cache rust stuff

.github/workflows/build-and-cache.yml

@@ -17,6 +17,19 @@ jobs:
       - uses: DeterminateSystems/nix-installer-action@main
         with:
           logger: pretty
+
+      # use sccache for Rust
+      - name: Run sccache-cache
+        if: (env.SCCACHE_GHA_ENABLED == 'true')
+        uses: mozilla-actions/sccache-action@main
+
+      # use rust-cache
+      - uses: Swatinem/rust-cache@v2
+        with:
+          cache-all-crates: "true"
+          cache-on-failure: "true"
+          cache-targets: "true"
+
       - uses: DeterminateSystems/magic-nix-cache-action@main
       - name: Setup Attic cache
         uses: ryanccn/attic-action@v0