ci: fix coverage evaluation

Author: henrybarreto

.github/workflows/linux.yml

@@ -26,7 +26,7 @@ jobs:
 
     steps:
       - name: Install Dependencies
-        run: sudo apt-get update; sudo apt-get install libarchive-dev protobuf-compiler socat
+        run: sudo apt-get update; sudo apt-get install libarchive-dev protobuf-compiler socat; rustup component add llvm-tools-preview
       - name: Checkout sources
         uses: actions/checkout@v2
       - name: Install ${{ matrix.version }}
@@ -119,20 +119,25 @@ jobs:
           args: --locked --all --all-features --no-fail-fast -- --nocapture
         env:
           CARGO_INCREMENTAL: '0'
-          RUSTFLAGS: '-Ccodegen-units=1 -Copt-level=0 -Clink-dead-code -Coverflow-checks=off -Zpanic_abort_tests -Cpanic=abort'
-      - id: coverage
+          RUSTFLAGS: '-Cinstrument-coverage'
+          LLVM_PROFILE_FILE: 'target/coverage/%p-%m.profraw'
+
+      - name: Generate coverage report
         if: matrix.name == 'nightly'
-        uses: actions-rs/grcov@master
+        run: |
+          grcov target/coverage/ --binary-path ./target/debug/ -s . -t lcov --branch --ignore-not-existing --ignore "/*" --ignore "tests/*" -o target/coverage/lcov.info
+
       - name: Coveralls upload
         if: matrix.name == 'nightly'
         uses: coverallsapp/github-action@master
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
-          path-to-lcov: ${{ steps.coverage.outputs.report }}
+          format: lcov
+          path-to-lcov: target/coverage/lcov.info
       - name: Clear the coverage files from cache
         if: matrix.name == 'nightly'
         run: |
-          find target/ -name "*.gcda" -exec rm {} +
+          find target/coverage/ -name "*.profraw" -exec rm {} +
 
       - name: Clear the cargo caches
         run: |