rss crate 已安装,但找不到函数 Channel::from_url

rss crate is installed, but cannot find the function Channel::from_url

我尝试在一个项目中使用 RSS crate。我将 rss = "1.5.0" 添加到 Cargo.toml 中的依赖项并构建了我的代码:

extern crate regex;
extern crate rss;

use rss::Channel;

fn main() {
    let channel = Channel::from_url("https://feedpress.me/usererror.xml");
}

当我 运行 cargo build 时,出现以下错误:

$ cargo build
   Compiling rss_f v0.1.0 (file:///home/philippe/test/rss_f)
error[E0599]: no function or associated item named `from_url` found for type `rss::Channel` in the current scope
 --> src/main.rs:7:19
  |
7 |     let channel = Channel::from_url("https://feedpress.me/usererror.xml");
  |                   ^^^^^^^^^^^^^^^^^ function or associated item not found in `rss::Channel`

当我突出显示 VScode 中的函数时,RLS 出现错误,同时 Racer 给出了函数的定义。所以箱子已经安装了,但是 Cargo 不能使用它。

如果你重读 the documentation,强调我的:

From a URL

A channel can also be read from a URL.

Note: This requires enabling the from_url feature.

use rss::Channel;

let channel = Channel::from_url("http://example.com/feed.xml").unwrap();

因此,您需要在 Cargo.toml:

中启用该功能
rss = { version = "1.5.0", features = ["from_url"] }