Test: alternative cargo cache method

.github/workflows/validate.yml

@@ -9,30 +9,16 @@ jobs:
         git config --global core.autocrlf input
 
     - name: checkout
-      uses: actions/checkout@v3
-      with:
-        fetch-depth: 0
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
 
-    - name: Install Rust
-      uses: actions-rs/toolchain@v1
-      with:
-        toolchain: stable
-        target: x86_64-unknown-linux-gnu
-        override: true
-        components: rustfmt, clippy
-
-    - name: Set up cargo cache
-      uses: actions/cache@v3
-      continue-on-error: false
-      with:
-        path: |
-          ~/.cargo/bin/
-          ~/.cargo/registry/index/
-          ~/.cargo/registry/cache/
-          ~/.cargo/git/db/
-          **/target/
-        key: ${{ runner.os }}-cargo-${{ hashFiles('Cargo.lock') }}
-        restore-keys: ${{ runner.os }}-cargo-
+      - run: |
+          rustup set auto-self-update disable
+          rustup toolchain install stable --profile minimal
+      - uses: Swatinem/rust-cache@v2
+        with:
+          workspaces: zeroidc -> target
 
     - name: validate-1m-linux
       env: