Fixed build issues

src/models/user.rs

@@ -1,10 +1,9 @@
-use serde::{Deserialize, Serialize};
+// mod models {
+    use serde::{Deserialize, Serialize};
 
-mod models {
-
-#[derive(Debug, Deserialize, Serialize)]
-pub struct User {
-    pub username: String,
-    pub password: String,
-}
-}
+    #[derive(Debug, Deserialize, Serialize)]
+    pub struct User {
+        pub username: String,
+        pub password: String,
+    }
+// }