warnings--

src/buffers.rs

@@ -1,7 +1,7 @@
 use crate::geometry::*;
 use crate::render::{Surface, Shader, Surfaces};
 
-use std::fmt::{Debug, Formatter};
+use std::fmt::Debug;
 use std::rc::Rc;
 use std::cell::RefCell;
 use std::io;