CI: Fix the coverage yml.

.github/workflows/coverage.yml

@@ -8,9 +8,10 @@ env:
 
 jobs:
   code_coverage:
-  name: Code Coverage
-  runs-on: "ubuntu-latest"
-  steps:
+    name: Code Coverage
+    runs-on: "ubuntu-latest"
+
+    steps:
     - name: Checkout repository
       uses: actions/checkout@v2
 
@@ -18,6 +19,7 @@ jobs:
       uses: actions-rs/toolchain@v1
       with:
         toolchain: stable
+        profile: minimal
         override: true
 
     - name: Install tarpaulin