Rust service

README.md

@@ -105,9 +105,17 @@ go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@v1.2
 
 ### Rust services
 
+Update `rustc`
+
+```sh
+rustup update
+```
+
 #### [Tonic](https://github.com/hyperium/tonic)
 
 Tonic is a gRPC over HTTP/2 implementation focused on high performance, interoperability, and flexibility. This library was created to have first class support of async/await and to act as a core building block for production systems written in Rust.
 
+[Hello world tutorial](https://github.com/hyperium/tonic/blob/master/examples/helloworld-tutorial.md)
+
 
 [Rust and gRPC: A complete guide](https://blog.logrocket.com/rust-and-grpc-a-complete-guide/)