verbose test output on actions rerun (#462)

.github/workflows/ci.yml

@@ -52,6 +52,12 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v3
 
+      - name: Enable debug verbosity
+        if: runner.debug == '1'
+        run: |
+          echo "V=1" >> $GITHUB_ENV
+          echo "UNITTEST2_OUTPUT_LVL=VERBOSE" >> $GITHUB_ENV
+
       - name: Install build dependencies (Linux i386)
         if: runner.os == 'Linux' && matrix.target.cpu == 'i386'
         run: |