message: clippy: fix mut_from_ref warnings
diff: @@ -19,6 +19,7 @@ pub struct Heap {
  inner: UnsafeCell<InnerHeap>,
  }
  +#[cfg_attr(feature = "cargo-clippy", allow(mut_from_ref))]
  impl Heap {
  /// Creates a new heap with a given capacity
  pub fn with_capacity(num_bytes: usize) -> Heap {
  