rust - reqwest::client 没有 get 方法

Question

根据此示例，我应该能够get在使用客户端构建器实例化的客户端上运行：

use reqwest::header;
let mut headers = header::Headers::new();
headers.set(header::Authorization("secret".to_string()));

// get a client builder
let client = reqwest::Client::builder()
    .default_headers(headers)
    .build()?;
let res = client.get("https://www.rust-lang.org").send()?;

下面是我写的代码。

let client = Client::builder()
        .gzip(true)
        .timeout(Duration::from_secs(10))
        .build();
let resp = client.get("https://wiki.mozilla.org/images/f/ff/Example.json.gz");

这是我得到的错误：

error[E0599]: no method named `get` found for type `std::result::Result<reqwest::Client, reqwest::Error>` in the current scope
  --> examples/gzipped_http_files.rs:86:23
   |
86 |     let resp = client.get("https://wiki.mozilla.org/images/f/ff/Example.json.gz");

我究竟做错了什么？