当你在Rust项目中遇到“use of undeclared crate or module rand”这样的错误时,这通常意味着rand crate没有被正确地添加到你的项目依赖中,或者在代码中没有被正确地引用。以下是一些解决这个问题的步骤: 1. 检查Cargo.toml文件 首先,确保你的Cargo.toml文件中已经包含了rand crate作为依赖。如果还没有,你需要添加...
$cargo buildCompiling restaurant v0.1.0 (file:///projects/restaurant) error[E0433]: failed to resolve: use of undeclared crate or module `hosting`-->src/lib.rs:11:9| 11 | hosting::add_to_waitlist(); | ^^^ use of undeclared crate or module `hosting` warning: unused import: `crate...
and I have ended up with the following error: error[E0433]: failed to resolve: use of undeclared type or module `fail_ure` --> third_party/cargo/vendor/actix-http-1.0.1/src/error.rs:968:24 | 968 | impl ResponseError for fail_ure::Error {} | ^^^ use of undeclared type or modu...