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所以我正在尝试使用 rust、rocket 和diesel 制作一个网络应用程序。代码编译得很好，但有一些未使用的衍生警告。但是在渲染模板时出现以下错误

GET /api/users:
    => Matched: GET /api/users (user_list_rt)
    => Error: Error rendering Tera template 'user/index'.
    => Error: Failed to render 'user/index': context isn't a JSON object. The value passed needs to be a key-value object: context, struct, hashmap for example.
    => Error: Template 'user/index' failed to render.
    => Outcome: Failure
    => Warning: Responding with 500 Internal Server Error catcher.
    => Response succeeded.

我的代码在柴油中发出一个简单的负载查询

#[get("/users")]
pub fn user_list_rt(connection: Conn) -> Template {
    use crate::schema::user::dsl::*;
    let user_coll = user.filter(name.is_not_null())
                    .load::<User>(&*connection)
                    .expect("Error loading users");
    
    Template::render("user/index", &user_coll)
}

用户结构

#[derive(Serialize, Queryable, Deserialize, Debug, Clone)]
pub struct User {
    pub id: i64,
    pub uuid: String,
    pub name: String,
    pub username: String,
    pub email: String,
    pub password: String,
    pub salt: String, 
    pub phone: i64,
    pub wallet: i64,
    pub game_id: String,
    pub verification: i8,
}

我知道我的 user_coll 是用户结构的向量。但是我无法弄清楚为什么缺少序列化导数来自动执行此操作，我缺少什么？

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