ci: add retry mechanism for coverage reporting via Coveralls CLI

.github/workflows/coverage.yaml

@@ -42,14 +42,39 @@ jobs:
 
       - uses: taiki-e/install-action@cargo-llvm-cov
       - uses: taiki-e/install-action@nextest
+      - uses: taiki-e/install-action@just
 
       - name: Generate coverage report
         run: |
-          cargo llvm-cov --no-fail-fast --lcov --output-path lcov.info nextest
+          just coverage
+
+      - name: Download Coveralls CLI
+        run: |
+          # use GitHub Releases URL instead of coveralls.io because they can't maintain their own files; it 404s
+          curl -L https://github.com/coverallsapp/coverage-reporter/releases/download/v0.6.15/coveralls-linux-x86_64.tar.gz | tar -xz -C /usr/local/bin
 
       - name: Upload coverage to Coveralls
-        uses: coverallsapp/github-action@v2
-        with:
-          files: ./lcov.info
-          format: lcov
-          allow-empty: false
+        env:
+          COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}
+        run: |
+          if [ ! -f "lcov.info" ]; then
+            echo "Error: lcov.info file not found. Coverage generation may have failed."
+            exit 1
+          fi
+
+          for i in {1..10}; do
+            echo "Attempt $i: Uploading coverage to Coveralls..."
+            if coveralls -n report lcov.info; then
+              echo "Successfully uploaded coverage report."
+              exit 0
+            fi
+
+            if [ $i -lt 10 ]; then
+              delay=$((2**i))
+              echo "Attempt $i failed. Retrying in $delay seconds..."
+              sleep $delay
+            fi
+          done
+
+          echo "Failed to upload coverage report after 10 attempts."
+          exit 1

Justfile

@@ -3,14 +3,16 @@ set windows-shell := ["powershell.exe", "-NoLogo", "-Command"]
 
 coverage_exclude_pattern := "app.rs|audio.rs"
 
+# Display report (for humans)
+report-coverage: coverage
+    cargo llvm-cov report \
+    --ignore-filename-regex "{{ coverage_exclude_pattern }}"
+
+# Run & generate report (for CI)
 coverage:
-    # Run & generate report
     cargo llvm-cov \
+    --lcov \
     --ignore-filename-regex "{{ coverage_exclude_pattern }}" \
     --output-path lcov.info \
     --profile coverage \
     --no-fail-fast nextest
-
-    # Display report
-    cargo llvm-cov report \
-    --ignore-filename-regex "{{ coverage_exclude_pattern }}"

bacon.toml

@@ -36,7 +36,7 @@ analyzer = "nextest"
 
 [jobs.coverage]
 command = [
-    "just", "coverage"
+    "just", "report-coverage"
 ]
 need_stdout = true
 ignored_lines = [