fix(ci): change cache & toolchain install (#1019)

.github/workflows/build.yml

@@ -20,10 +20,9 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: install stable
-        uses: actions-rs/toolchain@v1
+        uses: dtolnay/rust-toolchain@stable
         with:
-          toolchain: stable
-          target: ${{ matrix.platform.target }}
+          targets: ${{ matrix.platform.target }}
 
       - name: install webkit2gtk (ubuntu only)
         if: contains(matrix.platform.target, 'gnu')
@@ -38,41 +37,7 @@ jobs:
           Invoke-WebRequest https://go.microsoft.com/fwlink/p/?LinkId=2124703 -OutFile installwebview.exe -UseBasicParsing
           cmd /C start /wait installwebview.exe /silent /install
 
-      - name: Get current date
-        run: echo "CURRENT_DATE=$(date +'%Y-%m-%d')" >> $GITHUB_ENV
-
-      - name: Cache cargo registry
-        uses: actions/[email protected]
-        with:
-          path: ~/.cargo/registry
-          # Add date to the cache to keep it up to date
-          key: ${{ matrix.platform }}-stable-cargo-registry-${{ hashFiles('Cargo.toml') }}-${{ env.CURRENT_DATE }}
-          # Restore from outdated cache for speed
-          restore-keys: |
-            ${{ matrix.platform }}-stable-cargo-registry-${{ hashFiles('Cargo.toml') }}
-            ${{ matrix.platform }}-stable-cargo-registry-
-
-      - name: Cache cargo index
-        uses: actions/[email protected]
-        with:
-          path: ~/.cargo/git
-          # Add date to the cache to keep it up to date
-          key: ${{ matrix.platform }}-stable-cargo-index-${{ hashFiles('Cargo.toml') }}-${{ env.CURRENT_DATE }}
-          # Restore from outdated cache for speed
-          restore-keys: |
-            ${{ matrix.platform }}-stable-cargo-index-${{ hashFiles('Cargo.toml') }}
-            ${{ matrix.platform }}-stable-cargo-index-
-
-      - name: Cache cargo target
-        uses: actions/cache@v2
-        with:
-          path: target
-          # Add date to the cache to keep it up to date
-          key: ${{ matrix.platform }}-stable-cargo-core-${{ hashFiles('Cargo.toml') }}-${{ env.CURRENT_DATE }}
-          # Restore from outdated cache for speed
-          restore-keys: |
-            ${{ matrix.platform }}-stable-cargo-core-${{ hashFiles('Cargo.toml') }}
-            ${{ matrix.platform }}-stable-cargo-core-
+      - uses: Swatinem/rust-cache@v2
 
       - name: build wry
         run: cargo build --target ${{ matrix.platform.target }}
@@ -95,4 +60,3 @@ jobs:
           contains(matrix.platform.target, 'windows') ||
           contains(matrix.platform.target, 'apple'))
         run: cargo build --no-default-features --features winit --target ${{ matrix.platform.target }}
-