Remove serde_derive https://github.com/serde-rs/serde/issues/1441#issuecomment-445481084

web-cors/backend/Cargo.toml

@@ -8,8 +8,7 @@ edition = "2018"
 actix-rt = "1.0.0"
 actix-web = "2.0.0"
 actix-cors = "0.2.0"
-serde = "1.0"
-serde_derive = "1.0"
+serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 dotenv = "0.10"
 env_logger = "0.6"

web-cors/backend/src/main.rs

@@ -1,6 +1,3 @@
-#[macro_use]
-extern crate serde_derive;
-
 use actix_cors::Cors;
 use actix_web::{http::header, middleware::Logger, web, App, HttpServer};
 

web-cors/backend/src/user.rs

@@ -1,4 +1,5 @@
 use actix_web::web;
+use serde::{Deserialize, Serialize};
 
 #[derive(Deserialize, Serialize, Debug)]
 pub struct Info {