Cache rust artifacts

Author: Athos Couto

.github/workflows/rust.yml

@@ -25,6 +25,19 @@ jobs:
         with:
           submodules: recursive
 
+      - 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-
+
       - name: Cargo fmt
         uses: actions-rs/cargo@v1
         with:
@@ -70,6 +83,20 @@ jobs:
     - uses: actions/checkout@v3
       with:
         submodules: recursive
+
+    - 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-
+
     - name: Run tests
       uses: actions-rs/cargo@v1
       with: