Update to hashbrown 0.9

Author: kyren

CHANGELOG.md

@@ -1,5 +1,5 @@
 ## [0.6.0]
-- API incompatible change: depend on hashbrown 0.8, re-export renamed
+- API incompatible change: depend on hashbrown 0.9, re-export renamed
   hashbrown::TryReserveError type.
 - Adjust trait bounds for LinkedHashMap::retain, LinkedHashSet::default to be
   less strict (to match hashbrown)

Cargo.toml

@@ -17,7 +17,7 @@ circle-ci = { repository = "kyren/hashlink", branch = "master" }
 serde_impl = ["serde"]
 
 [dependencies]
-hashbrown = "0.8.0"
+hashbrown = "0.9.0"
 serde = { version = "1.0", optional = true }
 
 [dev-dependencies]

src/linked_hash_map.rs

@@ -1028,7 +1028,7 @@ impl<'a, K, V, S> RawEntryMut<'a, K, V, S> {
 pub struct RawOccupiedEntryMut<'a, K, V> {
     free: &'a mut Option<NonNull<Node<K, V>>>,
     values: &'a mut Option<NonNull<Node<K, V>>>,
-    entry: hash_map::RawOccupiedEntryMut<'a, NonNull<Node<K, V>>, ()>,
+    entry: hash_map::RawOccupiedEntryMut<'a, NonNull<Node<K, V>>, (), NullHasher>,
 }
 
 impl<'a, K, V> RawOccupiedEntryMut<'a, K, V> {