找不到指定的过程.(操作系统错误127)-#！[插件(rocket_codegen)]

Question

我是Rust编程的新手，正在构建Rust+Diesel+Rocket框架。

当我运行命令cargo check或cargo run时，会发生以下错误：

The specified procedure could not be found. (os error 127)
--> srcmain.rs:2:11
|
2 | #![plugin(rocket_codegen)]

操作系统：Windows 10

cargo.toml

[package]
name = "rest_in_rust"
version = "0.1.0"
authors = ["venka"]
[dependencies]
diesel = { version = "1.0.0", features = ["postgres"]}
dotenv = "0.9.0"
r2d2 = "0.8.3"
serde = "1.0.80"
serde_derive = "1.0.80"
serde_json = "1.0.33"
rocket = {  git = "https://github.com/SergioBenitez/Rocket" }
rocket_codegen = {  git = "https://github.com/SergioBenitez/Rocket" }
rocket_contrib = {  git = "https://github.com/SergioBenitez/Rocket", default-features = false, features = ["json"] }

Rust版本：rustc 1.32.0-nightly(0c999ed13 2018-12-03(

main.rs文件(第二行抛出这个错误(有线索吗？

#![feature(plugin, custom_derive, const_fn, decl_macro)]
#![plugin(rocket_codegen)]
#[macro_use]
extern crate diesel;
extern crate dotenv;
extern crate r2d2;
extern crate rocket;
extern crate rocket_contrib;
#[macro_use]
extern crate serde_derive;
#[macro_use]
extern crate serde_json;
use dotenv::dotenv;
use std::env;
use diesel::prelude::*;
use diesel::pg::PgConnection;
mod schema;
mod models;
mod db;
mod static_file;

Answer 1

我的货物。toml有

rocket = { git = "https://github.com/SergioBenitez/Rocket" }
rocket_codegen = { git = "https://github.com/SergioBenitez/Rocket" }

它将推出最新版本。对我来说，火箭0.4.0。由于Rocket 0.4，Rocket_codegen不应该是直接依赖项。

只需将其移除：

货物.toml

[dependencies]
rocket = "0.4"

main.rs

#![feature(proc_macro_hygiene, decl_macro)]
#[macro_use] extern crate rocket;

请查看火箭文档新闻部分的更改日志。