cleanup

src/nothing.rs

@@ -0,0 +1,11 @@
+
+pub auto trait NotNothing {}
+impl !NotNothing for Nothing {}
+impl <T> NotNothing for alloc::boxed::Box<T> {}
+
+#[derive(Debug)]
+pub struct Nothing;
+
+impl<T: NotNothing> From<T> for Nothing {
+    fn from(_: T) -> Self { Nothing }
+}