message: VMInstance cannot be Clone
diff: @@ -1023,7 +1023,7 @@ impl Instance {
  ///
  /// This is more or less a public facade of the private `Instance`,
  /// providing useful higher-level API.
  -#[derive(Debug, Clone, Eq, PartialEq)]
  +#[derive(Debug, Eq, PartialEq)]
  pub struct VMInstance {
  /// The layout of `Instance` (which can vary).
  instance_layout: Layout,
  