Merge coverages generated under v1 and v2

.github/workflows/rust.yml

@@ -66,6 +66,6 @@ jobs:
       - name: "Install cargo-llvm-cov"
         uses: taiki-e/install-action@cargo-llvm-cov
       - name: "Generate code coverage for tests"
-        run: cargo llvm-cov --all-features --workspace --lcov --output-path lcov.info
+        run: bash contrib/coverage.sh
       - name: "Upload report to coveralls"
         uses: coverallsapp/github-action@v2

contrib/coverage.sh

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+set -e
+
+# https://github.com/taiki-e/cargo-llvm-cov?tab=readme-ov-file#merge-coverages-generated-under-different-test-conditions
+cargo llvm-cov clean --workspace # remove artifacts that may affect the coverage results
+cargo llvm-cov --no-report --features=send,receive
+cargo llvm-cov --no-report --features=v2,danger-local-https,io
+cargo llvm-cov report --lcov --output-path lcov.info # generate report without tests