英文:
How to fix use of unstable library feature 'test': `bench` is a part of custom test frameworks which are unstable
问题
在尝试使用 cargo[benchmark][1] 功能时，它会抛出错误：
错误：使用不稳定的库特性 'test'：`bench` 是自定义测试框架的一部分，目前不稳定
|
| #[bench]
| ^^^^^
|
= 警告：编译器先前接受了这个，但正在逐步淘汰；在将来的版本中将变为严格错误！
= 注意：有关更多信息，请参见问题 #64266 <https://github.com/rust-lang/rust/issues/64266>
= 注意：默认情况下启用 `#[deny(soft_unstable)]`
英文:
While trying to use cargobenchmark feature, it throws error:
error: use of unstable library feature 'test': `bench` is a part of custom test frameworks which are unstable
|
| #[bench]
| ^^^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #64266 <https://github.com/rust-lang/rust/issues/64266>
= note: `#[deny(soft_unstable)]` on by default
答案1
得分: 2
以下是翻译好的部分：
修复此问题的步骤：
- 使用夜间版编译或将夜间版设置为默认：
使用夜间版编译：
cargo +nightly bench ...
将夜间版设置为默认：
rustup default nightly
- 添加测试特性
要做到这一点，在您的根文件顶部添加2行代码（即使在导入之前）：
#![feature(test)]
extern crate test;
use...
这将允许您使用#[bench]特性。
英文:
Steps to fix this issue:
- compile using nightly version or set nightly to default:
> To compile using nightly version:
cargo +nightly bench ...
>To set nightly as default:
rustup default nightly
- add test feature
To do this, add 2 lines to the top of your root file. (Even above imports)
#![feature(test)]
extern crate test;
use...
This will allow you to use the #[bench] feature.
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