chore: add rust-toolchain file (#5129)

.github/actions/build-rust/action.yml

@@ -14,10 +14,17 @@ inputs:
 runs:
   using: 'composite'
   steps:
+    - name: Print rustup toolchain version
+      shell: bash
+      id: rustup-version
+      run: |
+        export RUST_TOOLCHAIN_VERSION="$(grep 'channel' rust-toolchain.toml | head -1 | awk -F '"' '{print $2}')"
+        echo "Rust toolchain version: $RUST_TOOLCHAIN_VERSION"
+        echo "RUST_TOOLCHAIN_VERSION=$RUST_TOOLCHAIN_VERSION" >> "$GITHUB_OUTPUT"
     - name: Setup Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: stable
+        toolchain: '${{ steps.rustup-version.outputs.RUST_TOOLCHAIN_VERSION }}'
         targets: ${{ inputs.target }}
       env:
         CARGO_INCREMENTAL: '1'
@@ -49,6 +56,8 @@ runs:
         run: |
           export CC=x86_64-unknown-linux-gnu-gcc
           export CC_x86_64_unknown_linux_gnu=x86_64-unknown-linux-gnu-gcc
+          rm -rf /usr/local/rustup/downloads/*
+          rustup target add x86_64-unknown-linux-gnu
           export RUSTFLAGS="-C debuginfo=1"
           yarn workspace ${{ inputs.package }} nx build ${{ inputs.package }} --target ${{ inputs.target }}
           if [ -d "node_modules/.cache" ]; then
@@ -66,6 +75,8 @@ runs:
         options: --user 0:0 -v ${{ github.workspace }}/.cargo-cache/git/db:/usr/local/cargo/git/db -v ${{ github.workspace }}/.cargo/registry/cache:/usr/local/cargo/registry/cache -v ${{ github.workspace }}/.cargo/registry/index:/usr/local/cargo/registry/index -v ${{ github.workspace }}:/build -w /build -e NX_CLOUD_ACCESS_TOKEN=${{ inputs.nx_token }}
         run: |
           export RUSTFLAGS="-C debuginfo=1"
+          rm -rf /usr/local/rustup/downloads/*
+          rustup target add aarch64-unknown-linux-gnu
           yarn workspace ${{ inputs.package }} nx build ${{ inputs.package }} --target ${{ inputs.target }}
           if [ -d "node_modules/.cache" ]; then
             chmod -R 777 node_modules/.cache