Fix clippy warnings

Author: Amanieu

src/map.rs

@@ -18,7 +18,7 @@ pub enum DefaultHashBuilder {}
 
 /// A hash map implemented with quadratic probing and SIMD lookup.
 ///
-/// The default hashing algorithm is currently [AHash], though this is
+/// The default hashing algorithm is currently [`AHash`], though this is
 /// subject to change at any point in the future. This hash function is very
 /// fast for all types of keys, but this algorithm will typically *not* protect
 /// against attacks such as HashDoS.
@@ -145,7 +145,7 @@ pub enum DefaultHashBuilder {}
 /// [`with_hasher`]: #method.with_hasher
 /// [`with_capacity_and_hasher`]: #method.with_capacity_and_hasher
 /// [`fnv`]: https://crates.io/crates/fnv
-/// [AHash]: https://crates.io/crates/ahash
+/// [`AHash`]: https://crates.io/crates/ahash
 ///
 /// ```
 /// use hashbrown::HashMap;

src/raw/mod.rs

@@ -73,18 +73,20 @@ impl Fallibility {
     /// Error to return on capacity overflow.
     #[inline]
     fn capacity_overflow(self) -> CollectionAllocErr {
+        use Fallibility::*;
         match self {
-            Fallibility::Fallible => CollectionAllocErr::CapacityOverflow,
-            Fallibility::Infallible => panic!("Hash table capacity overflow"),
+            Fallible => CollectionAllocErr::CapacityOverflow,
+            Infallible => panic!("Hash table capacity overflow"),
         }
     }
 
     /// Error to return on allocation error.
     #[inline]
     fn alloc_err(self, layout: Layout) -> CollectionAllocErr {
+        use Fallibility::*;
         match self {
-            Fallibility::Fallible => CollectionAllocErr::AllocErr { layout },
-            Fallibility::Infallible => handle_alloc_error(layout),
+            Fallible => CollectionAllocErr::AllocErr { layout },
+            Infallible => handle_alloc_error(layout),
         }
     }
 }