error[E0277]: the trait bound `std::cell::Cell<i64>: std::marker::Sync` is not satisfied 因为这个 bug 在最新的 nightly 版本上修复了,编译器正确地拒绝了这段代码编译通过。 原因分析 join 函数的签名是这样的: pub fn join<A, B, RA, RB>(oper_a: A, oper
以前,编译器会给出如下内置错误: error[E0277]: the trait bound `String: ImportantTrait<i32>` is not satisfied --> src/main.rs:12:18 | 12 | use_my_trait(String::new()); | --- ^^^ the trait `ImportantTrait<i32>` is not implemented for `String` | | | required by a bound intr...
以前,编译器会给出如下内置错误: error[E0277]:thetraitbound`String:ImportantTrait<i32>`isnotsatisfied -->src/main.rs:12:18 | 12|use_my_trait(String::new); |---^^^thetrait`ImportantTrait<i32>`isnotimplementedfor`String` || |requiredbyaboundintroducedbythiscall Assertingunsafepreconditions - ...
rust 未预期的“找不到方法”编译器错误itertools::Itertools::cartesian_product返回itertools::Product类型...
error[E0277]: the trait bound `Shape<D2>: From<impl Into<Shape<D2>>>` is not satisfied --> crates/afterburner-core/src/lib.rs:58:61 | 58 | fn conv(&self, weights: &Tensor<B, D2, T>, stride: impl Into<Shape<D2>>) -> Tensor<B, D, T> { | ^^^ the trait `From<im...
note: no errors encountered even though delayed bugs were created note: those delayed bugs will now be shown as internal compiler errors error: internal compiler error[E0277]: the trait bound `str: const Deref` is not satisfied --> /tmp/icemaker_global_tempdir.anmGc5oi45fj/rustc_testrunner...
error[E0277]: the trait bound `&mut i32: Trait` is not satisfied --> src/main.rs:9:9 | 3 | fn foo<X: Trait>(t: X) {} | --- required by this bound in `foo` ... 9 | foo(t); | ^ the trait `Trait` is not implemented for `&mut i32` | = help: the following impl...
error[E0277]: the trait bound `HackEndpointSet: EndpointStateSealed` is not satisfied --> src/main.rs:71:28 | 71 | impl EndpointState for HackEndpointSet {} | ^^^ the trait `EndpointStateSealed` is not implemented for `HackEndpointSet` | = help: the following other types implement...
如果尝试在未实现 A能力 或 C 能力的情况下实现 B能力,编译器会直接报错,而不是在运行时崩溃。例如,若删除 impl A for MyStruct,编译器会提示:the trait bound MyStruct: A is not satisfied。 看完基础的后我们再来理解下trait能力到底做了什么
().unwrap(); //println!("{:#?}", u); // error[E0277]: the trait bound `User: std::str::FromStr` is not satisfied // --> src/main.rs:24:21 // | // 24 | let u: User = j.parse().unwrap(); // | ^^^ the trait `std::str::FromStr` is not implemented for `Use...