Conditional skip of code coverage

.github/workflows/build_and_test.yml

@@ -35,6 +35,13 @@ jobs:
         cache-all-crates: "true"
     - name: Build, Test and Publish Coverage
       run: |
+        if [ -n "${{ secrets.COVERALLS_REPO_TOKEN }}" ]; then
           curl -L --proto '=https' --tlsv1.2 -sSf https://raw.githubusercontent.com/cargo-bins/cargo-binstall/main/install-from-binstall-release.sh | bash
           cargo binstall --no-confirm cargo-tarpaulin --force
           cargo tarpaulin --all-features --avoid-cfg-tarpaulin --tests --verbose --skip-clean --coveralls ${{ secrets.COVERALLS_REPO_TOKEN }} --timeout 120
+        else
+          echo "Code Coverage step is skipped on forks!"
+          cargo build --verbose --all-features
+          cargo test --verbose --all-features
+        fi
+