Revert back to non rust action

.forgejo/workflows/main.yml

@@ -10,5 +10,11 @@ jobs:
     runs-on: ubuntu-latest # Or other appropriate runner
     steps:
       - uses: actions/checkout@v4 # Checkout the repository
-      - uses: dtolnay/rust-toolchain@stable
-      - run: cargo test --all-features
+      - name: Install Rust toolchain
+        run: |
+          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+          source $HOME/.cargo/env
+      - name: Run cargo build
+        run: |
+          source $HOME/.cargo/env
+          /home/ubuntu/.cargo/bin/cargo build