错误：void的extern位置不存在：C：\ Rust Projects \ imap_project \ target \ debug \ deps \ libvoid-9f5065312e4dff17.rlib错误[E0463]：无法找到crate for void - > C：\ Users \ Arndroid.cargo \ registry \ src \ github.com-1ecc6299db9ec823 \ unreachable-1.0.0 \ src \ lib.rs：12：1 | 12 | extern crate void; | ^^^^^^^^^^^^^^^^^^找不到箱子
不过，我可以用 cargo build 构建 github.com-1ecc6299db9ec823\unreachable-1.0.0 就好了 .
我有点不知所措 . 我正在尝试添加这个箱子：
这时我把我的_1275256看起来像这样：
[dependencies]
void = "1.0.2"
buzz = "1.1.0"
bufstream = "0.1"
imap-proto = "0.4.1"
native-tls = "0.1"
nom = "3.2.1"
regex = "0.2"
unreachable = "1.0.0"
imap = "0.8.1"
我也尝试了它只是 imap = 0.8.1 ，但那并没有想要排除这种可能性 .
Edit:
根据建议的最小代码：
Cargo.toml ：
[package]
name = "imap_project"
version = "0.1.0"
authors = ["Name & Email"]
[dependencies]
imap = "0.8.1"
main.rs ：
extern crate imap;
fn main() {
println!("Hello, world!");
}
实际上，我现在所有的新货物初始化项目：
cargo new imap_project --bin
.cargo 文件夹中 lib.rs 的前14行：
#![cfg_attr(test, deny(warnings))]
#![deny(missing_docs)]
//! # unreachable
//!
//! An unreachable code optimization hint in stable rust, and some useful
//! extension traits for `Option` and `Result`.
//!
#![no_std]
extern crate void;
use core::mem;
(...)
我想不出在这个时候提供更多，如果可以，请告诉我 .
Edit 2:
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