Install current stable Rust in CI

dtolnay · dtolnay · commit 5f07f7e9959b · 2024-01-09T15:10:53.000-08:00
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
@@ -8,6 +8,8 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
+      - uses: dtolnay/rust-toolchain@stable
+
       - name: Formatting
         run: |
           # Install extra rustup components
