add CI cache

Author: andrewgazelka

.github/workflows/clippy.yml

@@ -18,6 +18,7 @@ jobs:
           toolchain: nightly
           components: clippy
           override: true
+      - uses: Swatinem/rust-cache@v2
       - uses: actions-rs/clippy-check@v1
         with:
           token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/tests.yml

@@ -13,11 +13,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@master
-      - id: component
-        uses: actions-rs/components-nightly@v1
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: ${{ steps.component.outputs.toolchain }}
           override: true
+      - uses: Swatinem/rust-cache@v2
       - name: Run tests
         run: cargo test --verbose