Cache rust toolchain in setup-rust action

.github/actions/setup-rust/action.yml

@@ -37,6 +37,19 @@ runs:
         restore-keys: |
           ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
 
+    - name: Sanitize components input
+      shell: bash
+      run: echo "SANITIZED_COMPONENTS=${{ inputs.components }}" | sed -E 's/, ?| /-/g' >> $GITHUB_ENV
+
+    - name: Cache Rust toolchain
+      uses: actions/cache@v4
+      with:
+        path: ~/.rustup
+        # Key includes the OS and the toolchain version (e.g., 'stable')
+        key: ${{ runner.os }}-rustup-${{ hashFiles('rust-toolchain.toml') }}-v1-${{ inputs.toolchain }}-${{ env.SANITIZED_COMPONENTS }}
+        restore-keys: |
+          ${{ runner.os }}-rustup-
+
     - name: Cache cargo build (target)
       uses: actions/cache@v3
       with:
@@ -44,7 +57,6 @@ runs:
         key: ${{ runner.os }}-cargo-build-${{ hashFiles('**/Cargo.lock') }}
         restore-keys: |
           ${{ runner.os }}-cargo-build-${{ hashFiles('**/Cargo.lock') }}
-
     - name: Set up rust toolchain
       uses: dtolnay/rust-toolchain@stable
       with: