Try failure collection from matrix jobs

.github/workflows/upgrade.yml

@@ -40,4 +40,26 @@ jobs:
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v3
       - name: Build and Test
+        id: build-and-test
         run:  ./gradlew build --parallel
+      - if: ${{ failure() }}
+        run: touch failure
+      - if: ${{ !cancelled() }}
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ matrix.os }}-${{ matrix.java-lts }}-failure
+          path: failure
+          if-no-files-found: ignore
+          retention-days: 1
+
+  process-failures:
+    if: ${{ !cancelled() }}
+    needs: [ build ]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          path: all-failures
+          pattern: '*-failure'
+          merge-multiple: true
+      - run: ls -laR