debug github ci

.github/workflows/main.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       matrix:
         os: [macos-latest, ubuntu-latest, windows-latest]
-        python: [3.8]
+        python: [3.10]
 
     steps:
       - uses: actions/checkout@v2
@@ -21,6 +21,8 @@ jobs:
         uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python }}
+      - name: Setup tmate session
+        uses: mxschmitt/action-tmate@v3
       - name: Install dependencies
         run: |
           pip install -q --upgrade pip