Use cargo-llvm-cov for coverage

Author: djc

Diff for: .github/workflows/main.yml

@@ -84,18 +84,21 @@ jobs:
 
   coverage:
     runs-on: ubuntu-latest
+    env:
+      CARGO_TERM_COLOR: always
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
           toolchain: stable
           override: true
-      - uses: actions-rs/tarpaulin@v0.1
-      - uses: codecov/codecov-action@v1.0.2
-        with:
-          token: ${{secrets.CODECOV_TOKEN}}
-      - uses: actions/upload-artifact@v1
+      - name: Install cargo-llvm-cov
+        uses: taiki-e/install-action@cargo-llvm-cov
+      - name: Generate code coverage
+        run: cargo llvm-cov --all-features --workspace --lcov --output-path lcov.info
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v3
         with:
-          name: code-coverage-report
-          path: cobertura.xml
+          files: lcov.info
+          fail_ci_if_error: true