Chore(ci): Update rust, cargo and cache actions (#177)

* chore(ci): Update rust setup and cache action
* chore(ci): Remove legacy-tokio from test matrix

This was removed as it doesn't seem to be used any more.

.github/workflows/ci.yml

@@ -6,28 +6,24 @@ jobs:
   lint:
     name: Lint
     runs-on: ubuntu-latest
-
     steps:
       - name: Checkout sources
         uses: actions/checkout@v3
       - name: Install toolchain
-      uses: actions-rs/toolchain@v1
+        uses: dtolnay/rust-toolchain@master
         with:
           toolchain: nightly
-        components: rustfmt, clippy
+          components: rustfmt,clippy
-        override: true
+      - name: Setup cache
+        uses: Swatinem/rust-cache@v2
       - name: Rustfmt
         run: cargo +nightly fmt --all -- --check
       - name: Clippy
-      uses: actions-rs/clippy-check@v1
+        run: cargo clippy --features full-doc
-      with:
-        token: ${{ secrets.GITHUB_TOKEN }}
-        args: --features full-doc
 
   test:
     name: Test
     runs-on: ${{ matrix.os || 'ubuntu-latest' }}
-
     strategy:
       fail-fast: false
       matrix:
@@ -40,7 +36,6 @@ jobs:
           - driver only
           - gateway only
           - simd json
-
         include:
           - name: beta
             toolchain: beta
@@ -62,61 +57,39 @@ jobs:
             features: simd-json serenity rustls driver gateway serenity?/simd_json
             rustflags: -C target-cpu=native
             dont-test: true
-
     steps:
       - name: Checkout sources
         uses: actions/checkout@v3
-
       - name: Install toolchain
-        id: tc
+        uses: dtolnay/rust-toolchain@master
-        uses: actions-rs/toolchain@v1
         with:
           toolchain: ${{ matrix.toolchain || 'stable' }}
-          profile: minimal
+      - name: Setup cache
-          override: true
+        uses: Swatinem/rust-cache@v2
-
       - name: Install dependencies
         if: runner.os == 'Linux'
         run: |
           sudo apt-get update
-          sudo apt-get install -y libopus-dev
-
       - name: Install yt-dlp (Unix)
         if: runner.os != 'Windows'
         run: |
           sudo wget https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp -O /usr/local/bin/yt-dlp
           sudo chmod a+rx /usr/local/bin/yt-dlp
-
       - name: Install yt-dlp (Windows)
         if: runner.os == 'Windows'
         run: choco install yt-dlp
-
-      - name: Setup cache
-        if: runner.os != 'macOS'
-        uses: actions/cache@v2
-        with:
-          path: |
-            ~/.cargo/registry
-            ~/.cargo/git
-            target
-          key: ${{ runner.os }}-test-${{ steps.tc.outputs.rustc_hash }}-${{ hashFiles('**/Cargo.toml') }}
-
       - name: Set RUSTFLAGS
         if: runner.os != 'Windows'
         run: echo "RUSTFLAGS=${{ matrix.rustflags || '' }}" >> $GITHUB_ENV
-
       - name: Build all features
         if: matrix.features == ''
         run: cargo build --features full-doc
-
       - name: Test all features
         if: ${{ !matrix.dont-test && matrix.features == '' }}
         run: cargo test --features full-doc
-
       - name: Build some features
         if: matrix.features
         run: cargo build --no-default-features --features "${{ matrix.features }}"
-
       - name: Test some features
         if: ${{ !matrix.dont-test && matrix.features }}
         run: cargo test --no-default-features --features "${{ matrix.features }}"
@@ -124,32 +97,19 @@ jobs:
   doc:
     name: Build docs
     runs-on: ubuntu-latest
-
     steps:
       - name: Checkout sources
         uses: actions/checkout@v3
-
       - name: Install toolchain
-        id: tc
+        uses: dtolnay/rust-toolchain@master
-        uses: actions-rs/toolchain@v1
         with:
           toolchain: nightly
-          profile: minimal
+      - name: Setup cache
-          override: true
+        uses: Swatinem/rust-cache@v2
-
       - name: Install dependencies
         run: |
           sudo apt-get update
           sudo apt-get install -y libopus-dev
-
-      - name: Setup cache
-        uses: actions/cache@v2
-        with:
-          path: |
-            ~/.cargo/registry
-            ~/.cargo/git
-          key: ${{ runner.os }}-docs-${{ steps.tc.outputs.rustc_hash }}-${{ hashFiles('**/Cargo.toml') }}
-
       - name: Build docs
         env:
           RUSTDOCFLAGS: -D broken_intra_doc_links
@@ -159,45 +119,34 @@ jobs:
   examples:
     name: Examples
     runs-on: ubuntu-latest
-
     steps:
       - name: Checkout sources
         uses: actions/checkout@v3
-
       - name: Install toolchain
-        id: tc
+        uses: dtolnay/rust-toolchain@master
-        uses: actions-rs/toolchain@v1
         with:
           toolchain: stable
-          profile: minimal
+      - name: Setup cache
-          override: true
+        uses: Swatinem/rust-cache@v2
-
+        with:
+          workspaces: examples
       - name: Install dependencies
         run: |
           sudo apt-get update
           sudo apt-get install -y libopus-dev
 
-      - name: Setup cache
+      - name: Build serenity/voice
-        uses: actions/cache@v2
-        with:
-          path: |
-            ~/.cargo/registry
-            ~/.cargo/git
-            examples/target
-          key: ${{ runner.os }}-examples-${{ steps.tc.outputs.rustc_hash }}-${{ hashFiles('**/Cargo.toml') }}
-
-      - name: 'Build serenity/voice'
         working-directory: examples
         run: cargo build -p voice
-      - name: 'Build serenity/voice_events_queue'
+      - name: Build serenity/voice_events_queue
         working-directory: examples
         run: cargo build -p voice_events_queue
-      - name: 'Build serenity/voice_receive'
+      - name: Build serenity/voice_receive
         working-directory: examples
         run: cargo build -p voice_receive
-      - name: 'Build serenity/voice_cached_audio'
+      - name: Build serenity/voice_cached_audio
         working-directory: examples
         run: cargo build -p voice_cached_audio
-      - name: 'Build twilight'
+      - name: Build twilight
         working-directory: examples
         run: cargo build -p twilight