Adhere to Clippy provided suggestions

Implement a couple of suggestions made by Clippy in newer versions of
Rust.

src/cap.rs

@@ -1,4 +1,4 @@
-// Copyright (C) 2022 Daniel Mueller ([email protected])
+// Copyright (C) 2022-2025 Daniel Mueller ([email protected])
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 //! A module providing the means for protecting the contents of a
@@ -302,7 +302,7 @@ pub struct FileCap<'cap> {
   _phantom: PhantomData<&'cap ()>,
 }
 
-impl<'cap> FileCap<'cap> {
+impl FileCap<'_> {
   /// Create a new [`FileCap`] for the provided path.
   fn new(path: PathBuf) -> Self {
     Self {

src/db.rs

@@ -1,4 +1,4 @@
-// Copyright (C) 2022-2024 Daniel Mueller ([email protected])
+// Copyright (C) 2022-2025 Daniel Mueller ([email protected])
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 use std::cell::Cell;
@@ -806,7 +806,7 @@ pub mod tests {
 
       for item in items.iter() {
         assert!(db
-          .try_insert(black_box(0), black_box(item.clone()))
+          .try_insert(black_box(0), black_box(Rc::clone(item)))
           .is_some());
       }
     });
@@ -837,7 +837,7 @@ pub mod tests {
       let () = db.data.reserve(ITEM_CNT);
 
       for item in items.iter() {
-        assert!(db.try_push(black_box(Rc::clone(&item))).is_some());
+        assert!(db.try_push(black_box(Rc::clone(item))).is_some());
       }
     });
   }

src/view.rs

@@ -1,4 +1,4 @@
-// Copyright (C) 2017-2024 Daniel Mueller ([email protected])
+// Copyright (C) 2017-2025 Daniel Mueller ([email protected])
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 use std::rc::Rc;
@@ -123,7 +123,7 @@ impl<'tasks> Iterator for Filter<'tasks> {
   }
 }
 
-impl<'tasks> DoubleEndedIterator for Filter<'tasks> {
+impl DoubleEndedIterator for Filter<'_> {
   fn next_back(&mut self) -> Option<Self::Item> {
     loop {
       match self.iter.next_back() {