错误：无效的外部位置不存在：C：\ Rust 项目\ imap_project \ target \ debug \ deps \ libvoid-9f5065312e4dff17.rlib
错误[E0463]：找不到
void的板条箱-> C：\ Users \ Arndroid.cargo \ registry \ src \ github.com-1ecc6299db9ec823 \ unreachable-1.0.0 \ src \ lib.rs：12：1| 12 |板条箱无效；
| ^^^^^^^^^^^^^^^^^^^^找不到板条箱
不过，我可以用github.com-1ecc6299db9ec823\unreachable-1.0.0构建cargo build。
我有点不知所措。 我正在尝试添加此板条箱：
此刻，我使[dependencies]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"
我也只用imap = 0.8.1尝试过，但这没用。但是我不想排除这种可能性。
编辑：
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!");
}
实际上我目前拥有的所有货物均已初始化项目：
cargo new imap_project --bin
lib.rs文件夹中.cargo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;
(...)
我暂时无法提供更多服务，如果可以的话，请告诉我。
编辑2：
[[package]]
name = "aho-corasick"
version = "0.6.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"memchr 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "bitflags"
version = "0.9.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "bitflags"
version = "1.0.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "bufstream"
version = "0.1.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "cc"
version = "1.0.18"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "click_mail"
version = "0.1.0"
dependencies = [
"imap 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "core-foundation"
version = "0.2.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"core-foundation-sys 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "core-foundation-sys"
version = "0.2.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "foreign-types"
version = "0.3.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"foreign-types-shared 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "foreign-types-shared"
version = "0.1.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "fuchsia-zircon"
version = "0.3.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
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"fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "fuchsia-zircon-sys"
version = "0.3.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "imap"
version = "0.8.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
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"regex 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "imap-proto"
version = "0.4.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"nom 3.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
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[[package]]
name = "lazy_static"
version = "0.2.11"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "lazy_static"
version = "1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
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]
[[package]]
name = "libc"
version = "0.2.43"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "memchr"
version = "1.0.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
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[[package]]
name = "memchr"
version = "2.0.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "native-tls"
version = "0.1.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
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[[package]]
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