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Why are recursive struct types illegal in Rust?（3个答案）
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我是Rust的新手，这是我第一次写这样的代码：
PLAYGROUND HERE

# [tokio::main]

async fn main() {
    #[derive(Default, Clone)]
    pub struct Coach {
        id: Option<i64>,
        name: String,
        team: Option<Team>
    }

    #[derive(Default, Clone)]
    pub struct Team {
        id: Option<i64>,
        name: String,
        coach: Option<Coach>
    }
}

错误为：

error[E0072]: recursive type `Coach` has infinite size
 --> src/main.rs:4:5
  |
4 |     pub struct Coach {
  |     ^^^^^^^^^^^^^^^^ recursive type has infinite size
...
7 |         team: Option<Team>
  |               ------------ recursive without indirection
  |
help: insert some indirection (e.g., a `Box`, `Rc`, or `&`) to make `Coach` representable
  |
7 |         team: Option<Box<Team>>
  |                      ++++    +

error[E0072]: recursive type `Team` has infinite size
  --> src/main.rs:11:5
   |
11 |     pub struct Team {
   |     ^^^^^^^^^^^^^^^ recursive type has infinite size
...
14 |         coach: Option<Coach>
   |                ------------- recursive without indirection
   |
help: insert some indirection (e.g., a `Box`, `Rc`, or `&`) to make `Team` representable
   |
14 |         coach: Option<Box<Coach>>
   |                       ++++     +

For more information about this error, try `rustc --explain E0072`.

在Go语言中，这样的代码很容易实现，那么Rust的惯用代码是什么？