println!("{:?}",xx);xx带struct报错'Struct` doesn't implement `Debug` #[derive(Debug)] struct xx { } 类似报错 error[E0277]: `impl futures::Future<Output = Result<Vec<Value>, anyhow::Error>>` doesn't implement `Debug`
It seem that named functions have to be coerced to anonymous ones in order to implement Debug. This means any structs containing functions don't derive Debug, which makes unit testing tricky.Activity durka commented on Feb 10, 2016 durka on Feb 10, 2016 Contributor I guess it would have ...
error[E0277]: `UserModel` doesn't implement `Debug` --> src\main.rs:13:22 | 13 | println!("{:?}", user1); | ^^^ `UserModel` cannot be formatted using `{:?}` | = help: the trait `Debug` is not implemented for `UserModel` = note: add `#[derive(Debug)]` or manually im...
cargo run 报错：syn::Type cannot be formatted using {:?} because it doesn't implement Debug 尝试解决 清除cargo缓存，尝试能否解决：cargo clean 再次运行，还是报错。对于一些新建的rust项目清除缓存能解决一些报错问题，不过这次并没有解决。更换rust版本 更换rust版本，报错依旧，并没有解决。发现问题 查看项...
IDEA shows error hint: Request<HelloRequest> doesn't implement Debug (required by {:?}). However, the struct tonic::Request and HelloRequest (generated by code) has implemented trait Debug. // ::prost::Message pub trait Message: Debug + Send + Sync {...} And these codes can pass ...
error[E0277]: `Student` doesn't implement `Debug` --> E:\.rs\struct2.rs:31:22 | 31 | println!("{:?}", s); | ^ `Student` cannot be formatted using `{:?}` | = help: the trait `Debug` is not implemented for `Student` ...
$ cargo run Compiling traits-example v0.1.0(file:///projects/traits-example)error[E0277]: `Point` doesn't implement `std::fmt::Display` --> src/main.rs:20:6 |3 | trait OutlinePrint: fmt::Display { | --- required by this bound in `OutlinePrint`...20 | impl OutlinePrint for...
("{}",vec![1,2]);---输出---error[E0277]:`std::vec::Vec<{integer}>`doesn't implement`std::fmt::Display`-->src/main.rs:13:20|13|println!("{}",vec![1,2]);|^^^`std::vec::Vec<{integer}>`cannot be formattedwiththedefaultformatter|=help:the trait`std::fmt::Display`is n...
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lucas/experiments/helpful-id-debug lucas/experiments/measure-widget-size patch-0.31.1 lucas/open-multiple-popups emilk/fix-rect-edges emilk/eframe-0.30.1 emilk/only-hover-one-interactive-widget lucas/wip_harness_run_with_eframe wgpu-23