ci: fix tarpaulin code coverage

Author: sethdusek

.github/workflows/ci.yml

@@ -80,7 +80,25 @@ jobs:
         with:
           args: '--timeout=360 -v --out Lcov'
       - name: Push code coverage results to coveralls.io
-        if: matrix.os == 'ubuntu-latest' 
+        if: matrix.os == 'ubuntu-latest'
+        uses: coverallsapp/github-action@master
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          path-to-lcov: ./lcov.info
+
+  test_coverage:
+    name: Code coverage in tests
+    runs-on: ubuntu-latest
+    container:
+      image: xd009642/tarpaulin:latest
+      options: --security-opt seccomp=unconfined
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+      - name: Generate code coverage
+        run: |
+          cargo tarpaulin --avoid-cfg-tarpaulin --timeout=360 --out lcov
+      - name: Push code coverage results to coveralls.io
         uses: coverallsapp/github-action@master
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
@@ -115,7 +133,7 @@ jobs:
         with:
           command: test
           args: --verbose --release --all-features
-        
+
   doc-links:
     name: Intra-documentation links
     runs-on: ubuntu-latest