Move cache to before running build

Signed-off-by: trivernis <trivernis@protonmail.com>

.github/workflows/rust.yml

@@ -16,13 +16,13 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - name: Build
-      run: cargo build --verbose
     - name: Cache build data
       uses: actions/cache@v2
       with:
         path: |
           target/**/build
           target/**/deps
+    - name: Build
+      run: cargo build --verbose
     - name: Run tests
       run: cargo test --verbose