Use log crate for logging instead of println

src/data/mod.rs

@@ -1,5 +1,7 @@
 use std::str::FromStr;
 
+use log::error;
+
 use actix_web::error::ErrorUnauthorized;
 use actix_web::{dev, http::header, Error, FromRequest, HttpRequest};
 use futures::future::{err, ok, Ready};
@@ -21,7 +23,6 @@ pub fn secret_key() -> String {
     if cfg!(test) {
         String::from("test_key")
     } else {
-        println!("USING REAL KEY");
         dotenv::var("SECRET_KEY").expect("SECRET_KEY env not set!")
     }
 }
@@ -39,7 +40,7 @@ impl FromStr for Claims {
         ) {
             Ok(data) => Ok(data.claims),
             Err(other) => {
-                println!("DecodeError: {}", other);
+                error!("DecodeError: {}", other);
                 Err(other)
             }
         }