update README&scheduling for rustlings github classroom

README.md

@@ -6,7 +6,11 @@ Welcome to Open-Source OS Training Comp 2022（2022年开源操作系统训练
 ## History
 - [open-source  os training comp 2021](https://github.com/rcore-os/rCore/wiki/os-tutorial-summer-of-code-2021)
 - [open-source  os training  comp 2020](https://github.com/rcore-os/rCore/wiki/os-tutorial-summer-of-code-2020)
-## Guide
+
+## Guide & Lab Test for Rust
+- [learning rsut guide](https://course.rs/)（Rust语言圣经）
+- [Rust-lang Lab Test based on Rustlings](https://classroom.github.com/a/YTNg1dEH)（采用Github Classroom模式的Rustling小练习）
+## Guide for OS
 - Guide deployed version can be found [here](https://learningos.github.io/rust-based-os-comp2022/)（精简OS实验指导）
 - [rCore Tutorial v3 Guide](https://rcore-os.github.io/rCore-Tutorial-Book-v3/) (2022春季OS课程讲义)
 - [OS Course Slides in 2022 spring](https://learningos.github.io/os-lectures/)(2022春季OS课程Slides)

scheduling.md

@@ -48,8 +48,9 @@
 
 2. 自学编程
 
-   - [Small exercises to get you used to reading and writing Rust code!](https://github.com/rust-lang/rustlings)
-     - 要求：小练习全部通过。代码和README提交在自己在github的公开repo上。
+   - [Rust-lang Lab Test based on Rustlings](https://classroom.github.com/a/YTNg1dEH)（采用Github Classroom模式的Rustling小练习，点击上述链接，形成自己的练习用repo） 
+     - 要求：**必须完成** 。每完成几个小练习，就执行 ``git push`` 命令，提交到小GithubClassroom的CI进行自动评测。要求小练习全部通过GithubClassroom的CI自动评测。
+
    - [32 Rust Quizes](https://dtolnay.github.io/rust-quiz/1)
      - 要求：小练习全部通过。
    - [exercisms.io 快速练习(88+道题目的中文详细描述)](http://llever.com/exercism-rust-zh/index.html)