run tests and watch exit status

Author: connorhu

.github/workflows/continuous-integration.yml

@@ -63,4 +63,14 @@ jobs:
         run: php data/bin/check_configuration.php
 
       - name: Run Tests
-        run: php data/bin/symfony symfony:test --trace
+        run: |
+          exit_status=0
+          php data/bin/symfony symfony:test --trace || exit_status=$?
+
+          if [ "${{ matrix.mode }}" = experimental ]
+          then
+            echo "exited: $exit_status"
+            exit 0
+          else
+            exit $exit_status
+          fi