Install rust on arm64 runner via a proper action

Author: xxuejie

.github/workflows/rust.yml

@@ -58,8 +58,7 @@ jobs:
     - uses: actions/checkout@v3
     - name: Install deps
       run: sudo apt update && sudo apt install -y clang build-essential
-    - name: Install rust
-      run: wget -O rustup.sh https://sh.rustup.rs && chmod +x rustup.sh && ./rustup.sh --target riscv64imac-unknown-none-elf -y && . "$HOME/.cargo/env"
+    - uses: actions-rust-lang/setup-rust-toolchain@v1
     - name: Install cargo generate
       run: cargo install cargo-generate
     - name: Generate workspace