fixup! ci(win test): deal better with hanging tests

Author: dscho

.github/workflows/main.yml

@@ -80,9 +80,9 @@ jobs:
       if: failure() && env.FAILED_TEST_ARTIFACTS != ''
       shell: bash
       run: ci/print-test-failures.sh
-    - name: Upload failed tests' directories
+    - name: Upload the t/ folder
       if: failure()
       uses: actions/upload-artifact@v3
       with:
-        name: t
+        name: t-${{ matrix.nr }}
         path: t