Check code style with rustfmt on CI

.github/PULL_REQUEST_TEMPLATE.md

@@ -12,6 +12,7 @@ Check your PR fulfills the following:
 - [ ] Tests for the changes have been added / updated.
 - [ ] Documentation comments have been added / updated.
 - [ ] A changelog entry has been made for the appropriate packages.
+- [ ] Format code with the latest stable rustfmt
 
 
 ## Overview

.github/workflows/clippy-fmt.yml

@@ -0,0 +1,34 @@
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+name: Clippy and rustfmt Check
+jobs:
+  clippy_check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          components: rustfmt
+          profile: minimal
+          override: true
+      - name: Check with rustfmt
+        uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --all -- --check
+
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: nightly
+          components: clippy
+          profile: minimal
+          override: true
+      - name: Check with Clippy
+        uses: actions-rs/clippy-check@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          args: --all-features --all --tests

actix-codec/src/bcodec.rs

@@ -1,4 +1,4 @@
-use bytes::{Bytes, BytesMut, Buf};
+use bytes::{Buf, Bytes, BytesMut};
 use std::io;
 
 use super::{Decoder, Encoder};

actix-codec/src/framed.rs

@@ -271,7 +271,10 @@ impl<T, U> Framed<T, U> {
     }
 
     /// Flush write buffer to underlying I/O stream.
-    pub fn flush<I>(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), U::Error>>
+    pub fn flush<I>(
+        mut self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+    ) -> Poll<Result<(), U::Error>>
     where
         T: AsyncWrite,
         U: Encoder<I>,
@@ -304,7 +307,10 @@ impl<T, U> Framed<T, U> {
     }
 
     /// Flush write buffer and shutdown underlying I/O stream.
-    pub fn close<I>(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), U::Error>>
+    pub fn close<I>(
+        mut self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+    ) -> Poll<Result<(), U::Error>>
     where
         T: AsyncWrite,
         U: Encoder<I>,