message: use Box::leak and clean up our string leak
diff: @@ -3,23 +3,14 @@ use serde::{Serialize, Serializer};
  use std::fmt;
  use std::sync::RwLock;
  use std::collections::HashSet;
  -use std::slice;
  use std::str;
  -use std::mem;
  use std::ptr;
  use std::cmp::Ordering;
  use std::ops::Deref;
  use std::hash::{Hash, Hasher};
  pub fn leak(s: String) -> &'static str {
  - let boxed = s.into_boxed_str();
  - let ptr = boxed.as_ptr();
  - let len = boxed.len();
  - mem::forget(boxed);
  - unsafe {
  - let slice = slice::from_raw_parts(ptr, len);
  - str::from_utf8_unchecked(slice)
  - }
  + Box::leak(s.into_boxed_str())
  }
  lazy_static! {
  