try nightly

Author: Bengt Lofgren

.github/workflows/solana.yml

@@ -75,7 +75,7 @@ jobs:
         run: npm i -g @coral-xyz/[email protected]
         shell: bash
       - name: Set default Rust toolchain
-        run: rustup default stable
+        run: rustup default nightly
         working-directory: ./solana
       - name: make check-idl
         run: make check-idl