Try overriding runner-installed toolchain

Author: charlesbluca

.github/workflows/test.yml

@@ -55,6 +55,11 @@ jobs:
             distributed: true
     steps:
       - uses: actions/checkout@v3
+      - name: Set up Rust toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+            toolchain: stable
+            override: true
       - name: Set up Python
         uses: conda-incubator/[email protected]
         with: