使用splines=polyline的{{1}}宏，我得到以下警告：
clap我如何使其静音？我尝试将arg_enum放在warning: use of deprecated item 'std::ascii::AsciiExt': use inherent methods instead
--> src/main.rs:37:1
|
37 | / arg_enum!{
38 | | #[derive(Debug)]
39 | | pub enum Operation {
40 | | Add,
... |
47 | | }
48 | | }
| |_^
|
= note: #[warn(deprecated)] on by default
= note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
之前和#[allow(deprecated)]之前，但是都没有任何效果。