Fix clippy lint 2023/10/07 (#495)

Fix the most recent batch of clippy lints

- [x] no changelog update needed

Author: gwilymk

agb-hashmap/src/lib.rs

@@ -31,7 +31,7 @@ use core::{
     alloc::Allocator,
     borrow::Borrow,
     fmt::Debug,
-    hash::{BuildHasher, BuildHasherDefault, Hash, Hasher},
+    hash::{BuildHasher, BuildHasherDefault, Hash},
     iter::FromIterator,
     num::Wrapping,
     ops::Index,
@@ -470,9 +470,7 @@ where
         K: Borrow<Q>,
         Q: Hash + ?Sized,
     {
-        let mut hasher = self.hasher.build_hasher();
-        key.hash(&mut hasher);
-        let result = hasher.finish();
+        let result = self.hasher.hash_one(key);
 
         // we want to allow truncation here since we're reducing 64 bits to 32
         #[allow(clippy::cast_possible_truncation)]
@@ -949,7 +947,7 @@ impl core::ops::Add<i32> for HashType {
 
 #[cfg(test)]
 mod test {
-    use core::cell::RefCell;
+    use core::{cell::RefCell, hash::Hasher};
 
     use alloc::vec::Vec;
 

agb/src/interrupt.rs

@@ -350,20 +350,6 @@ impl VBlank {
     }
 }
 
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test_case]
-    fn test_interrupt_table_length(_gba: &mut crate::Gba) {
-        assert_eq!(
-            unsafe { INTERRUPT_TABLE.len() },
-            Interrupt::Gamepak as usize + 1,
-            "interrupt table should be able to store gamepak interrupt"
-        );
-    }
-}
-
 #[must_use]
 /// The behaviour of this function is undefined in the sense that it will output
 /// some information in some way that can be interpreted in a way to give some
@@ -384,3 +370,17 @@ pub fn profiler(timer: &mut crate::timer::Timer, period: u16) -> InterruptHandle
         })
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test_case]
+    fn test_interrupt_table_length(_gba: &mut crate::Gba) {
+        assert_eq!(
+            unsafe { INTERRUPT_TABLE.len() },
+            Interrupt::Gamepak as usize + 1,
+            "interrupt table should be able to store gamepak interrupt"
+        );
+    }
+}