Use nightly toochain

Author: Snehal-Reddy

.github/workflows/rust.yml

@@ -16,6 +16,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
+    - name: Install Rust nightly
+      uses: dtolnay/rust-toolchain@nightly
     - name: Build
       run: cargo build --verbose
     - name: Run tests