Use log crate for logging instead of println

src/auth.rs

@@ -2,6 +2,7 @@ use actix_web::web::{HttpResponse, Json};
 use actix_web::{post, Responder};
 use chrono::{Duration, Utc};
 use jsonwebtoken::{encode, EncodingKey, Header};
+use log::debug;
 
 use crate::data::LoginRequest;
 use crate::data::{secret_key, Claims, CreateAccountRequest, Token};
@@ -24,7 +25,7 @@ async fn register(user: Json<CreateAccountRequest>) -> impl Responder {
 
 #[post("/login")]
 async fn login(creds: Json<LoginRequest>) -> impl Responder {
-    println!("Logging in: {}", creds.username);
+    debug!("Logging in: {}", creds.username);
     if let Some(user) = get_user(&creds.username, &creds.password) {
         let claims = Claims {
             sub: user.id.to_string(),