};
-use derive_more::Display;
+use derive_more::derive::Display;

 /// Errors which can occur when serving static files.
 #[derive(Debug, PartialEq, Eq, Display)]
 pub enum FilesError {
    /// Path is not a directory.
    #[allow(dead_code)]
-    #[display(fmt = "path is not a directory. Unable to serve static files")]
+    #[display("path is not a directory. Unable to serve static files")]
    IsNotDirectory,

    /// Cannot render directory.
-    #[display(fmt = "unable to render directory without index file")]
+    #[display("unable to render directory without index file")]
    IsDirectory,
 }

@ -25,19 +25,19 @@ impl ResponseError for FilesError {
 #[non_exhaustive]
 pub enum UriSegmentError {
    /// Segment started with the wrapped invalid character.
-    #[display(fmt = "segment started with invalid character: ('{_0}')")]
+    #[display("segment started with invalid character: ('{_0}')")]
    BadStart(char),

    /// Segment contained the wrapped invalid character.
-    #[display(fmt = "segment contained invalid character ('{_0}')")]
+    #[display("segment contained invalid character ('{_0}')")]
    BadChar(char),

    /// Segment ended with the wrapped invalid character.
-    #[display(fmt = "segment ended with invalid character: ('{_0}')")]
+    #[display("segment ended with invalid character: ('{_0}')")]
    BadEnd(char),

    /// Path is not a valid UTF-8 string after percent-decoding.
-    #[display(fmt = "path is not a valid UTF-8 string after percent-decoding")]
+    #[display("path is not a valid UTF-8 string after percent-decoding")]
    NotValidUtf8,
 }

--- a/actix-files/src/named.rs
+++ b/actix-files/src/named.rs
@ -21,7 +21,7 @@ use actix_web::{
    Error, HttpMessage, HttpRequest, HttpResponse, Responder,
 };
 use bitflags::bitflags;
-use derive_more::{Deref, DerefMut};
+use derive_more::derive::{Deref, DerefMut};
 use futures_core::future::LocalBoxFuture;
 use mime::Mime;

--- a/actix-files/src/range.rs
+++ b/actix-files/src/range.rs
@ -1,6 +1,6 @@
 use std::fmt;

-use derive_more::Error;
+use derive_more::derive::Error;

 /// Copy of `http_range::HttpRangeParseError`.
 #[derive(Debug, Clone)]
--- a/actix-files/src/service.rs
+++ b/actix-files/src/service.rs
@ -79,7 +79,7 @@ impl FilesService {

        let (req, _) = req.into_parts();

-        (self.renderer)(&dir, &req).unwrap_or_else(|e| ServiceResponse::from_err(e, req))
+        (self.renderer)(&dir, &req).unwrap_or_else(|err| ServiceResponse::from_err(err, req))
    }
 }

--- a/actix-http-test/src/lib.rs
+++ b/actix-http-test/src/lib.rs
@ -106,7 +106,7 @@ pub async fn test_server_with_addr<F: ServerServiceFactory<TcpStream>>(
            builder.set_verify(SslVerifyMode::NONE);
            let _ = builder
                .set_alpn_protos(b"\x02h2\x08http/1.1")
-                .map_err(|e| log::error!("Can not set alpn protocol: {:?}", e));
+                .map_err(|err| log::error!("Can not set ALPN protocol: {err}"));

            Connector::new()
                .conn_lifetime(Duration::from_secs(0))
--- a/actix-http/CHANGES.md
+++ b/actix-http/CHANGES.md
@ -2,6 +2,10 @@

 ## Unreleased

+- Minimum supported Rust version (MSRV) is now 1.75.
+
+## 3.9.0
+
 ### Added

 - Implement `FromIterator<(HeaderName, HeaderValue)>` for `HeaderMap`.
--- a/actix-http/Cargo.toml
+++ b/actix-http/Cargo.toml
@ -1,6 +1,6 @@
 [package]
 name = "actix-http"
-version = "3.8.0"
+version = "3.9.0"
 authors = [
    "Nikolay Kim <fafhrd91@gmail.com>",
    "Rob Ede <robjtede@icloud.com>",
@ -110,7 +110,7 @@ ahash = "0.8"
 bitflags = "2"
 bytes = "1"
 bytestring = "1"
-derive_more = "0.99.5"
+derive_more = { version = "1", features = ["as_ref", "deref", "deref_mut", "display", "error", "from"] }
 encoding_rs = "0.8"
 futures-core = { version = "0.3.17", default-features = false, features = ["alloc"] }
 http = "0.2.7"
@ -160,7 +160,7 @@ rcgen = "0.13"
 regex = "1.3"
 rustversion = "1"
 rustls-pemfile = "2"
-serde = { version = "1.0", features = ["derive"] }
+serde = { version = "1", features = ["derive"] }
 serde_json = "1.0"
 static_assertions = "1"
 tls-openssl = { package = "openssl", version = "0.10.55" }
--- a/actix-http/README.md
+++ b/actix-http/README.md
@ -5,11 +5,11 @@
 <!-- prettier-ignore-start -->

 [![crates.io](https://img.shields.io/crates/v/actix-http?label=latest)](https://crates.io/crates/actix-http)
-[![Documentation](https://docs.rs/actix-http/badge.svg?version=3.8.0)](https://docs.rs/actix-http/3.8.0)
+[![Documentation](https://docs.rs/actix-http/badge.svg?version=3.9.0)](https://docs.rs/actix-http/3.9.0)
 ![Version](https://img.shields.io/badge/rustc-1.72+-ab6000.svg)
 ![MIT or Apache 2.0 licensed](https://img.shields.io/crates/l/actix-http.svg)
 <br />
-[![dependency status](https://deps.rs/crate/actix-http/3.8.0/status.svg)](https://deps.rs/crate/actix-http/3.8.0)
+[![dependency status](https://deps.rs/crate/actix-http/3.9.0/status.svg)](https://deps.rs/crate/actix-http/3.9.0)
 [![Download](https://img.shields.io/crates/d/actix-http.svg)](https://crates.io/crates/actix-http)
 [![Chat on Discord](https://img.shields.io/discord/771444961383153695?label=chat&logo=discord)](https://discord.gg/NWpN5mmg3x)

--- a/actix-http/examples/actix-web.rs
+++ b/actix-http/examples/actix-web.rs
@ -1,10 +1,10 @@
 use actix_http::HttpService;
 use actix_server::Server;
 use actix_service::map_config;
-use actix_web::{dev::AppConfig, get, App};
+use actix_web::{dev::AppConfig, get, App, Responder};

 #[get("/")]
-async fn index() -> &'static str {
+async fn index() -> impl Responder {
    "Hello, world. From Actix Web!"
 }

--- a/actix-http/examples/echo.rs
+++ b/actix-http/examples/echo.rs
@ -23,7 +23,7 @@ async fn main() -> io::Result<()> {
                        body.extend_from_slice(&item?);
                    }

-                    info!("request body: {:?}", body);
+                    info!("request body: {body:?}");

                    let res = Response::build(StatusCode::OK)
                        .insert_header(("x-head", HeaderValue::from_static("dummy value!")))
@ -31,8 +31,7 @@ async fn main() -> io::Result<()> {

                    Ok::<_, Error>(res)
                })
-                // No TLS
-                .tcp()
+                .tcp() // No TLS
        })?
        .run()
        .await
--- a/actix-http/examples/hello-world.rs
+++ b/actix-http/examples/hello-world.rs
@ -17,7 +17,7 @@ async fn main() -> io::Result<()> {
                    ext.insert(42u32);
                })
                .finish(|req: Request| async move {
-                    info!("{:?}", req);
+                    info!("{req:?}");

                    let mut res = Response::build(StatusCode::OK);
                    res.insert_header(("x-head", HeaderValue::from_static("dummy value!")));
--- a/actix-http/examples/streaming-error.rs
+++ b/actix-http/examples/streaming-error.rs
@ -22,16 +22,16 @@ async fn main() -> io::Result<()> {
        .bind("streaming-error", ("127.0.0.1", 8080), || {
            HttpService::build()
                .finish(|req| async move {
-                    info!("{:?}", req);
+                    info!("{req:?}");
                    let res = Response::ok();

                    Ok::<_, Infallible>(res.set_body(BodyStream::new(stream! {
                        yield Ok(Bytes::from("123"));
                        yield Ok(Bytes::from("456"));

-                        actix_rt::time::sleep(Duration::from_millis(1000)).await;
+                        actix_rt::time::sleep(Duration::from_secs(1)).await;

-                        yield Err(io::Error::new(io::ErrorKind::Other, ""));
+                        yield Err(io::Error::new(io::ErrorKind::Other, "abc"));
                    })))
                })
                .tcp()
--- a/actix-http/examples/ws.rs
+++ b/actix-http/examples/ws.rs
@ -17,7 +17,6 @@ use bytes::{Bytes, BytesMut};
 use bytestring::ByteString;
 use futures_core::{ready, Stream};
 use tokio_util::codec::Encoder;
-use tracing::{info, trace};

 #[actix_rt::main]
 async fn main() -> io::Result<()> {
@ -37,12 +36,12 @@ async fn main() -> io::Result<()> {
 }

 async fn handler(req: Request) -> Result<Response<BodyStream<Heartbeat>>, Error> {
-    info!("handshaking");
+    tracing::info!("handshaking");
    let mut res = ws::handshake(req.head())?;

    // handshake will always fail under HTTP/2

-    info!("responding");
+    tracing::info!("responding");
    res.message_body(BodyStream::new(Heartbeat::new(ws::Codec::new())))
 }

@ -64,7 +63,7 @@ impl Stream for Heartbeat {
    type Item = Result<Bytes, Error>;

    fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
-        trace!("poll");
+        tracing::trace!("poll");

        ready!(self.as_mut().interval.poll_tick(cx));

--- a/actix-http/src/body/body_stream.rs
+++ b/actix-http/src/body/body_stream.rs
@ -75,7 +75,7 @@ mod tests {
        time::{sleep, Sleep},
    };
    use actix_utils::future::poll_fn;
-    use derive_more::{Display, Error};
+    use derive_more::derive::{Display, Error};
    use futures_core::ready;
    use futures_util::{stream, FutureExt as _};
    use pin_project_lite::pin_project;
@ -131,7 +131,7 @@ mod tests {
        assert_eq!(to_bytes(body).await.ok(), Some(Bytes::from("12")));
    }
    #[derive(Debug, Display, Error)]
-    #[display(fmt = "stream error")]
+    #[display("stream error")]
    struct StreamErr;

    #[actix_rt::test]
--- a/actix-http/src/body/utils.rs
+++ b/actix-http/src/body/utils.rs
@ -3,7 +3,7 @@ use std::task::Poll;
 use actix_rt::pin;
 use actix_utils::future::poll_fn;
 use bytes::{Bytes, BytesMut};
-use derive_more::{Display, Error};
+use derive_more::derive::{Display, Error};
 use futures_core::ready;

 use super::{BodySize, MessageBody};
@ -38,7 +38,7 @@ pub async fn to_bytes<B: MessageBody>(body: B) -> Result<Bytes, B::Error> {

 /// Error type returned from [`to_bytes_limited`] when body produced exceeds limit.
 #[derive(Debug, Display, Error)]
-#[display(fmt = "limit exceeded while collecting body bytes")]
+#[display("limit exceeded while collecting body bytes")]
 #[non_exhaustive]
 pub struct BodyLimitExceeded;

--- a/actix-http/src/encoding/encoder.rs
+++ b/actix-http/src/encoding/encoder.rs
@ -10,7 +10,7 @@ use std::{

 use actix_rt::task::{spawn_blocking, JoinHandle};
 use bytes::Bytes;
-use derive_more::Display;
+use derive_more::derive::Display;
 #[cfg(feature = "compress-gzip")]
 use flate2::write::{GzEncoder, ZlibEncoder};
 use futures_core::ready;
@ -415,11 +415,11 @@ fn new_brotli_compressor() -> Box<brotli::CompressorWriter<Writer>> {
 #[non_exhaustive]
 pub enum EncoderError {
    /// Wrapped body stream error.
-    #[display(fmt = "body")]
+    #[display("body")]
    Body(Box<dyn StdError>),

    /// Generic I/O error.
-    #[display(fmt = "io")]
+    #[display("io")]
    Io(io::Error),
 }

--- a/actix-http/src/error.rs
+++ b/actix-http/src/error.rs
@ -2,7 +2,7 @@

 use std::{error::Error as StdError, fmt, io, str::Utf8Error, string::FromUtf8Error};

-use derive_more::{Display, Error, From};
+use derive_more::derive::{Display, Error, From};
 pub use http::{status::InvalidStatusCode, Error as HttpError};
 use http::{uri::InvalidUri, StatusCode};

@ -80,28 +80,28 @@ impl From<Error> for Response<BoxBody> {

 #[derive(Debug, Clone, Copy, PartialEq, Eq, Display)]
 pub(crate) enum Kind {
-    #[display(fmt = "error processing HTTP")]
+    #[display("error processing HTTP")]
    Http,

-    #[display(fmt = "error parsing HTTP message")]
+    #[display("error parsing HTTP message")]
    Parse,

-    #[display(fmt = "request payload read error")]
+    #[display("request payload read error")]
    Payload,

-    #[display(fmt = "response body write error")]
+    #[display("response body write error")]
    Body,

-    #[display(fmt = "send response error")]
+    #[display("send response error")]
    SendResponse,

-    #[display(fmt = "error in WebSocket process")]
+    #[display("error in WebSocket process")]
    Ws,

-    #[display(fmt = "connection error")]
+    #[display("connection error")]
    Io,

-    #[display(fmt = "encoder error")]
+    #[display("encoder error")]
    Encoder,
 }

@ -160,44 +160,44 @@ impl From<crate::ws::ProtocolError> for Error {
 #[non_exhaustive]
 pub enum ParseError {
    /// An invalid `Method`, such as `GE.T`.
-    #[display(fmt = "invalid method specified")]
+    #[display("invalid method specified")]
    Method,

    /// An invalid `Uri`, such as `exam ple.domain`.
-    #[display(fmt = "URI error: {}", _0)]
+    #[display("URI error: {}", _0)]
    Uri(InvalidUri),

    /// An invalid `HttpVersion`, such as `HTP/1.1`
-    #[display(fmt = "invalid HTTP version specified")]
+    #[display("invalid HTTP version specified")]
    Version,

    /// An invalid `Header`.
-    #[display(fmt = "invalid Header provided")]
+    #[display("invalid Header provided")]
    Header,

    /// A message head is too large to be reasonable.
-    #[display(fmt = "message head is too large")]
+    #[display("message head is too large")]
    TooLarge,

    /// A message reached EOF, but is not complete.
-    #[display(fmt = "message is incomplete")]
+    #[display("message is incomplete")]
    Incomplete,

    /// An invalid `Status`, such as `1337 ELITE`.
-    #[display(fmt = "invalid status provided")]
+    #[display("invalid status provided")]
    Status,

    /// A timeout occurred waiting for an IO event.
    #[allow(dead_code)]
-    #[display(fmt = "timeout")]
+    #[display("timeout")]
    Timeout,

    /// An I/O error that occurred while trying to read or write to a network stream.
-    #[display(fmt = "I/O error: {}", _0)]
+    #[display("I/O error: {}", _0)]
    Io(io::Error),

    /// Parsing a field as string failed.
-    #[display(fmt = "UTF-8 error: {}", _0)]
+    #[display("UTF-8 error: {}", _0)]
    Utf8(Utf8Error),
 }

@ -256,28 +256,28 @@ impl From<ParseError> for Response<BoxBody> {
 #[non_exhaustive]
 pub enum PayloadError {
    /// A payload reached EOF, but is not complete.
-    #[display(fmt = "payload reached EOF before completing: {:?}", _0)]
+    #[display("payload reached EOF before completing: {:?}", _0)]
    Incomplete(Option<io::Error>),

    /// Content encoding stream corruption.
-    #[display(fmt = "can not decode content-encoding")]
+    #[display("can not decode content-encoding")]
    EncodingCorrupted,

    /// Payload reached size limit.
-    #[display(fmt = "payload reached size limit")]
+    #[display("payload reached size limit")]
    Overflow,

    /// Payload length is unknown.
-    #[display(fmt = "payload length is unknown")]
+    #[display("payload length is unknown")]
    UnknownLength,

    /// HTTP/2 payload error.
    #[cfg(feature = "http2")]
-    #[display(fmt = "{}", _0)]
+    #[display("{}", _0)]
    Http2Payload(::h2::Error),

    /// Generic I/O error.
-    #[display(fmt = "{}", _0)]
+    #[display("{}", _0)]
    Io(io::Error),
 }

@ -326,44 +326,44 @@ impl From<PayloadError> for Error {
 #[non_exhaustive]
 pub enum DispatchError {
    /// Service error.
-    #[display(fmt = "service error")]
+    #[display("service error")]
    Service(Response<BoxBody>),

    /// Body streaming error.
-    #[display(fmt = "body error: {}", _0)]
+    #[display("body error: {}", _0)]
    Body(Box<dyn StdError>),

    /// Upgrade service error.
-    #[display(fmt = "upgrade error")]
+    #[display("upgrade error")]
    Upgrade,

    /// An `io::Error` that occurred while trying to read or write to a network stream.
-    #[display(fmt = "I/O error: {}", _0)]
+    #[display("I/O error: {}", _0)]
    Io(io::Error),

    /// Request parse error.
-    #[display(fmt = "request parse error: {}", _0)]
+    #[display("request parse error: {}", _0)]
    Parse(ParseError),

    /// HTTP/2 error.
-    #[display(fmt = "{}", _0)]
+    #[display("{}", _0)]
    #[cfg(feature = "http2")]
    H2(h2::Error),

    /// The first request did not complete within the specified timeout.
-    #[display(fmt = "request did not complete within the specified timeout")]
+    #[display("request did not complete within the specified timeout")]
    SlowRequestTimeout,

    /// Disconnect timeout. Makes sense for TLS streams.
-    #[display(fmt = "connection shutdown timeout")]
+    #[display("connection shutdown timeout")]
    DisconnectTimeout,

    /// Handler dropped payload before reading EOF.
-    #[display(fmt = "handler dropped payload before reading EOF")]
+    #[display("handler dropped payload before reading EOF")]
    HandlerDroppedPayload,

    /// Internal error.
-    #[display(fmt = "internal error")]
+    #[display("internal error")]
    InternalError,
 }

@ -389,11 +389,11 @@ impl StdError for DispatchError {
 #[non_exhaustive]
 pub enum ContentTypeError {
    /// Can not parse content type.
-    #[display(fmt = "could not parse content type")]
+    #[display("could not parse content type")]
    ParseError,

    /// Unknown content encoding.
-    #[display(fmt = "unknown content encoding")]
+    #[display("unknown content encoding")]
    UnknownEncoding,
 }

--- a/actix-http/src/h1/encoder.rs
+++ b/actix-http/src/h1/encoder.rs
@ -313,7 +313,7 @@ impl MessageType for RequestHeadType {
                _ => return Err(io::Error::new(io::ErrorKind::Other, "unsupported version")),
            }
        )
-        .map_err(|e| io::Error::new(io::ErrorKind::Other, e))
+        .map_err(|err| io::Error::new(io::ErrorKind::Other, err))
    }
 }

@ -433,7 +433,7 @@ impl TransferEncoding {
                    buf.extend_from_slice(b"0\r\n\r\n");
                } else {
                    writeln!(helpers::MutWriter(buf), "{:X}\r", msg.len())
-                        .map_err(|e| io::Error::new(io::ErrorKind::Other, e))?;
+                        .map_err(|err| io::Error::new(io::ErrorKind::Other, err))?;

                    buf.reserve(msg.len() + 2);
                    buf.extend_from_slice(msg);
--- a/actix-http/src/h1/service.rs
+++ b/actix-http/src/h1/service.rs
@ -480,15 +480,15 @@ where
        let cfg = self.cfg.clone();

        Box::pin(async move {
-            let expect = expect
-                .await
-                .map_err(|e| error!("Init http expect service error: {:?}", e))?;
+            let expect = expect.await.map_err(|err| {
+                tracing::error!("Initialization of HTTP expect service error: {err:?}");
+            })?;

            let upgrade = match upgrade {
                Some(upgrade) => {
-                    let upgrade = upgrade
-                        .await
-                        .map_err(|e| error!("Init http upgrade service error: {:?}", e))?;
+                    let upgrade = upgrade.await.map_err(|err| {
+                        tracing::error!("Initialization of HTTP upgrade service error: {err:?}");
+                    })?;
                    Some(upgrade)
                }
                None => None,
@ -496,7 +496,7 @@ where

            let service = service
                .await
-                .map_err(|e| error!("Init http service error: {:?}", e))?;
+                .map_err(|err| error!("Initialization of HTTP service error: {err:?}"))?;

            Ok(H1ServiceHandler::new(
                cfg,
--- a/actix-http/src/header/shared/content_encoding.rs
+++ b/actix-http/src/header/shared/content_encoding.rs
@ -1,6 +1,6 @@
 use std::str::FromStr;

-use derive_more::{Display, Error};
+use derive_more::derive::{Display, Error};
 use http::header::InvalidHeaderValue;

 use crate::{
@ -11,7 +11,7 @@ use crate::{

 /// Error returned when a content encoding is unknown.
 #[derive(Debug, Display, Error)]
-#[display(fmt = "unsupported content encoding")]
+#[display("unsupported content encoding")]
 pub struct ContentEncodingParseError;

 /// Represents a supported content encoding.
--- a/actix-http/src/header/shared/quality.rs
+++ b/actix-http/src/header/shared/quality.rs
@ -1,6 +1,6 @@
 use std::fmt;

-use derive_more::{Display, Error};
+use derive_more::derive::{Display, Error};

 const MAX_QUALITY_INT: u16 = 1000;
 const MAX_QUALITY_FLOAT: f32 = 1.0;
@ -125,7 +125,7 @@ pub fn itoa_fmt<W: fmt::Write, V: itoa::Integer>(mut wr: W, value: V) -> fmt::Re
 }

 #[derive(Debug, Clone, Display, Error)]
-#[display(fmt = "quality out of bounds")]
+#[display("quality out of bounds")]
 #[non_exhaustive]
 pub struct QualityOutOfBounds;

--- a/actix-http/src/service.rs
+++ b/actix-http/src/service.rs
@ -775,23 +775,23 @@ where
        let cfg = self.cfg.clone();

        Box::pin(async move {
-            let expect = expect
-                .await
-                .map_err(|e| error!("Init http expect service error: {:?}", e))?;
+            let expect = expect.await.map_err(|err| {
+                tracing::error!("Initialization of HTTP expect service error: {err:?}");
+            })?;

            let upgrade = match upgrade {
                Some(upgrade) => {
-                    let upgrade = upgrade
-                        .await
-                        .map_err(|e| error!("Init http upgrade service error: {:?}", e))?;
+                    let upgrade = upgrade.await.map_err(|err| {
+                        tracing::error!("Initialization of HTTP upgrade service error: {err:?}");
+                    })?;
                    Some(upgrade)
                }
                None => None,
            };

-            let service = service
-                .await
-                .map_err(|e| error!("Init http service error: {:?}", e))?;
+            let service = service.await.map_err(|err| {
+                tracing::error!("Initialization of HTTP service error: {err:?}");
+            })?;

            Ok(HttpServiceHandler::new(
                cfg,
--- a/actix-http/src/ws/dispatcher.rs
+++ b/actix-http/src/ws/dispatcher.rs
@ -114,14 +114,14 @@ mod inner {
    {
        fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
            match *self {
-                DispatcherError::Service(ref e) => {
-                    write!(fmt, "DispatcherError::Service({:?})", e)
+                DispatcherError::Service(ref err) => {
+                    write!(fmt, "DispatcherError::Service({err:?})")
                }
-                DispatcherError::Encoder(ref e) => {
-                    write!(fmt, "DispatcherError::Encoder({:?})", e)
+                DispatcherError::Encoder(ref err) => {
+                    write!(fmt, "DispatcherError::Encoder({err:?})")
                }
-                DispatcherError::Decoder(ref e) => {
-                    write!(fmt, "DispatcherError::Decoder({:?})", e)
+                DispatcherError::Decoder(ref err) => {
+                    write!(fmt, "DispatcherError::Decoder({err:?})")
                }
            }
        }
@ -136,9 +136,9 @@ mod inner {
    {
        fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
            match *self {
-                DispatcherError::Service(ref e) => write!(fmt, "{}", e),
-                DispatcherError::Encoder(ref e) => write!(fmt, "{:?}", e),
-                DispatcherError::Decoder(ref e) => write!(fmt, "{:?}", e),
+                DispatcherError::Service(ref err) => write!(fmt, "{err}"),
+                DispatcherError::Encoder(ref err) => write!(fmt, "{err:?}"),
+                DispatcherError::Decoder(ref err) => write!(fmt, "{err:?}"),
            }
        }
    }
--- a/actix-http/src/ws/mod.rs
+++ b/actix-http/src/ws/mod.rs
@ -5,7 +5,7 @@

 use std::io;

-use derive_more::{Display, Error, From};
+use derive_more::derive::{Display, Error, From};
 use http::{header, Method, StatusCode};

 use crate::{body::BoxBody, header::HeaderValue, RequestHead, Response, ResponseBuilder};
@ -27,43 +27,43 @@ pub use self::{
 #[derive(Debug, Display, Error, From)]
 pub enum ProtocolError {
    /// Received an unmasked frame from client.
-    #[display(fmt = "received an unmasked frame from client")]
+    #[display("received an unmasked frame from client")]
    UnmaskedFrame,

    /// Received a masked frame from server.
-    #[display(fmt = "received a masked frame from server")]
+    #[display("received a masked frame from server")]
    MaskedFrame,

    /// Encountered invalid opcode.
-    #[display(fmt = "invalid opcode ({})", _0)]
+    #[display("invalid opcode ({})", _0)]
    InvalidOpcode(#[error(not(source))] u8),

    /// Invalid control frame length
-    #[display(fmt = "invalid control frame length ({})", _0)]
+    #[display("invalid control frame length ({})", _0)]
    InvalidLength(#[error(not(source))] usize),

    /// Bad opcode.
-    #[display(fmt = "bad opcode")]
+    #[display("bad opcode")]
    BadOpCode,

    /// A payload reached size limit.
-    #[display(fmt = "payload reached size limit")]
+    #[display("payload reached size limit")]
    Overflow,

    /// Continuation has not started.
-    #[display(fmt = "continuation has not started")]
+    #[display("continuation has not started")]
    ContinuationNotStarted,

    /// Received new continuation but it is already started.
-    #[display(fmt = "received new continuation but it has already started")]
+    #[display("received new continuation but it has already started")]
    ContinuationStarted,

    /// Unknown continuation fragment.
-    #[display(fmt = "unknown continuation fragment: {}", _0)]
+    #[display("unknown continuation fragment: {}", _0)]
    ContinuationFragment(#[error(not(source))] OpCode),

    /// I/O error.
-    #[display(fmt = "I/O error: {}", _0)]
+    #[display("I/O error: {}", _0)]
    Io(io::Error),
 }

@ -71,27 +71,27 @@ pub enum ProtocolError {
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Display, Error)]
 pub enum HandshakeError {
    /// Only get method is allowed.
-    #[display(fmt = "method not allowed")]
+    #[display("method not allowed")]
    GetMethodRequired,

    /// Upgrade header if not set to WebSocket.
-    #[display(fmt = "WebSocket upgrade is expected")]
+    #[display("WebSocket upgrade is expected")]
    NoWebsocketUpgrade,

    /// Connection header is not set to upgrade.
-    #[display(fmt = "connection upgrade is expected")]
+    #[display("connection upgrade is expected")]
    NoConnectionUpgrade,

    /// WebSocket version header is not set.
-    #[display(fmt = "WebSocket version header is required")]
+    #[display("WebSocket version header is required")]
    NoVersionHeader,

    /// Unsupported WebSocket version.
-    #[display(fmt = "unsupported WebSocket version")]
+    #[display("unsupported WebSocket version")]
    UnsupportedVersion,

    /// WebSocket key is not set or wrong.
-    #[display(fmt = "unknown WebSocket key")]
+    #[display("unknown WebSocket key")]
    BadWebsocketKey,
 }

--- a/actix-http/tests/test_client.rs
+++ b/actix-http/tests/test_client.rs
@ -5,7 +5,7 @@ use actix_http_test::test_server;
 use actix_service::ServiceFactoryExt;
 use actix_utils::future;
 use bytes::Bytes;
-use derive_more::{Display, Error};
+use derive_more::derive::{Display, Error};
 use futures_util::StreamExt as _;

 const STR: &str = "Hello World Hello World Hello World Hello World Hello World \
@ -94,7 +94,7 @@ async fn with_query_parameter() {
 }

 #[derive(Debug, Display, Error)]
-#[display(fmt = "expect failed")]
+#[display("expect failed")]
 struct ExpectFailed;

 impl From<ExpectFailed> for Response<BoxBody> {
--- a/actix-http/tests/test_openssl.rs
+++ b/actix-http/tests/test_openssl.rs
@ -14,7 +14,7 @@ use actix_http_test::test_server;
 use actix_service::{fn_service, ServiceFactoryExt};
 use actix_utils::future::{err, ok, ready};
 use bytes::{Bytes, BytesMut};
-use derive_more::{Display, Error};
+use derive_more::derive::{Display, Error};
 use futures_core::Stream;
 use futures_util::{stream::once, StreamExt as _};
 use openssl::{
@ -398,7 +398,7 @@ async fn h2_response_http_error_handling() {
 }

 #[derive(Debug, Display, Error)]
-#[display(fmt = "error")]
+#[display("error")]
 struct BadRequest;

 impl From<BadRequest> for Response<BoxBody> {
--- a/actix-http/tests/test_rustls.rs
+++ b/actix-http/tests/test_rustls.rs
@ -23,7 +23,7 @@ use actix_service::{fn_factory_with_config, fn_service};
 use actix_tls::connect::rustls_0_23::webpki_roots_cert_store;
 use actix_utils::future::{err, ok, poll_fn};
 use bytes::{Bytes, BytesMut};
-use derive_more::{Display, Error};
+use derive_more::derive::{Display, Error};
 use futures_core::{ready, Stream};
 use futures_util::stream::once;
 use rustls::{pki_types::ServerName, ServerConfig as RustlsServerConfig};
@ -480,7 +480,7 @@ async fn h2_response_http_error_handling() {
 }

 #[derive(Debug, Display, Error)]
-#[display(fmt = "error")]
+#[display("error")]
 struct BadRequest;

 impl From<BadRequest> for Response<BoxBody> {
--- a/actix-http/tests/test_server.rs
+++ b/actix-http/tests/test_server.rs
@ -14,7 +14,7 @@ use actix_rt::{net::TcpStream, time::sleep};
 use actix_service::fn_service;
 use actix_utils::future::{err, ok, ready};
 use bytes::Bytes;
-use derive_more::{Display, Error};
+use derive_more::derive::{Display, Error};
 use futures_util::{stream::once, FutureExt as _, StreamExt as _};
 use regex::Regex;

@ -62,7 +62,7 @@ async fn h1_2() {
 }

 #[derive(Debug, Display, Error)]
-#[display(fmt = "expect failed")]
+#[display("expect failed")]
 struct ExpectFailed;

 impl From<ExpectFailed> for Response<BoxBody> {
@ -723,7 +723,7 @@ async fn h1_response_http_error_handling() {
 }

 #[derive(Debug, Display, Error)]
-#[display(fmt = "error")]
+#[display("error")]
 struct BadRequest;

 impl From<BadRequest> for Response<BoxBody> {
--- a/actix-http/tests/test_ws.rs
+++ b/actix-http/tests/test_ws.rs
@ -14,7 +14,7 @@ use actix_http::{
 use actix_http_test::test_server;
 use actix_service::{fn_factory, Service};
 use bytes::Bytes;
-use derive_more::{Display, Error, From};
+use derive_more::derive::{Display, Error, From};
 use futures_core::future::LocalBoxFuture;
 use futures_util::{SinkExt as _, StreamExt as _};

@ -37,16 +37,16 @@ impl WsService {

 #[derive(Debug, Display, Error, From)]
 enum WsServiceError {
-    #[display(fmt = "HTTP error")]
+    #[display("HTTP error")]
    Http(actix_http::Error),

-    #[display(fmt = "WS handshake error")]
+    #[display("WS handshake error")]
    Ws(actix_http::ws::HandshakeError),

-    #[display(fmt = "I/O error")]
+    #[display("I/O error")]
    Io(std::io::Error),

-    #[display(fmt = "dispatcher error")]
+    #[display("dispatcher error")]
    Dispatcher,
 }

--- a/actix-multipart-derive/src/lib.rs
+++ b/actix-multipart-derive/src/lib.rs
@ -5,6 +5,7 @@
 #![doc(html_logo_url = "https://actix.rs/img/logo.png")]
 #![doc(html_favicon_url = "https://actix.rs/favicon.ico")]
 #![cfg_attr(docsrs, feature(doc_auto_cfg))]
+#![allow(clippy::disallowed_names)] // false positives in some macro expansions

 use std::collections::HashSet;

@ -35,6 +36,7 @@ struct MultipartFormAttrs {
    duplicate_field: DuplicateField,
 }

+#[allow(clippy::disallowed_names)] // false positive in macro expansion
 #[derive(FromField, Default)]
 #[darling(attributes(multipart), default)]
 struct FieldAttrs {
--- a/actix-multipart/CHANGES.md
+++ b/actix-multipart/CHANGES.md
@ -2,6 +2,8 @@

 ## Unreleased

+- Minimum supported Rust version (MSRV) is now 1.75.
+
 ## 0.7.2

 - Fix re-exported version of `actix-multipart-derive`.
--- a/actix-multipart/Cargo.toml
+++ b/actix-multipart/Cargo.toml
@ -42,7 +42,7 @@ actix-multipart-derive = { version = "=0.7.0", optional = true }
 actix-utils = "3"
 actix-web = { version = "4", default-features = false }

-derive_more = "0.99.5"
+derive_more = { version = "1", features = ["display", "error", "from"] }
 futures-core = { version = "0.3.17", default-features = false, features = ["alloc"] }
 futures-util = { version = "0.3.17", default-features = false, features = ["alloc"] }
 httparse = "1.3"
--- a/actix-multipart/src/error.rs
+++ b/actix-multipart/src/error.rs
@ -5,18 +5,18 @@ use actix_web::{
    http::StatusCode,
    ResponseError,
 };
-use derive_more::{Display, Error, From};
+use derive_more::derive::{Display, Error, From};

 /// A set of errors that can occur during parsing multipart streams.
 #[derive(Debug, Display, From, Error)]
 #[non_exhaustive]
 pub enum Error {
    /// Could not find Content-Type header.
-    #[display(fmt = "Could not find Content-Type header")]
+    #[display("Could not find Content-Type header")]
    ContentTypeMissing,

    /// Could not parse Content-Type header.
-    #[display(fmt = "Could not parse Content-Type header")]
+    #[display("Could not parse Content-Type header")]
    ContentTypeParse,

    /// Parsed Content-Type did not have "multipart" top-level media type.
@ -25,11 +25,11 @@ pub enum Error {
    /// "multipart/form-data" media type.
    ///
    /// [`MultipartForm`]: struct@crate::form::MultipartForm
-    #[display(fmt = "Parsed Content-Type did not have "multipart" top-level media type")]
+    #[display("Parsed Content-Type did not have 'multipart' top-level media type")]
    ContentTypeIncompatible,

    /// Multipart boundary is not found.
-    #[display(fmt = "Multipart boundary is not found")]
+    #[display("Multipart boundary is not found")]
    BoundaryMissing,

    /// Content-Disposition header was not found or not of disposition type "form-data" when parsing
@ -39,7 +39,7 @@ pub enum Error {
    /// always be present and have a disposition type of "form-data".
    ///
    /// [RFC 7578 §4.2]: https://datatracker.ietf.org/doc/html/rfc7578#section-4.2
-    #[display(fmt = "Content-Disposition header was not found when parsing a \"form-data\" field")]
+    #[display("Content-Disposition header was not found when parsing a \"form-data\" field")]
    ContentDispositionMissing,

    /// Content-Disposition name parameter was not found when parsing a "form-data" field.
@ -48,48 +48,48 @@ pub enum Error {
    /// always include a "name" parameter.
    ///
    /// [RFC 7578 §4.2]: https://datatracker.ietf.org/doc/html/rfc7578#section-4.2
-    #[display(fmt = "Content-Disposition header was not found when parsing a \"form-data\" field")]
+    #[display("Content-Disposition header was not found when parsing a \"form-data\" field")]
    ContentDispositionNameMissing,

    /// Nested multipart is not supported.
-    #[display(fmt = "Nested multipart is not supported")]
+    #[display("Nested multipart is not supported")]
    Nested,

    /// Multipart stream is incomplete.
-    #[display(fmt = "Multipart stream is incomplete")]
+    #[display("Multipart stream is incomplete")]
    Incomplete,

    /// Field parsing failed.
-    #[display(fmt = "Error during field parsing")]
+    #[display("Error during field parsing")]
    Parse(ParseError),

    /// HTTP payload error.
-    #[display(fmt = "Payload error")]
+    #[display("Payload error")]
    Payload(PayloadError),

    /// Stream is not consumed.
-    #[display(fmt = "Stream is not consumed")]
+    #[display("Stream is not consumed")]
    NotConsumed,

    /// Form field handler raised error.
-    #[display(fmt = "An error occurred processing field: {name}")]
+    #[display("An error occurred processing field: {name}")]
    Field {
        name: String,
        source: actix_web::Error,
    },

    /// Duplicate field found (for structure that opted-in to denying duplicate fields).
-    #[display(fmt = "Duplicate field found: {_0}")]
+    #[display("Duplicate field found: {_0}")]
    #[from(ignore)]
    DuplicateField(#[error(not(source))] String),

    /// Required field is missing.
-    #[display(fmt = "Required field is missing: {_0}")]
+    #[display("Required field is missing: {_0}")]
    #[from(ignore)]
    MissingField(#[error(not(source))] String),

    /// Unknown field (for structure that opted-in to denying unknown fields).
-    #[display(fmt = "Unknown field: {_0}")]
+    #[display("Unknown field: {_0}")]
    #[from(ignore)]
    UnknownField(#[error(not(source))] String),
 }
--- a/actix-multipart/src/field.rs
+++ b/actix-multipart/src/field.rs
@ -13,7 +13,7 @@ use actix_web::{
    http::header::{self, ContentDisposition, HeaderMap},
    web::{Bytes, BytesMut},
 };
-use derive_more::{Display, Error};
+use derive_more::derive::{Display, Error};
 use futures_core::Stream;
 use mime::Mime;

@ -25,7 +25,7 @@ use crate::{

 /// Error type returned from [`Field::bytes()`] when field data is larger than limit.
 #[derive(Debug, Display, Error)]
-#[display(fmt = "size limit exceeded while collecting field data")]
+#[display("size limit exceeded while collecting field data")]
 #[non_exhaustive]
 pub struct LimitExceeded;

--- a/actix-multipart/src/form/json.rs
+++ b/actix-multipart/src/form/json.rs
@ -3,7 +3,7 @@
 use std::sync::Arc;

 use actix_web::{http::StatusCode, web, Error, HttpRequest, ResponseError};
-use derive_more::{Deref, DerefMut, Display, Error};
+use derive_more::derive::{Deref, DerefMut, Display, Error};
 use futures_core::future::LocalBoxFuture;
 use serde::de::DeserializeOwned;

@ -66,11 +66,11 @@ where
 #[non_exhaustive]
 pub enum JsonFieldError {
    /// Deserialize error.
-    #[display(fmt = "Json deserialize error: {}", _0)]
+    #[display("Json deserialize error: {}", _0)]
    Deserialize(serde_json::Error),

    /// Content type error.
-    #[display(fmt = "Content type error")]
+    #[display("Content type error")]
    ContentType,
 }

--- a/actix-multipart/src/form/mod.rs
+++ b/actix-multipart/src/form/mod.rs
@ -8,7 +8,7 @@ use std::{
 };

 use actix_web::{dev, error::PayloadError, web, Error, FromRequest, HttpRequest};
-use derive_more::{Deref, DerefMut};
+use derive_more::derive::{Deref, DerefMut};
 use futures_core::future::LocalBoxFuture;
 use futures_util::{TryFutureExt as _, TryStreamExt as _};

--- a/actix-multipart/src/form/tempfile.rs
+++ b/actix-multipart/src/form/tempfile.rs
@ -7,7 +7,7 @@ use std::{
 };

 use actix_web::{http::StatusCode, web, Error, HttpRequest, ResponseError};
-use derive_more::{Display, Error};
+use derive_more::derive::{Display, Error};
 use futures_core::future::LocalBoxFuture;
 use futures_util::TryStreamExt as _;
 use mime::Mime;
@ -82,7 +82,7 @@ impl<'t> FieldReader<'t> for TempFile {
 #[non_exhaustive]
 pub enum TempFileError {
    /// File I/O Error
-    #[display(fmt = "File I/O error: {}", _0)]
+    #[display("File I/O error: {}", _0)]
    FileIo(std::io::Error),
 }

--- a/actix-multipart/src/form/text.rs
+++ b/actix-multipart/src/form/text.rs
@ -3,7 +3,7 @@
 use std::{str, sync::Arc};

 use actix_web::{http::StatusCode, web, Error, HttpRequest, ResponseError};
-use derive_more::{Deref, DerefMut, Display, Error};
+use derive_more::derive::{Deref, DerefMut, Display, Error};
 use futures_core::future::LocalBoxFuture;
 use serde::de::DeserializeOwned;

@ -77,15 +77,15 @@ where
 #[non_exhaustive]
 pub enum TextError {
    /// UTF-8 decoding error.
-    #[display(fmt = "UTF-8 decoding error: {}", _0)]
+    #[display("UTF-8 decoding error: {}", _0)]
    Utf8Error(str::Utf8Error),

    /// Deserialize error.
-    #[display(fmt = "Plain text deserialize error: {}", _0)]
+    #[display("Plain text deserialize error: {}", _0)]
    Deserialize(serde_plain::Error),

    /// Content type error.
-    #[display(fmt = "Content type error")]
+    #[display("Content type error")]
    ContentType,
 }

--- a/actix-router/src/de.rs
+++ b/actix-router/src/de.rs
@ -511,11 +511,6 @@ mod tests {
        value: String,
    }

-    #[derive(Deserialize)]
-    struct Id {
-        _id: String,
-    }
-
    #[derive(Debug, Deserialize)]
    struct Test1(String, u32);

--- a/actix-router/src/path.rs
+++ b/actix-router/src/path.rs
@ -143,9 +143,9 @@ impl<T: ResourcePath> Path<T> {
        for (seg_name, val) in self.segments.iter() {
            if name == seg_name {
                return match val {
-                    PathItem::Static(ref s) => Some(s),
-                    PathItem::Segment(s, e) => {
-                        Some(&self.path.path()[(*s as usize)..(*e as usize)])
+                    PathItem::Static(ref seg) => Some(seg),
+                    PathItem::Segment(start, end) => {
+                        Some(&self.path.path()[(*start as usize)..(*end as usize)])
                    }
                };
            }
@ -193,8 +193,10 @@ impl<'a, T: ResourcePath> Iterator for PathIter<'a, T> {
        if self.idx < self.params.segment_count() {
            let idx = self.idx;
            let res = match self.params.segments[idx].1 {
-                PathItem::Static(ref s) => s,
-                PathItem::Segment(s, e) => &self.params.path.path()[(s as usize)..(e as usize)],
+                PathItem::Static(ref seg) => seg,
+                PathItem::Segment(start, end) => {
+                    &self.params.path.path()[(start as usize)..(end as usize)]
+                }
            };
            self.idx += 1;
            return Some((&self.params.segments[idx].0, res));
@ -217,8 +219,8 @@ impl<T: ResourcePath> Index<usize> for Path<T> {

    fn index(&self, idx: usize) -> &str {
        match self.segments[idx].1 {
-            PathItem::Static(ref s) => s,
-            PathItem::Segment(s, e) => &self.path.path()[(s as usize)..(e as usize)],
+            PathItem::Static(ref seg) => seg,
+            PathItem::Segment(start, end) => &self.path.path()[(start as usize)..(end as usize)],
        }
    }
 }
--- a/actix-web-actors/CHANGES.md
+++ b/actix-web-actors/CHANGES.md
@ -2,7 +2,10 @@

 ## Unreleased

- Take the encoded buffer when yielding bytes in the response stream rather than splitting the buffer, reducing memory use
+## 4.3.1 <!-- v4.3.1+deprecated -->
+
+- Reduce memory usage by `take`-ing (rather than `split`-ing) the encoded buffer when yielding bytes in the response stream.
+- Mark crate as deprecated.
 - Minimum supported Rust version (MSRV) is now 1.72.

 ## 4.3.0
--- a/actix-web-actors/Cargo.toml
+++ b/actix-web-actors/Cargo.toml
@ -1,13 +1,14 @@
 [package]
 name = "actix-web-actors"
-version = "4.3.0"
+version = "4.3.1+deprecated"
 authors = ["Nikolay Kim <fafhrd91@gmail.com>"]
 description = "Actix actors support for Actix Web"
 keywords = ["actix", "http", "web", "framework", "async"]
-homepage = "https://actix.rs"
-repository = "https://github.com/actix/actix-web"
-license = "MIT OR Apache-2.0"
-edition = "2021"
+homepage.workspace = true
+repository.workspace = true
+license.workspace = true
+edition.workspace = true
+rust-version.workspace = true

 [package.metadata.cargo_check_external_types]
 allowed_external_types = [
--- a/actix-web-actors/README.md
+++ b/actix-web-actors/README.md
@ -1,15 +1,17 @@
 # `actix-web-actors`

 > Actix actors support for Actix Web.
+>
+> This crate is deprecated. Migrate to [`actix-ws`](https://crates.io/crates/actix-ws).

 <!-- prettier-ignore-start -->

 [![crates.io](https://img.shields.io/crates/v/actix-web-actors?label=latest)](https://crates.io/crates/actix-web-actors)
-[![Documentation](https://docs.rs/actix-web-actors/badge.svg?version=4.3.0)](https://docs.rs/actix-web-actors/4.3.0)
+[![Documentation](https://docs.rs/actix-web-actors/badge.svg?version=4.3.1)](https://docs.rs/actix-web-actors/4.3.1)
 ![Version](https://img.shields.io/badge/rustc-1.72+-ab6000.svg)
 ![License](https://img.shields.io/crates/l/actix-web-actors.svg)
 <br />
-[![dependency status](https://deps.rs/crate/actix-web-actors/4.3.0/status.svg)](https://deps.rs/crate/actix-web-actors/4.3.0)
+![maintenance-status](https://img.shields.io/badge/maintenance-deprecated-red.svg)
 [![Download](https://img.shields.io/crates/d/actix-web-actors.svg)](https://crates.io/crates/actix-web-actors)
 [![Chat on Discord](https://img.shields.io/discord/771444961383153695?label=chat&logo=discord)](https://discord.gg/NWpN5mmg3x)

--- a/actix-web-actors/src/lib.rs
+++ b/actix-web-actors/src/lib.rs
@ -1,5 +1,7 @@
 //! Actix actors support for Actix Web.
 //!
+//! This crate is deprecated. Migrate to [`actix-ws`](https://crates.io/crates/actix-ws).
+//!
 //! # Examples
 //!
 //! ```no_run
--- a/actix-web-actors/src/ws.rs
+++ b/actix-web-actors/src/ws.rs
@ -796,11 +796,8 @@ where
            Some(frm) => {
                let msg = match frm {
                    Frame::Text(data) => {
-                        Message::Text(ByteString::try_from(data).map_err(|e| {
-                            ProtocolError::Io(io::Error::new(
-                                io::ErrorKind::Other,
-                                format!("{}", e),
-                            ))
+                        Message::Text(ByteString::try_from(data).map_err(|err| {
+                            ProtocolError::Io(io::Error::new(io::ErrorKind::Other, err))
                        })?)
                    }
                    Frame::Binary(data) => Message::Binary(data),
--- a/actix-web/CHANGES.md
+++ b/actix-web/CHANGES.md
@ -2,6 +2,15 @@

 ## Unreleased

+- Minimum supported Rust version (MSRV) is now 1.75.
+
+## 4.9.0
+
+### Added
+
+- Add `middleware::from_fn()` helper.
+- Add `web::ThinData` extractor.
+
 ## 4.8.0

 ### Added
--- a/actix-web/Cargo.toml
+++ b/actix-web/Cargo.toml
@ -1,6 +1,6 @@
 [package]
 name = "actix-web"
-version = "4.8.0"
+version = "4.9.0"
 description = "Actix Web is a powerful, pragmatic, and extremely fast web framework for Rust"
 authors = [
    "Nikolay Kim <fafhrd91@gmail.com>",
@ -150,11 +150,12 @@ bytes = "1"
 bytestring = "1"
 cfg-if = "1"
 cookie = { version = "0.16", features = ["percent-encode"], optional = true }
-derive_more = "0.99.8"
+derive_more = { version = "1", features = ["display", "error", "from"] }
 encoding_rs = "0.8"
 futures-core = { version = "0.3.17", default-features = false }
 futures-util = { version = "0.3.17", default-features = false }
 itoa = "1"
+impl-more = "0.1.4"
 language-tags = "0.3"
 log = "0.4"
 mime = "0.3"
@ -186,7 +187,7 @@ futures-util = { version = "0.3.17", default-features = false, features = ["std"
 rand = "0.8"
 rcgen = "0.13"
 rustls-pemfile = "2"
-serde = { version = "1.0", features = ["derive"] }
+serde = { version = "1", features = ["derive"] }
 static_assertions = "1"
 tls-openssl = { package = "openssl", version = "0.10.55" }
 tls-rustls = { package = "rustls", version = "0.23" }
--- a/actix-web/README.md
+++ b/actix-web/README.md
@ -8,10 +8,10 @@
 <!-- prettier-ignore-start -->

 [![crates.io](https://img.shields.io/crates/v/actix-web?label=latest)](https://crates.io/crates/actix-web)
-[![Documentation](https://docs.rs/actix-web/badge.svg?version=4.8.0)](https://docs.rs/actix-web/4.8.0)
+[![Documentation](https://docs.rs/actix-web/badge.svg?version=4.9.0)](https://docs.rs/actix-web/4.9.0)
 ![MSRV](https://img.shields.io/badge/rustc-1.72+-ab6000.svg)
 ![MIT or Apache 2.0 licensed](https://img.shields.io/crates/l/actix-web.svg)
-[![Dependency Status](https://deps.rs/crate/actix-web/4.8.0/status.svg)](https://deps.rs/crate/actix-web/4.8.0)
+[![Dependency Status](https://deps.rs/crate/actix-web/4.9.0/status.svg)](https://deps.rs/crate/actix-web/4.9.0)
 <br />
 [![CI](https://github.com/actix/actix-web/actions/workflows/ci.yml/badge.svg)](https://github.com/actix/actix-web/actions/workflows/ci.yml)
 [![codecov](https://codecov.io/gh/actix/actix-web/branch/master/graph/badge.svg)](https://codecov.io/gh/actix/actix-web)
--- a/actix-web/benches/responder.rs
+++ b/actix-web/benches/responder.rs
@ -2,11 +2,9 @@ use std::{future::Future, time::Instant};

 use actix_http::body::BoxBody;
 use actix_utils::future::{ready, Ready};
-use actix_web::{
-    error, http::StatusCode, test::TestRequest, Error, HttpRequest, HttpResponse, Responder,
-};
+use actix_web::{http::StatusCode, test::TestRequest, Error, HttpRequest, HttpResponse, Responder};
 use criterion::{criterion_group, criterion_main, Criterion};
-use futures_util::future::{join_all, Either};
+use futures_util::future::join_all;

 // responder simulate the old responder trait.
 trait FutureResponder {
@ -16,9 +14,6 @@ trait FutureResponder {
    fn future_respond_to(self, req: &HttpRequest) -> Self::Future;
 }

-// a simple option responder type.
-struct OptionResponder<T>(Option<T>);
-
 // a simple wrapper type around string
 struct StringResponder(String);

@ -34,22 +29,6 @@ impl FutureResponder for StringResponder {
    }
 }

-impl<T> FutureResponder for OptionResponder<T>
-where
-    T: FutureResponder,
-    T::Future: Future<Output = Result<HttpResponse, Error>>,
-{
-    type Error = Error;
-    type Future = Either<T::Future, Ready<Result<HttpResponse, Self::Error>>>;
-
-    fn future_respond_to(self, req: &HttpRequest) -> Self::Future {
-        match self.0 {
-            Some(t) => Either::Left(t.future_respond_to(req)),
-            None => Either::Right(ready(Err(error::ErrorInternalServerError("err")))),
-        }
-    }
-}
-
 impl Responder for StringResponder {
    type Body = BoxBody;

@ -60,17 +39,6 @@ impl Responder for StringResponder {
    }
 }

-impl<T: Responder> Responder for OptionResponder<T> {
-    type Body = BoxBody;
-
-    fn respond_to(self, req: &HttpRequest) -> HttpResponse<Self::Body> {
-        match self.0 {
-            Some(t) => t.respond_to(req).map_into_boxed_body(),
-            None => HttpResponse::from_error(error::ErrorInternalServerError("err")),
-        }
-    }
-}
-
 fn future_responder(c: &mut Criterion) {
    let rt = actix_rt::System::new();
    let req = TestRequest::default().to_http_request();
--- a/actix-web/examples/middleware_from_fn.rs
+++ b/actix-web/examples/middleware_from_fn.rs
@ -0,0 +1,127 @@
+//! Shows a couple of ways to use the `from_fn` middleware.
+
+use std::{collections::HashMap, io, rc::Rc, time::Duration};
+
+use actix_web::{
+    body::MessageBody,
+    dev::{Service, ServiceRequest, ServiceResponse, Transform},
+    http::header::{self, HeaderValue, Range},
+    middleware::{from_fn, Logger, Next},
+    web::{self, Header, Query},
+    App, Error, HttpResponse, HttpServer,
+};
+
+async fn noop<B>(req: ServiceRequest, next: Next<B>) -> Result<ServiceResponse<B>, Error> {
+    next.call(req).await
+}
+
+async fn print_range_header<B>(
+    range_header: Option<Header<Range>>,
+    req: ServiceRequest,
+    next: Next<B>,
+) -> Result<ServiceResponse<B>, Error> {
+    if let Some(Header(range)) = range_header {
+        println!("Range: {range}");
+    } else {
+        println!("No Range header");
+    }
+
+    next.call(req).await
+}
+
+async fn mutate_body_type(
+    req: ServiceRequest,
+    next: Next<impl MessageBody + 'static>,
+) -> Result<ServiceResponse<impl MessageBody>, Error> {
+    let res = next.call(req).await?;
+    Ok(res.map_into_left_body::<()>())
+}
+
+async fn mutate_body_type_with_extractors(
+    string_body: String,
+    query: Query<HashMap<String, String>>,
+    req: ServiceRequest,
+    next: Next<impl MessageBody + 'static>,
+) -> Result<ServiceResponse<impl MessageBody>, Error> {
+    println!("body is: {string_body}");
+    println!("query string: {query:?}");
+
+    let res = next.call(req).await?;
+
+    Ok(res.map_body(move |_, _| string_body))
+}
+
+async fn timeout_10secs(
+    req: ServiceRequest,
+    next: Next<impl MessageBody + 'static>,
+) -> Result<ServiceResponse<impl MessageBody>, Error> {
+    match tokio::time::timeout(Duration::from_secs(10), next.call(req)).await {
+        Ok(res) => res,
+        Err(_err) => Err(actix_web::error::ErrorRequestTimeout("")),
+    }
+}
+
+struct MyMw(bool);
+
+impl MyMw {
+    async fn mw_cb(
+        &self,
+        req: ServiceRequest,
+        next: Next<impl MessageBody + 'static>,
+    ) -> Result<ServiceResponse<impl MessageBody>, Error> {
+        let mut res = match self.0 {
+            true => req.into_response("short-circuited").map_into_right_body(),
+            false => next.call(req).await?.map_into_left_body(),
+        };
+
+        res.headers_mut()
+            .insert(header::WARNING, HeaderValue::from_static("42"));
+
+        Ok(res)
+    }
+
+    pub fn into_middleware<S, B>(
+        self,
+    ) -> impl Transform<
+        S,
+        ServiceRequest,
+        Response = ServiceResponse<impl MessageBody>,
+        Error = Error,
+        InitError = (),
+    >
+    where
+        S: Service<ServiceRequest, Response = ServiceResponse<B>, Error = Error> + 'static,
+        B: MessageBody + 'static,
+    {
+        let this = Rc::new(self);
+        from_fn(move |req, next| {
+            let this = Rc::clone(&this);
+            async move { Self::mw_cb(&this, req, next).await }
+        })
+    }
+}
+
+#[actix_web::main]
+async fn main() -> io::Result<()> {
+    env_logger::init_from_env(env_logger::Env::new().default_filter_or("info"));
+
+    let bind = ("127.0.0.1", 8080);
+    log::info!("staring server at http://{}:{}", &bind.0, &bind.1);
+
+    HttpServer::new(|| {
+        App::new()
+            .wrap(from_fn(noop))
+            .wrap(from_fn(print_range_header))
+            .wrap(from_fn(mutate_body_type))
+            .wrap(from_fn(mutate_body_type_with_extractors))
+            .wrap(from_fn(timeout_10secs))
+            // switch bool to true to observe early response
+            .wrap(MyMw(false).into_middleware())
+            .wrap(Logger::default())
+            .default_service(web::to(HttpResponse::Ok))
+    })
+    .workers(1)
+    .bind(bind)?
+    .run()
+    .await
+}
--- a/actix-web/src/app.rs
+++ b/actix-web/src/app.rs
@ -269,9 +269,9 @@ where
            + 'static,
        U::InitError: fmt::Debug,
    {
-        let svc = svc
-            .into_factory()
-            .map_init_err(|e| log::error!("Can not construct default service: {:?}", e));
+        let svc = svc.into_factory().map_init_err(|err| {
+            log::error!("Can not construct default service: {err:?}");
+        });

        self.default = Some(Rc::new(boxed::factory(svc)));

--- a/actix-web/src/error/mod.rs
+++ b/actix-web/src/error/mod.rs
@ -6,7 +6,7 @@
 //
 // See <https://github.com/rust-lang/rust/issues/83375>
 pub use actix_http::error::{ContentTypeError, DispatchError, HttpError, ParseError, PayloadError};
-use derive_more::{Display, Error, From};
+use derive_more::derive::{Display, Error, From};
 use serde_json::error::Error as JsonError;
 use serde_urlencoded::{de::Error as FormDeError, ser::Error as FormError};
 use url::ParseError as UrlParseError;
@ -29,7 +29,7 @@ pub type Result<T, E = Error> = std::result::Result<T, E>;

 /// An error representing a problem running a blocking task on a thread pool.
 #[derive(Debug, Display, Error)]
-#[display(fmt = "Blocking thread pool is shut down unexpectedly")]
+#[display("Blocking thread pool is shut down unexpectedly")]
 #[non_exhaustive]
 pub struct BlockingError;

@ -40,15 +40,15 @@ impl ResponseError for crate::error::BlockingError {}
 #[non_exhaustive]
 pub enum UrlGenerationError {
    /// Resource not found.
-    #[display(fmt = "Resource not found")]
+    #[display("Resource not found")]
    ResourceNotFound,

    /// Not all URL parameters covered.
-    #[display(fmt = "Not all URL parameters covered")]
+    #[display("Not all URL parameters covered")]
    NotEnoughElements,

    /// URL parse error.
-    #[display(fmt = "{}", _0)]
+    #[display("{}", _0)]
    ParseError(UrlParseError),
 }

@ -59,39 +59,39 @@ impl ResponseError for UrlGenerationError {}
 #[non_exhaustive]
 pub enum UrlencodedError {
    /// Can not decode chunked transfer encoding.
-    #[display(fmt = "Can not decode chunked transfer encoding.")]
+    #[display("Can not decode chunked transfer encoding.")]
    Chunked,

    /// Payload size is larger than allowed. (default limit: 256kB).
    #[display(
-        fmt = "URL encoded payload is larger ({} bytes) than allowed (limit: {} bytes).",
+        "URL encoded payload is larger ({} bytes) than allowed (limit: {} bytes).",
        size,
        limit
    )]
    Overflow { size: usize, limit: usize },

    /// Payload size is now known.
-    #[display(fmt = "Payload size is now known.")]
+    #[display("Payload size is now known.")]
    UnknownLength,

    /// Content type error.
-    #[display(fmt = "Content type error.")]
+    #[display("Content type error.")]
    ContentType,

    /// Parse error.
-    #[display(fmt = "Parse error: {}.", _0)]
+    #[display("Parse error: {}.", _0)]
    Parse(FormDeError),

    /// Encoding error.
-    #[display(fmt = "Encoding error.")]
+    #[display("Encoding error.")]
    Encoding,

    /// Serialize error.
-    #[display(fmt = "Serialize error: {}.", _0)]
+    #[display("Serialize error: {}.", _0)]
    Serialize(FormError),

    /// Payload error.
-    #[display(fmt = "Error that occur during reading payload: {}.", _0)]
+    #[display("Error that occur during reading payload: {}.", _0)]
    Payload(PayloadError),
 }

@ -113,30 +113,30 @@ impl ResponseError for UrlencodedError {
 pub enum JsonPayloadError {
    /// Payload size is bigger than allowed & content length header set. (default: 2MB)
    #[display(
-        fmt = "JSON payload ({} bytes) is larger than allowed (limit: {} bytes).",
+        "JSON payload ({} bytes) is larger than allowed (limit: {} bytes).",
        length,
        limit
    )]
    OverflowKnownLength { length: usize, limit: usize },

    /// Payload size is bigger than allowed but no content length header set. (default: 2MB)
-    #[display(fmt = "JSON payload has exceeded limit ({} bytes).", limit)]
+    #[display("JSON payload has exceeded limit ({} bytes).", limit)]
    Overflow { limit: usize },

    /// Content type error
-    #[display(fmt = "Content type error")]
+    #[display("Content type error")]
    ContentType,

    /// Deserialize error
-    #[display(fmt = "Json deserialize error: {}", _0)]
+    #[display("Json deserialize error: {}", _0)]
    Deserialize(JsonError),

    /// Serialize error
-    #[display(fmt = "Json serialize error: {}", _0)]
+    #[display("Json serialize error: {}", _0)]
    Serialize(JsonError),

    /// Payload error
-    #[display(fmt = "Error that occur during reading payload: {}", _0)]
+    #[display("Error that occur during reading payload: {}", _0)]
    Payload(PayloadError),
 }

@ -166,7 +166,7 @@ impl ResponseError for JsonPayloadError {
 #[non_exhaustive]
 pub enum PathError {
    /// Deserialize error
-    #[display(fmt = "Path deserialize error: {}", _0)]
+    #[display("Path deserialize error: {}", _0)]
    Deserialize(serde::de::value::Error),
 }

@ -182,7 +182,7 @@ impl ResponseError for PathError {
 #[non_exhaustive]
 pub enum QueryPayloadError {
    /// Query deserialize error.
-    #[display(fmt = "Query deserialize error: {}", _0)]
+    #[display("Query deserialize error: {}", _0)]
    Deserialize(serde::de::value::Error),
 }

@ -196,20 +196,20 @@ impl ResponseError for QueryPayloadError {
 #[derive(Debug, Display, Error, From)]
 #[non_exhaustive]
 pub enum ReadlinesError {
-    #[display(fmt = "Encoding error")]
+    #[display("Encoding error")]
    /// Payload size is bigger than allowed. (default: 256kB)
    EncodingError,

    /// Payload error.
-    #[display(fmt = "Error that occur during reading payload: {}", _0)]
+    #[display("Error that occur during reading payload: {}", _0)]
    Payload(PayloadError),

    /// Line limit exceeded.
-    #[display(fmt = "Line limit exceeded")]
+    #[display("Line limit exceeded")]
    LimitOverflow,

    /// ContentType error.
-    #[display(fmt = "Content-type error")]
+    #[display("Content-type error")]
    ContentTypeError(ContentTypeError),
 }

--- a/actix-web/src/handler.rs
+++ b/actix-web/src/handler.rs
@ -19,7 +19,7 @@ use crate::{
 /// 1. It is an async function (or a function/closure that returns an appropriate future);
 /// 1. The function parameters (up to 12) implement [`FromRequest`];
 /// 1. The async function (or future) resolves to a type that can be converted into an
-///   [`HttpResponse`] (i.e., it implements the [`Responder`] trait).
+///    [`HttpResponse`] (i.e., it implements the [`Responder`] trait).
 ///
 ///
 /// # Compiler Errors
--- a/actix-web/src/http/header/content_disposition.rs
+++ b/actix-web/src/http/header/content_disposition.rs
@ -493,7 +493,7 @@ impl Header for ContentDisposition {
    }

    fn parse<T: crate::HttpMessage>(msg: &T) -> Result<Self, crate::error::ParseError> {
-        if let Some(h) = msg.headers().get(&Self::name()) {
+        if let Some(h) = msg.headers().get(Self::name()) {
            Self::from_raw(h)
        } else {
            Err(crate::error::ParseError::Header)
--- a/actix-web/src/http/header/content_length.rs
+++ b/actix-web/src/http/header/content_length.rs
@ -1,6 +1,6 @@
 use std::{convert::Infallible, str};

-use derive_more::{Deref, DerefMut};
+use derive_more::derive::{Deref, DerefMut};

 use crate::{
    error::ParseError,
--- a/actix-web/src/http/header/range.rs
+++ b/actix-web/src/http/header/range.rs
@ -107,16 +107,16 @@ impl ByteRangeSpec {
    /// satisfiable if they meet the following conditions:
    ///
    /// > If a valid byte-range-set includes at least one byte-range-spec with a first-byte-pos that
-    /// is less than the current length of the representation, or at least one
-    /// suffix-byte-range-spec with a non-zero suffix-length, then the byte-range-set
-    /// is satisfiable. Otherwise, the byte-range-set is unsatisfiable.
+    /// > is less than the current length of the representation, or at least one
+    /// > suffix-byte-range-spec with a non-zero suffix-length, then the byte-range-set is
+    /// > satisfiable. Otherwise, the byte-range-set is unsatisfiable.
    ///
    /// The function also computes remainder ranges based on the RFC:
    ///
    /// > If the last-byte-pos value is absent, or if the value is greater than or equal to the
-    /// current length of the representation data, the byte range is interpreted as the remainder
-    /// of the representation (i.e., the server replaces the value of last-byte-pos with a value
-    /// that is one less than the current length of the selected representation).
+    /// > current length of the representation data, the byte range is interpreted as the remainder
+    /// > of the representation (i.e., the server replaces the value of last-byte-pos with a value
+    /// > that is one less than the current length of the selected representation).
    ///
    /// [RFC 7233 §2.1]: https://datatracker.ietf.org/doc/html/rfc7233
    pub fn to_satisfiable_range(&self, full_length: u64) -> Option<(u64, u64)> {
@ -270,7 +270,7 @@ impl Header for Range {

    #[inline]
    fn parse<T: HttpMessage>(msg: &T) -> Result<Self, ParseError> {
-        header::from_one_raw_str(msg.headers().get(&Self::name()))
+        header::from_one_raw_str(msg.headers().get(Self::name()))
    }
 }

--- a/actix-web/src/info.rs
+++ b/actix-web/src/info.rs
@ -1,7 +1,7 @@
 use std::{convert::Infallible, net::SocketAddr};

 use actix_utils::future::{err, ok, Ready};
-use derive_more::{Display, Error};
+use derive_more::derive::{Display, Error};

 use crate::{
    dev::{AppConfig, Payload, RequestHead},
@ -235,7 +235,7 @@ impl FromRequest for ConnectionInfo {
 /// # let _svc = actix_web::web::to(handler);
 /// ```
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, PartialOrd, Ord, Display)]
-#[display(fmt = "{}", _0)]
+#[display("{}", _0)]
 pub struct PeerAddr(pub SocketAddr);

 impl PeerAddr {
@ -247,7 +247,7 @@ impl PeerAddr {

 #[derive(Debug, Display, Error)]
 #[non_exhaustive]
-#[display(fmt = "Missing peer address")]
+#[display("Missing peer address")]
 pub struct MissingPeerAddr;

 impl ResponseError for MissingPeerAddr {}
--- a/actix-web/src/lib.rs
+++ b/actix-web/src/lib.rs
@ -104,6 +104,7 @@ mod scope;
 mod server;
 mod service;
 pub mod test;
+mod thin_data;
 pub(crate) mod types;
 pub mod web;

--- a/actix-web/src/middleware/from_fn.rs
+++ b/actix-web/src/middleware/from_fn.rs
@ -0,0 +1,349 @@
+use std::{future::Future, marker::PhantomData, rc::Rc};
+
+use actix_service::boxed::{self, BoxFuture, RcService};
+use actix_utils::future::{ready, Ready};
+use futures_core::future::LocalBoxFuture;
+
+use crate::{
+    body::MessageBody,
+    dev::{forward_ready, Service, ServiceRequest, ServiceResponse, Transform},
+    Error, FromRequest,
+};
+
+/// Wraps an async function to be used as a middleware.
+///
+/// # Examples
+///
+/// The wrapped function should have the following form:
+///
+/// ```
+/// # use actix_web::{
+/// #     App, Error,
+/// #     body::MessageBody,
+/// #     dev::{ServiceRequest, ServiceResponse, Service as _},
+/// # };
+/// use actix_web::middleware::{self, Next};
+///
+/// async fn my_mw(
+///     req: ServiceRequest,
+///     next: Next<impl MessageBody>,
+/// ) -> Result<ServiceResponse<impl MessageBody>, Error> {
+///     // pre-processing
+///     next.call(req).await
+///     // post-processing
+/// }
+/// # App::new().wrap(middleware::from_fn(my_mw));
+/// ```
+///
+/// Then use in an app builder like this:
+///
+/// ```
+/// use actix_web::{
+///     App, Error,
+///     dev::{ServiceRequest, ServiceResponse, Service as _},
+/// };
+/// use actix_web::middleware::from_fn;
+/// # use actix_web::middleware::Next;
+/// # async fn my_mw<B>(req: ServiceRequest, next: Next<B>) -> Result<ServiceResponse<B>, Error> {
+/// #     next.call(req).await
+/// # }
+///
+/// App::new()
+///     .wrap(from_fn(my_mw))
+/// # ;
+/// ```
+///
+/// It is also possible to write a middleware that automatically uses extractors, similar to request
+/// handlers, by declaring them as the first parameters. As usual, **take care with extractors that
+/// consume the body stream**, since handlers will no longer be able to read it again without
+/// putting the body "back" into the request object within your middleware.
+///
+/// ```
+/// # use std::collections::HashMap;
+/// # use actix_web::{
+/// #     App, Error,
+/// #     body::MessageBody,
+/// #     dev::{ServiceRequest, ServiceResponse},
+/// #     http::header::{Accept, Date},
+/// #     web::{Header, Query},
+/// # };
+/// use actix_web::middleware::Next;
+///
+/// async fn my_extracting_mw(
+///     accept: Header<Accept>,
+///     query: Query<HashMap<String, String>>,
+///     req: ServiceRequest,
+///     next: Next<impl MessageBody>,
+/// ) -> Result<ServiceResponse<impl MessageBody>, Error> {
+///     // pre-processing
+///     next.call(req).await
+///     // post-processing
+/// }
+/// # App::new().wrap(actix_web::middleware::from_fn(my_extracting_mw));
+pub fn from_fn<F, Es>(mw_fn: F) -> MiddlewareFn<F, Es> {
+    MiddlewareFn {
+        mw_fn: Rc::new(mw_fn),
+        _phantom: PhantomData,
+    }
+}
+
+/// Middleware transform for [`from_fn`].
+#[allow(missing_debug_implementations)]
+pub struct MiddlewareFn<F, Es> {
+    mw_fn: Rc<F>,
+    _phantom: PhantomData<Es>,
+}
+
+impl<S, F, Fut, B, B2> Transform<S, ServiceRequest> for MiddlewareFn<F, ()>
+where
+    S: Service<ServiceRequest, Response = ServiceResponse<B>, Error = Error> + 'static,
+    F: Fn(ServiceRequest, Next<B>) -> Fut + 'static,
+    Fut: Future<Output = Result<ServiceResponse<B2>, Error>>,
+    B2: MessageBody,
+{
+    type Response = ServiceResponse<B2>;
+    type Error = Error;
+    type Transform = MiddlewareFnService<F, B, ()>;
+    type InitError = ();
+    type Future = Ready<Result<Self::Transform, Self::InitError>>;
+
+    fn new_transform(&self, service: S) -> Self::Future {
+        ready(Ok(MiddlewareFnService {
+            service: boxed::rc_service(service),
+            mw_fn: Rc::clone(&self.mw_fn),
+            _phantom: PhantomData,
+        }))
+    }
+}
+
+/// Middleware service for [`from_fn`].
+#[allow(missing_debug_implementations)]
+pub struct MiddlewareFnService<F, B, Es> {
+    service: RcService<ServiceRequest, ServiceResponse<B>, Error>,
+    mw_fn: Rc<F>,
+    _phantom: PhantomData<(B, Es)>,
+}
+
+impl<F, Fut, B, B2> Service<ServiceRequest> for MiddlewareFnService<F, B, ()>
+where
+    F: Fn(ServiceRequest, Next<B>) -> Fut,
+    Fut: Future<Output = Result<ServiceResponse<B2>, Error>>,
+    B2: MessageBody,
+{
+    type Response = ServiceResponse<B2>;
+    type Error = Error;
+    type Future = Fut;
+
+    forward_ready!(service);
+
+    fn call(&self, req: ServiceRequest) -> Self::Future {
+        (self.mw_fn)(
+            req,
+            Next::<B> {
+                service: Rc::clone(&self.service),
+            },
+        )
+    }
+}
+
+macro_rules! impl_middleware_fn_service {
+    ($($ext_type:ident),*) => {
+        impl<S, F, Fut, B, B2, $($ext_type),*> Transform<S, ServiceRequest> for MiddlewareFn<F, ($($ext_type),*,)>
+        where
+            S: Service<ServiceRequest, Response = ServiceResponse<B>, Error = Error> + 'static,
+            F: Fn($($ext_type),*, ServiceRequest, Next<B>) -> Fut + 'static,
+            $($ext_type: FromRequest + 'static,)*
+            Fut: Future<Output = Result<ServiceResponse<B2>, Error>> + 'static,
+            B: MessageBody + 'static,
+            B2: MessageBody + 'static,
+        {
+            type Response = ServiceResponse<B2>;
+            type Error = Error;
+            type Transform = MiddlewareFnService<F, B, ($($ext_type,)*)>;
+            type InitError = ();
+            type Future = Ready<Result<Self::Transform, Self::InitError>>;
+
+            fn new_transform(&self, service: S) -> Self::Future {
+                ready(Ok(MiddlewareFnService {
+                    service: boxed::rc_service(service),
+                    mw_fn: Rc::clone(&self.mw_fn),
+                    _phantom: PhantomData,
+                }))
+            }
+        }
+
+        impl<F, $($ext_type),*, Fut, B: 'static, B2> Service<ServiceRequest>
+            for MiddlewareFnService<F, B, ($($ext_type),*,)>
+        where
+            F: Fn(
+                $($ext_type),*,
+                ServiceRequest,
+                Next<B>
+            ) -> Fut + 'static,
+            $($ext_type: FromRequest + 'static,)*
+            Fut: Future<Output = Result<ServiceResponse<B2>, Error>> + 'static,
+            B2: MessageBody + 'static,
+        {
+            type Response = ServiceResponse<B2>;
+            type Error = Error;
+            type Future = LocalBoxFuture<'static, Result<Self::Response, Self::Error>>;
+
+            forward_ready!(service);
+
+            #[allow(nonstandard_style)]
+            fn call(&self, mut req: ServiceRequest) -> Self::Future {
+                let mw_fn = Rc::clone(&self.mw_fn);
+                let service = Rc::clone(&self.service);
+
+                Box::pin(async move {
+                    let ($($ext_type,)*) = req.extract::<($($ext_type,)*)>().await?;
+
+                    (mw_fn)($($ext_type),*, req, Next::<B> { service }).await
+                })
+            }
+        }
+    };
+}
+
+impl_middleware_fn_service!(E1);
+impl_middleware_fn_service!(E1, E2);
+impl_middleware_fn_service!(E1, E2, E3);
+impl_middleware_fn_service!(E1, E2, E3, E4);
+impl_middleware_fn_service!(E1, E2, E3, E4, E5);
+impl_middleware_fn_service!(E1, E2, E3, E4, E5, E6);
+impl_middleware_fn_service!(E1, E2, E3, E4, E5, E6, E7);
+impl_middleware_fn_service!(E1, E2, E3, E4, E5, E6, E7, E8);
+impl_middleware_fn_service!(E1, E2, E3, E4, E5, E6, E7, E8, E9);
+
+/// Wraps the "next" service in the middleware chain.
+#[allow(missing_debug_implementations)]
+pub struct Next<B> {
+    service: RcService<ServiceRequest, ServiceResponse<B>, Error>,
+}
+
+impl<B> Next<B> {
+    /// Equivalent to `Service::call(self, req)`.
+    pub fn call(&self, req: ServiceRequest) -> <Self as Service<ServiceRequest>>::Future {
+        Service::call(self, req)
+    }
+}
+
+impl<B> Service<ServiceRequest> for Next<B> {
+    type Response = ServiceResponse<B>;
+    type Error = Error;
+    type Future = BoxFuture<Result<Self::Response, Self::Error>>;
+
+    forward_ready!(service);
+
+    fn call(&self, req: ServiceRequest) -> Self::Future {
+        self.service.call(req)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::{
+        http::header::{self, HeaderValue},
+        middleware::{Compat, Logger},
+        test, web, App, HttpResponse,
+    };
+
+    async fn noop<B>(req: ServiceRequest, next: Next<B>) -> Result<ServiceResponse<B>, Error> {
+        next.call(req).await
+    }
+
+    async fn add_res_header<B>(
+        req: ServiceRequest,
+        next: Next<B>,
+    ) -> Result<ServiceResponse<B>, Error> {
+        let mut res = next.call(req).await?;
+        res.headers_mut()
+            .insert(header::WARNING, HeaderValue::from_static("42"));
+        Ok(res)
+    }
+
+    async fn mutate_body_type(
+        req: ServiceRequest,
+        next: Next<impl MessageBody + 'static>,
+    ) -> Result<ServiceResponse<impl MessageBody>, Error> {
+        let res = next.call(req).await?;
+        Ok(res.map_into_left_body::<()>())
+    }
+
+    struct MyMw(bool);
+
+    impl MyMw {
+        async fn mw_cb(
+            &self,
+            req: ServiceRequest,
+            next: Next<impl MessageBody + 'static>,
+        ) -> Result<ServiceResponse<impl MessageBody>, Error> {
+            let mut res = match self.0 {
+                true => req.into_response("short-circuited").map_into_right_body(),
+                false => next.call(req).await?.map_into_left_body(),
+            };
+            res.headers_mut()
+                .insert(header::WARNING, HeaderValue::from_static("42"));
+            Ok(res)
+        }
+
+        pub fn into_middleware<S, B>(
+            self,
+        ) -> impl Transform<
+            S,
+            ServiceRequest,
+            Response = ServiceResponse<impl MessageBody>,
+            Error = Error,
+            InitError = (),
+        >
+        where
+            S: Service<ServiceRequest, Response = ServiceResponse<B>, Error = Error> + 'static,
+            B: MessageBody + 'static,
+        {
+            let this = Rc::new(self);
+            from_fn(move |req, next| {
+                let this = Rc::clone(&this);
+                async move { Self::mw_cb(&this, req, next).await }
+            })
+        }
+    }
+
+    #[actix_rt::test]
+    async fn compat_compat() {
+        let _ = App::new().wrap(Compat::new(from_fn(noop)));
+        let _ = App::new().wrap(Compat::new(from_fn(mutate_body_type)));
+    }
+
+    #[actix_rt::test]
+    async fn permits_different_in_and_out_body_types() {
+        let app = test::init_service(
+            App::new()
+                .wrap(from_fn(mutate_body_type))
+                .wrap(from_fn(add_res_header))
+                .wrap(Logger::default())
+                .wrap(from_fn(noop))
+                .default_service(web::to(HttpResponse::NotFound)),
+        )
+        .await;
+
+        let req = test::TestRequest::default().to_request();
+        let res = test::call_service(&app, req).await;
+        assert!(res.headers().contains_key(header::WARNING));
+    }
+
+    #[actix_rt::test]
+    async fn closure_capture_and_return_from_fn() {
+        let app = test::init_service(
+            App::new()
+                .wrap(Logger::default())
+                .wrap(MyMw(true).into_middleware())
+                .wrap(Logger::default()),
+        )
+        .await;
+
+        let req = test::TestRequest::default().to_request();
+        let res = test::call_service(&app, req).await;
+        assert!(res.headers().contains_key(header::WARNING));
+    }
+}
--- a/actix-web/src/middleware/logger.rs
+++ b/actix-web/src/middleware/logger.rs
@ -622,11 +622,7 @@ impl FormatText {

            FormatText::ResponseHeader(ref name) => {
                let s = if let Some(val) = res.headers().get(name) {
-                    if let Ok(s) = val.to_str() {
-                        s
-                    } else {
-                        "-"
-                    }
+                    val.to_str().unwrap_or("-")
                } else {
                    "-"
                };
@ -670,11 +666,7 @@ impl FormatText {
            FormatText::RequestTime => *self = FormatText::Str(now.format(&Rfc3339).unwrap()),
            FormatText::RequestHeader(ref name) => {
                let s = if let Some(val) = req.headers().get(name) {
-                    if let Ok(s) = val.to_str() {
-                        s
-                    } else {
-                        "-"
-                    }
+                    val.to_str().unwrap_or("-")
                } else {
                    "-"
                };
--- a/actix-web/src/middleware/mod.rs
+++ b/actix-web/src/middleware/mod.rs
@ -15,10 +15,47 @@
 //! - Access external services (e.g., [sessions](https://docs.rs/actix-session), etc.)
 //!
 //! Middleware is registered for each [`App`], [`Scope`](crate::Scope), or
-//! [`Resource`](crate::Resource) and executed in opposite order as registration. In general, a
-//! middleware is a pair of types that implements the [`Service`] trait and [`Transform`] trait,
-//! respectively. The [`new_transform`] and [`call`] methods must return a [`Future`], though it
-//! can often be [an immediately-ready one](actix_utils::future::Ready).
+//! [`Resource`](crate::Resource) and executed in opposite order as registration.
+//!
+//! # Simple Middleware
+//!
+//! In many cases, you can model your middleware as an async function via the [`from_fn()`] helper
+//! that provides a natural interface for implementing your desired behaviors.
+//!
+//! ```
+//! # use actix_web::{
+//! #     App, Error,
+//! #     body::MessageBody,
+//! #     dev::{ServiceRequest, ServiceResponse, Service as _},
+//! # };
+//! use actix_web::middleware::{self, Next};
+//!
+//! async fn my_mw(
+//!     req: ServiceRequest,
+//!     next: Next<impl MessageBody>,
+//! ) -> Result<ServiceResponse<impl MessageBody>, Error> {
+//!     // pre-processing
+//!
+//!     // invoke the wrapped middleware or service
+//!     let res = next.call(req).await?;
+//!
+//!     // post-processing
+//!
+//!     Ok(res)
+//! }
+//!
+//! App::new()
+//!     .wrap(middleware::from_fn(my_mw));
+//! ```
+//!
+//! ## Complex Middleware
+//!
+//! In the more general ase, a middleware is a pair of types that implements the [`Service`] trait
+//! and [`Transform`] trait, respectively. The [`new_transform`] and [`call`] methods must return a
+//! [`Future`], though it can often be [an immediately-ready one](actix_utils::future::Ready).
+//!
+//! All the built-in middleware use this pattern with pairs of builder (`Transform`) +
+//! implementation (`Service`) types.
 //!
 //! # Ordering
 //!
@ -67,7 +104,7 @@
 //!                   Response
 //! ```
 //! The request _first_ gets processed by the middleware specified _last_ - `MiddlewareC`. It passes
-//! the request (modified a modified one) to the next middleware - `MiddlewareB` - _or_ directly
+//! the request (possibly a modified one) to the next middleware - `MiddlewareB` - _or_ directly
 //! responds to the request (e.g. when the request was invalid or an error occurred). `MiddlewareB`
 //! processes the request as well and passes it to `MiddlewareA`, which then passes it to the
 //! [`Service`]. In the [`Service`], the extractors will run first. They don't pass the request on,
@ -196,18 +233,6 @@
 //! # }
 //! ```
 //!
-//! # Simpler Middleware
-//!
-//! In many cases, you _can_ actually use an async function via a helper that will provide a more
-//! natural flow for your behavior.
-//!
-//! The experimental `actix_web_lab` crate provides a [`from_fn`][lab_from_fn] utility which allows
-//! an async fn to be wrapped and used in the same way as other middleware. See the
-//! [`from_fn`][lab_from_fn] docs for more info and examples of it's use.
-//!
-//! While [`from_fn`][lab_from_fn] is experimental currently, it's likely this helper will graduate
-//! to Actix Web in some form, so feedback is appreciated.
-//!
 //! [`Future`]: std::future::Future
 //! [`App`]: crate::App
 //! [`FromRequest`]: crate::FromRequest
@ -215,7 +240,7 @@
 //! [`Transform`]: crate::dev::Transform
 //! [`call`]: crate::dev::Service::call()
 //! [`new_transform`]: crate::dev::Transform::new_transform()
-//! [lab_from_fn]: https://docs.rs/actix-web-lab/latest/actix_web_lab/middleware/fn.from_fn.html
+//! [`from_fn`]: crate

 mod compat;
 #[cfg(feature = "__compress")]
@ -223,6 +248,7 @@ mod compress;
 mod condition;
 mod default_headers;
 mod err_handlers;
+mod from_fn;
 mod identity;
 mod logger;
 mod normalize;
@ -234,6 +260,7 @@ pub use self::{
    condition::Condition,
    default_headers::DefaultHeaders,
    err_handlers::{ErrorHandlerResponse, ErrorHandlers},
+    from_fn::{from_fn, Next},
    identity::Identity,
    logger::Logger,
    normalize::{NormalizePath, TrailingSlash},
--- a/actix-web/src/resource.rs
+++ b/actix-web/src/resource.rs
@ -358,10 +358,9 @@ where
        U::InitError: fmt::Debug,
    {
        // create and configure default resource
-        self.default = boxed::factory(
-            f.into_factory()
-                .map_init_err(|e| log::error!("Can not construct default service: {:?}", e)),
-        );
+        self.default = boxed::factory(f.into_factory().map_init_err(|err| {
+            log::error!("Can not construct default service: {err:?}");
+        }));

        self
    }
--- a/actix-web/src/response/builder.rs
+++ b/actix-web/src/response/builder.rs
@ -463,7 +463,7 @@ mod tests {
        // content type override
        let res = HttpResponse::Ok()
            .insert_header((CONTENT_TYPE, "text/json"))
-            .json(&vec!["v1", "v2", "v3"]);
+            .json(["v1", "v2", "v3"]);
        let ct = res.headers().get(CONTENT_TYPE).unwrap();
        assert_eq!(ct, HeaderValue::from_static("text/json"));
        assert_body_eq!(res, br#"["v1","v2","v3"]"#);
--- a/actix-web/src/scope.rs
+++ b/actix-web/src/scope.rs
@ -278,7 +278,9 @@ where
    {
        // create and configure default resource
        self.default = Some(Rc::new(boxed::factory(f.into_factory().map_init_err(
-            |e| log::error!("Can not construct default service: {:?}", e),
+            |err| {
+                log::error!("Can not construct default service: {err:?}");
+            },
        ))));

        self
--- a/actix-web/src/test/mod.rs
+++ b/actix-web/src/test/mod.rs
@ -1,6 +1,6 @@
 //! Various helpers for Actix applications to use during testing.
 //!
-//! # Creating A Test Service
+//! # Initializing A Test Service
 //! - [`init_service`]
 //!
 //! # Off-The-Shelf Test Services
@ -49,6 +49,7 @@ pub use self::{
 /// Must be used inside an async test. Works for both `ServiceRequest` and `HttpRequest`.
 ///
 /// # Examples
+///
 /// ```
 /// use actix_web::{http::StatusCode, HttpResponse};
 ///
--- a/actix-web/src/thin_data.rs
+++ b/actix-web/src/thin_data.rs
@ -0,0 +1,121 @@
+use std::any::type_name;
+
+use actix_utils::future::{ready, Ready};
+
+use crate::{dev::Payload, error, FromRequest, HttpRequest};
+
+/// Application data wrapper and extractor for cheaply-cloned types.
+///
+/// Similar to the [`Data`] wrapper but for `Clone`/`Copy` types that are already an `Arc` internally,
+/// share state using some other means when cloned, or is otherwise static data that is very cheap
+/// to clone.
+///
+/// Unlike `Data`, this wrapper clones `T` during extraction. Therefore, it is the user's
+/// responsibility to ensure that clones of `T` do actually share the same state, otherwise state
+/// may be unexpectedly different across multiple requests.
+///
+/// Note that if your type is literally an `Arc<T>` then it's recommended to use the
+/// [`Data::from(arc)`][data_from_arc] conversion instead.
+///
+/// # Examples
+///
+/// ```
+/// use actix_web::{
+///     web::{self, ThinData},
+///     App, HttpResponse, Responder,
+/// };
+///
+/// // Use the `ThinData<T>` extractor to access a database connection pool.
+/// async fn index(ThinData(db_pool): ThinData<DbPool>) -> impl Responder {
+///     // database action ...
+///
+///     HttpResponse::Ok()
+/// }
+///
+/// # type DbPool = ();
+/// let db_pool = DbPool::default();
+///
+/// App::new()
+///     .app_data(ThinData(db_pool.clone()))
+///     .service(web::resource("/").get(index))
+/// # ;
+/// ```
+///
+/// [`Data`]: crate::web::Data
+/// [data_from_arc]: crate::web::Data#impl-From<Arc<T>>-for-Data<T>
+#[derive(Debug, Clone)]
+pub struct ThinData<T>(pub T);
+
+impl_more::impl_as_ref!(ThinData<T> => T);
+impl_more::impl_as_mut!(ThinData<T> => T);
+impl_more::impl_deref_and_mut!(<T> in ThinData<T> => T);
+
+impl<T: Clone + 'static> FromRequest for ThinData<T> {
+    type Error = crate::Error;
+    type Future = Ready<Result<Self, Self::Error>>;
+
+    #[inline]
+    fn from_request(req: &HttpRequest, _: &mut Payload) -> Self::Future {
+        ready(req.app_data::<Self>().cloned().ok_or_else(|| {
+            log::debug!(
+                "Failed to extract `ThinData<{}>` for `{}` handler. For the ThinData extractor to work \
+                correctly, wrap the data with `ThinData()` and pass it to `App::app_data()`. \
+                Ensure that types align in both the set and retrieve calls.",
+                type_name::<T>(),
+                req.match_name().unwrap_or(req.path())
+            );
+
+            error::ErrorInternalServerError(
+                "Requested application data is not configured correctly. \
+                View/enable debug logs for more details.",
+            )
+        }))
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use std::sync::{Arc, Mutex};
+
+    use super::*;
+    use crate::{
+        http::StatusCode,
+        test::{call_service, init_service, TestRequest},
+        web, App, HttpResponse,
+    };
+
+    type TestT = Arc<Mutex<u32>>;
+
+    #[actix_rt::test]
+    async fn thin_data() {
+        let test_data = TestT::default();
+
+        let app = init_service(App::new().app_data(ThinData(test_data.clone())).service(
+            web::resource("/").to(|td: ThinData<TestT>| {
+                *td.lock().unwrap() += 1;
+                HttpResponse::Ok()
+            }),
+        ))
+        .await;
+
+        for _ in 0..3 {
+            let req = TestRequest::default().to_request();
+            let resp = call_service(&app, req).await;
+            assert_eq!(resp.status(), StatusCode::OK);
+        }
+
+        assert_eq!(*test_data.lock().unwrap(), 3);
+    }
+
+    #[actix_rt::test]
+    async fn thin_data_missing() {
+        let app = init_service(
+            App::new().service(web::resource("/").to(|_: ThinData<u32>| HttpResponse::Ok())),
+        )
+        .await;
+
+        let req = TestRequest::default().to_request();
+        let resp = call_service(&app, req).await;
+        assert_eq!(resp.status(), StatusCode::INTERNAL_SERVER_ERROR);
+    }
+}
--- a/actix-web/src/types/json.rs
+++ b/actix-web/src/types/json.rs
@ -400,7 +400,7 @@ impl<T: DeserializeOwned> JsonBody<T> {
                    _res: PhantomData,
                }
            }
-            JsonBody::Error(e) => JsonBody::Error(e),
+            JsonBody::Error(err) => JsonBody::Error(err),
        }
    }
 }
@ -453,7 +453,7 @@ impl<T: DeserializeOwned> Future for JsonBody<T> {
                    }
                }
            },
-            JsonBody::Error(e) => Poll::Ready(Err(e.take().unwrap())),
+            JsonBody::Error(err) => Poll::Ready(Err(err.take().unwrap())),
        }
    }
 }
--- a/actix-web/src/types/path.rs
+++ b/actix-web/src/types/path.rs
@ -4,7 +4,7 @@ use std::sync::Arc;

 use actix_router::PathDeserializer;
 use actix_utils::future::{ready, Ready};
-use derive_more::{AsRef, Deref, DerefMut, Display, From};
+use derive_more::derive::{AsRef, Deref, DerefMut, Display, From};
 use serde::de;

 use crate::{
@ -89,8 +89,8 @@ where
                    );

                    if let Some(error_handler) = error_handler {
-                        let e = PathError::Deserialize(err);
-                        (error_handler)(e, req)
+                        let err = PathError::Deserialize(err);
+                        (error_handler)(err, req)
                    } else {
                        ErrorNotFound(err)
                    }
@ -152,14 +152,14 @@ impl PathConfig {
 #[cfg(test)]
 mod tests {
    use actix_router::ResourceDef;
-    use derive_more::Display;
+    use derive_more::derive::Display;
    use serde::Deserialize;

    use super::*;
    use crate::{error, http, test::TestRequest, HttpResponse};

    #[derive(Deserialize, Debug, Display)]
-    #[display(fmt = "MyStruct({}, {})", key, value)]
+    #[display("MyStruct({}, {})", key, value)]
    struct MyStruct {
        key: String,
        value: String,
--- a/actix-web/src/types/query.rs
+++ b/actix-web/src/types/query.rs
@ -2,7 +2,7 @@

 use std::{fmt, ops, sync::Arc};

-use actix_utils::future::{err, ok, Ready};
+use actix_utils::future::{ok, ready, Ready};
 use serde::de::DeserializeOwned;
 #[cfg(feature = "beautify-errors")]
 use url::form_urlencoded::parse;
@ -138,8 +138,8 @@ impl<T: DeserializeOwned> FromRequest for Query<T> {

        serde_urlencoded::from_str::<T>(req.query_string())
            .map(|val| ok(Query(val)))
-            .unwrap_or_else(move |e| {
-                let e = QueryPayloadError::Deserialize(e);
+            .unwrap_or_else(move |err| {
+                let err = QueryPayloadError::Deserialize(err);

                log::debug!(
                    "Failed during Query extractor deserialization. \
@ -147,13 +147,13 @@ impl<T: DeserializeOwned> FromRequest for Query<T> {
                    req.path()
                );

-                let e = if let Some(error_handler) = error_handler {
-                    (error_handler)(e, req)
+                let err = if let Some(error_handler) = error_handler {
+                    (error_handler)(err, req)
                } else {
-                    e.into()
+                    err.into()
                };

-                err(e)
+                ready(Err(err))
            })
    }

@ -242,7 +242,7 @@ impl QueryConfig {
 #[cfg(test)]
 mod tests {
    use actix_http::StatusCode;
-    use derive_more::Display;
+    use derive_more::derive::Display;
    use serde::Deserialize;

    use super::*;
--- a/actix-web/src/web.rs
+++ b/actix-web/src/web.rs
@ -2,6 +2,7 @@
 //!
 //! # Request Extractors
 //! - [`Data`]: Application data item
+//! - [`ThinData`]: Cheap-to-clone application data item
 //! - [`ReqData`]: Request-local data item
 //! - [`Path`]: URL path parameters / dynamic segments
 //! - [`Query`]: URL query parameters
@ -22,7 +23,8 @@ use actix_router::IntoPatterns;
 pub use bytes::{Buf, BufMut, Bytes, BytesMut};

 pub use crate::{
-    config::ServiceConfig, data::Data, redirect::Redirect, request_data::ReqData, types::*,
+    config::ServiceConfig, data::Data, redirect::Redirect, request_data::ReqData,
+    thin_data::ThinData, types::*,
 };
 use crate::{
    error::BlockingError, http::Method, service::WebService, FromRequest, Handler, Resource,
--- a/awc/CHANGES.md
+++ b/awc/CHANGES.md
@ -2,11 +2,18 @@

 ## Unreleased

+- Prevent panics on connection pool drop when Tokio runtime is shutdown early.
+- Minimum supported Rust version (MSRV) is now 1.75.
+
+## 3.5.1
+
+- Fix WebSocket `Host` request header value when using a non-default port.
+
 ## 3.5.0

 - Add `rustls-0_23`, `rustls-0_23-webpki-roots`, and `rustls-0_23-native-roots` crate features.
 - Add `awc::Connector::rustls_0_23()` constructor.
- Fix `rustls-0_22-native-roots` root store lookup
+- Fix `rustls-0_22-native-roots` root store lookup.
 - Update `brotli` dependency to `6`.
 - Minimum supported Rust version (MSRV) is now 1.72.

--- a/awc/Cargo.toml
+++ b/awc/Cargo.toml
@ -1,6 +1,6 @@
 [package]
 name = "awc"
-version = "3.5.0"
+version = "3.5.1"
 authors = ["Nikolay Kim <fafhrd91@gmail.com>"]
 description = "Async HTTP and WebSocket client library"
 keywords = ["actix", "http", "framework", "async", "web"]
@ -106,7 +106,7 @@ actix-utils = "3"
 base64 = "0.22"
 bytes = "1"
 cfg-if = "1"
-derive_more = "0.99.5"
+derive_more = { version = "1", features = ["display", "error", "from"] }
 futures-core = { version = "0.3.17", default-features = false, features = ["alloc"] }
 futures-util = { version = "0.3.17", default-features = false, features = ["alloc", "sink"] }
 h2 = "0.3.26"
--- a/awc/README.md
+++ b/awc/README.md
@ -5,9 +5,9 @@
 <!-- prettier-ignore-start -->

 [![crates.io](https://img.shields.io/crates/v/awc?label=latest)](https://crates.io/crates/awc)
-[![Documentation](https://docs.rs/awc/badge.svg?version=3.5.0)](https://docs.rs/awc/3.5.0)
+[![Documentation](https://docs.rs/awc/badge.svg?version=3.5.1)](https://docs.rs/awc/3.5.1)
 ![MIT or Apache 2.0 licensed](https://img.shields.io/crates/l/awc)
-[![Dependency Status](https://deps.rs/crate/awc/3.5.0/status.svg)](https://deps.rs/crate/awc/3.5.0)
+[![Dependency Status](https://deps.rs/crate/awc/3.5.1/status.svg)](https://deps.rs/crate/awc/3.5.1)
 [![Chat on Discord](https://img.shields.io/discord/771444961383153695?label=chat&logo=discord)](https://discord.gg/NWpN5mmg3x)

 <!-- prettier-ignore-end -->
--- a/awc/src/client/error.rs
+++ b/awc/src/client/error.rs
@ -3,7 +3,7 @@ use std::{fmt, io};
 use actix_http::error::{HttpError, ParseError};
 #[cfg(feature = "openssl")]
 use actix_tls::accept::openssl::reexports::Error as OpensslError;
-use derive_more::{Display, From};
+use derive_more::derive::{Display, From};

 use crate::BoxError;

@ -12,40 +12,40 @@ use crate::BoxError;
 #[non_exhaustive]
 pub enum ConnectError {
    /// SSL feature is not enabled
-    #[display(fmt = "SSL is not supported")]
+    #[display("SSL is not supported")]
    SslIsNotSupported,

    /// SSL error
    #[cfg(feature = "openssl")]
-    #[display(fmt = "{}", _0)]
+    #[display("{}", _0)]
    SslError(OpensslError),

    /// Failed to resolve the hostname
-    #[display(fmt = "Failed resolving hostname: {}", _0)]
+    #[display("Failed resolving hostname: {}", _0)]
    Resolver(Box<dyn std::error::Error>),

    /// No dns records
-    #[display(fmt = "No DNS records found for the input")]
+    #[display("No DNS records found for the input")]
    NoRecords,

    /// Http2 error
-    #[display(fmt = "{}", _0)]
+    #[display("{}", _0)]
    H2(h2::Error),

    /// Connecting took too long
-    #[display(fmt = "Timeout while establishing connection")]
+    #[display("Timeout while establishing connection")]
    Timeout,

    /// Connector has been disconnected
-    #[display(fmt = "Internal error: connector has been disconnected")]
+    #[display("Internal error: connector has been disconnected")]
    Disconnected,

    /// Unresolved host name
-    #[display(fmt = "Connector received `Connect` method with unresolved host")]
+    #[display("Connector received `Connect` method with unresolved host")]
    Unresolved,

    /// Connection io error
-    #[display(fmt = "{}", _0)]
+    #[display("{}", _0)]
    Io(io::Error),
 }

@ -54,11 +54,11 @@ impl std::error::Error for ConnectError {}
 impl From<actix_tls::connect::ConnectError> for ConnectError {
    fn from(err: actix_tls::connect::ConnectError) -> ConnectError {
        match err {
-            actix_tls::connect::ConnectError::Resolver(e) => ConnectError::Resolver(e),
+            actix_tls::connect::ConnectError::Resolver(err) => ConnectError::Resolver(err),
            actix_tls::connect::ConnectError::NoRecords => ConnectError::NoRecords,
            actix_tls::connect::ConnectError::InvalidInput => panic!(),
            actix_tls::connect::ConnectError::Unresolved => ConnectError::Unresolved,
-            actix_tls::connect::ConnectError::Io(e) => ConnectError::Io(e),
+            actix_tls::connect::ConnectError::Io(err) => ConnectError::Io(err),
        }
    }
 }
@ -66,16 +66,16 @@ impl From<actix_tls::connect::ConnectError> for ConnectError {
 #[derive(Debug, Display, From)]
 #[non_exhaustive]
 pub enum InvalidUrl {
-    #[display(fmt = "Missing URL scheme")]
+    #[display("Missing URL scheme")]
    MissingScheme,

-    #[display(fmt = "Unknown URL scheme")]
+    #[display("Unknown URL scheme")]
    UnknownScheme,

-    #[display(fmt = "Missing host name")]
+    #[display("Missing host name")]
    MissingHost,

-    #[display(fmt = "URL parse error: {}", _0)]
+    #[display("URL parse error: {}", _0)]
    HttpError(http::Error),
 }

@ -86,11 +86,11 @@ impl std::error::Error for InvalidUrl {}
 #[non_exhaustive]
 pub enum SendRequestError {
    /// Invalid URL
-    #[display(fmt = "Invalid URL: {}", _0)]
+    #[display("Invalid URL: {}", _0)]
    Url(InvalidUrl),

    /// Failed to connect to host
-    #[display(fmt = "Failed to connect to host: {}", _0)]
+    #[display("Failed to connect to host: {}", _0)]
    Connect(ConnectError),

    /// Error sending request
@ -100,26 +100,26 @@ pub enum SendRequestError {
    Response(ParseError),

    /// Http error
-    #[display(fmt = "{}", _0)]
+    #[display("{}", _0)]
    Http(HttpError),

    /// Http2 error
-    #[display(fmt = "{}", _0)]
+    #[display("{}", _0)]
    H2(h2::Error),

    /// Response took too long
-    #[display(fmt = "Timeout while waiting for response")]
+    #[display("Timeout while waiting for response")]
    Timeout,

    /// Tunnels are not supported for HTTP/2 connection
-    #[display(fmt = "Tunnels are not supported for http2 connection")]
+    #[display("Tunnels are not supported for http2 connection")]
    TunnelNotSupported,

    /// Error sending request body
    Body(BoxError),

    /// Other errors that can occur after submitting a request.
-    #[display(fmt = "{:?}: {}", _1, _0)]
+    #[display("{:?}: {}", _1, _0)]
    Custom(BoxError, Box<dyn fmt::Debug>),
 }

@ -130,15 +130,15 @@ impl std::error::Error for SendRequestError {}
 #[non_exhaustive]
 pub enum FreezeRequestError {
    /// Invalid URL
-    #[display(fmt = "Invalid URL: {}", _0)]
+    #[display("Invalid URL: {}", _0)]
    Url(InvalidUrl),

    /// HTTP error
-    #[display(fmt = "{}", _0)]
+    #[display("{}", _0)]
    Http(HttpError),

    /// Other errors that can occur after submitting a request.
-    #[display(fmt = "{:?}: {}", _1, _0)]
+    #[display("{:?}: {}", _1, _0)]
    Custom(BoxError, Box<dyn fmt::Debug>),
 }

--- a/awc/src/client/pool.rs
+++ b/awc/src/client/pool.rs
@ -31,7 +31,7 @@ use super::{
    Connect,
 };

-#[derive(Hash, Eq, PartialEq, Clone, Debug)]
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
 pub struct Key {
    authority: Authority,
 }
@ -42,8 +42,8 @@ impl From<Authority> for Key {
    }
 }

+/// Connections pool to reuse I/O per [`Authority`].
 #[doc(hidden)]
-/// Connections pool for reuse Io type for certain [`http::uri::Authority`] as key.
 pub struct ConnectionPool<S, Io>
 where
    Io: AsyncWrite + Unpin + 'static,
@ -52,7 +52,7 @@ where
    inner: ConnectionPoolInner<Io>,
 }

-/// wrapper type for check the ref count of Rc.
+/// Wrapper type for check the ref count of Rc.
 pub struct ConnectionPoolInner<Io>(Rc<ConnectionPoolInnerPriv<Io>>)
 where
    Io: AsyncWrite + Unpin + 'static;
@ -63,7 +63,7 @@ where
 {
    fn new(config: ConnectorConfig) -> Self {
        let permits = Arc::new(Semaphore::new(config.limit));
-        let available = RefCell::new(HashMap::default());
+        let available = RefCell::new(HashMap::new());

        Self(Rc::new(ConnectionPoolInnerPriv {
            config,
@ -72,11 +72,13 @@ where
        }))
    }

-    /// spawn a async for graceful shutdown h1 Io type with a timeout.
+    /// Spawns a graceful shutdown task for the underlying I/O with a timeout.
    fn close(&self, conn: ConnectionInnerType<Io>) {
        if let Some(timeout) = self.config.disconnect_timeout {
            if let ConnectionInnerType::H1(io) = conn {
-                actix_rt::spawn(CloseConnection::new(io, timeout));
+                if tokio::runtime::Handle::try_current().is_ok() {
+                    actix_rt::spawn(CloseConnection::new(io, timeout));
+                }
            }
        }
    }
--- a/awc/src/error.rs
+++ b/awc/src/error.rs
@ -7,7 +7,7 @@ pub use actix_http::{
    ws::{HandshakeError as WsHandshakeError, ProtocolError as WsProtocolError},
    StatusCode,
 };
-use derive_more::{Display, From};
+use derive_more::derive::{Display, From};
 use serde_json::error::Error as JsonError;

 pub use crate::client::{ConnectError, FreezeRequestError, InvalidUrl, SendRequestError};
@ -18,35 +18,35 @@ pub use crate::client::{ConnectError, FreezeRequestError, InvalidUrl, SendReques
 #[derive(Debug, Display, From)]
 pub enum WsClientError {
    /// Invalid response status
-    #[display(fmt = "Invalid response status")]
+    #[display("Invalid response status")]
    InvalidResponseStatus(StatusCode),

    /// Invalid upgrade header
-    #[display(fmt = "Invalid upgrade header")]
+    #[display("Invalid upgrade header")]
    InvalidUpgradeHeader,

    /// Invalid connection header
-    #[display(fmt = "Invalid connection header")]
+    #[display("Invalid connection header")]
    InvalidConnectionHeader(HeaderValue),

    /// Missing Connection header
-    #[display(fmt = "Missing Connection header")]
+    #[display("Missing Connection header")]
    MissingConnectionHeader,

    /// Missing Sec-Websocket-Accept header
-    #[display(fmt = "Missing Sec-Websocket-Accept header")]
+    #[display("Missing Sec-Websocket-Accept header")]
    MissingWebSocketAcceptHeader,

    /// Invalid challenge response
-    #[display(fmt = "Invalid challenge response")]
+    #[display("Invalid challenge response")]
    InvalidChallengeResponse([u8; 28], HeaderValue),

    /// Protocol error
-    #[display(fmt = "{}", _0)]
+    #[display("{}", _0)]
    Protocol(WsProtocolError),

    /// Send request error
-    #[display(fmt = "{}", _0)]
+    #[display("{}", _0)]
    SendRequest(SendRequestError),
 }

@ -68,13 +68,13 @@ impl From<HttpError> for WsClientError {
 #[derive(Debug, Display, From)]
 pub enum JsonPayloadError {
    /// Content type error
-    #[display(fmt = "Content type error")]
+    #[display("Content type error")]
    ContentType,
    /// Deserialize error
-    #[display(fmt = "Json deserialize error: {}", _0)]
+    #[display("Json deserialize error: {}", _0)]
    Deserialize(JsonError),
    /// Payload error
-    #[display(fmt = "Error that occur during reading payload: {}", _0)]
+    #[display("Error that occur during reading payload: {}", _0)]
    Payload(PayloadError),
 }

--- a/awc/src/frozen.rs
+++ b/awc/src/frozen.rs
@ -147,8 +147,8 @@ impl FrozenSendBuilder {

    /// Complete request construction and send a body.
    pub fn send_body(self, body: impl MessageBody + 'static) -> SendClientRequest {
-        if let Some(e) = self.err {
-            return e.into();
+        if let Some(err) = self.err {
+            return err.into();
        }

        RequestSender::Rc(self.req.head, Some(self.extra_headers)).send_body(
@ -177,8 +177,8 @@ impl FrozenSendBuilder {

    /// Complete request construction and send an urlencoded body.
    pub fn send_form(self, value: impl Serialize) -> SendClientRequest {
-        if let Some(e) = self.err {
-            return e.into();
+        if let Some(err) = self.err {
+            return err.into();
        }

        RequestSender::Rc(self.req.head, Some(self.extra_headers)).send_form(
@ -196,8 +196,8 @@ impl FrozenSendBuilder {
        S: Stream<Item = Result<Bytes, E>> + 'static,
        E: Into<BoxError> + 'static,
    {
-        if let Some(e) = self.err {
-            return e.into();
+        if let Some(err) = self.err {
+            return err.into();
        }

        RequestSender::Rc(self.req.head, Some(self.extra_headers)).send_stream(
@ -211,8 +211,8 @@ impl FrozenSendBuilder {

    /// Complete request construction and send an empty body.
    pub fn send(self) -> SendClientRequest {
-        if let Some(e) = self.err {
-            return e.into();
+        if let Some(err) = self.err {
+            return err.into();
        }

        RequestSender::Rc(self.req.head, Some(self.extra_headers)).send(
--- a/awc/src/request.rs
+++ b/awc/src/request.rs
@ -415,8 +415,8 @@ impl ClientRequest {

    // allow unused mut when cookies feature is disabled
    fn prep_for_sending(#[allow(unused_mut)] mut self) -> Result<Self, PrepForSendingError> {
-        if let Some(e) = self.err {
-            return Err(e.into());
+        if let Some(err) = self.err {
+            return Err(err.into());
        }

        // validate uri
--- a/awc/src/sender.rs
+++ b/awc/src/sender.rs
@ -17,7 +17,7 @@ use actix_http::{
 use actix_http::{encoding::Decoder, header::ContentEncoding, Payload};
 use actix_rt::time::{sleep, Sleep};
 use bytes::Bytes;
-use derive_more::From;
+use derive_more::derive::From;
 use futures_core::Stream;
 use serde::Serialize;

@ -54,8 +54,8 @@ impl From<PrepForSendingError> for FreezeRequestError {
 impl From<PrepForSendingError> for SendRequestError {
    fn from(err: PrepForSendingError) -> SendRequestError {
        match err {
-            PrepForSendingError::Url(e) => SendRequestError::Url(e),
-            PrepForSendingError::Http(e) => SendRequestError::Http(e),
+            PrepForSendingError::Url(err) => SendRequestError::Url(err),
+            PrepForSendingError::Http(err) => SendRequestError::Http(err),
            PrepForSendingError::Json(err) => {
                SendRequestError::Custom(Box::new(err), Box::new("json serialization error"))
            }
@ -156,20 +156,20 @@ impl Future for SendClientRequest {
 }

 impl From<SendRequestError> for SendClientRequest {
-    fn from(e: SendRequestError) -> Self {
-        SendClientRequest::Err(Some(e))
+    fn from(err: SendRequestError) -> Self {
+        SendClientRequest::Err(Some(err))
    }
 }

 impl From<HttpError> for SendClientRequest {
-    fn from(e: HttpError) -> Self {
-        SendClientRequest::Err(Some(e.into()))
+    fn from(err: HttpError) -> Self {
+        SendClientRequest::Err(Some(err.into()))
    }
 }

 impl From<PrepForSendingError> for SendClientRequest {
-    fn from(e: PrepForSendingError) -> Self {
-        SendClientRequest::Err(Some(e.into()))
+    fn from(err: PrepForSendingError) -> Self {
+        SendClientRequest::Err(Some(err.into()))
    }
 }

--- a/awc/src/ws.rs
+++ b/awc/src/ws.rs
@ -253,12 +253,13 @@ impl WebsocketsRequest {
    pub async fn connect(
        mut self,
    ) -> Result<(ClientResponse, Framed<BoxedSocket, Codec>), WsClientError> {
-        if let Some(e) = self.err.take() {
-            return Err(e.into());
+        if let Some(err) = self.err.take() {
+            return Err(err.into());
        }

-        // validate uri
+        // validate URI
        let uri = &self.head.uri;
+
        if uri.host().is_none() {
            return Err(InvalidUrl::MissingHost.into());
        } else if uri.scheme().is_none() {
@ -273,9 +274,12 @@ impl WebsocketsRequest {
        }

        if !self.head.headers.contains_key(header::HOST) {
+            let hostname = uri.host().unwrap();
+            let port = uri.port();
+
            self.head.headers.insert(
                header::HOST,
-                HeaderValue::from_str(uri.host().unwrap()).unwrap(),
+                HeaderValue::from_str(&Host { hostname, port }.to_string()).unwrap(),
            );
        }

@ -434,6 +438,25 @@ impl fmt::Debug for WebsocketsRequest {
    }
 }

+/// Formatter for host (hostname+port) header values.
+struct Host<'a> {
+    hostname: &'a str,
+    port: Option<http::uri::Port<&'a str>>,
+}
+
+impl<'a> fmt::Display for Host<'a> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.write_str(self.hostname)?;
+
+        if let Some(port) = &self.port {
+            f.write_str(":")?;
+            f.write_str(port.as_str())?;
+        }
+
+        Ok(())
+    }
+}
+
 #[cfg(test)]
 mod tests {
    use super::*;