diff --git a/taskchampion/lib/src/string.rs b/taskchampion/lib/src/string.rs
index 36db8a4ac..44e00dcc8 100644
--- a/taskchampion/lib/src/string.rs
+++ b/taskchampion/lib/src/string.rs
@@ -317,7 +317,7 @@ impl<'a> From<String> for RustString<'a> {
     }
 }
 
-impl<'a> From<&str> for RustString<'static> {
+impl From<&str> for RustString<'static> {
     fn from(string: &str) -> RustString<'static> {
         RustString::String(string.to_string())
     }
diff --git a/taskchampion/lib/src/traits.rs b/taskchampion/lib/src/traits.rs
index ee698b777..c9040071d 100644
--- a/taskchampion/lib/src/traits.rs
+++ b/taskchampion/lib/src/traits.rs
@@ -276,13 +276,11 @@ where
     let mut vec = unsafe { CL::take_val_from_arg(list, CL::null_value()) };
 
     // first, drop each of the elements in turn
-    for e in vec.drain(..) {
-        if let Some(e) = e {
-            // SAFETY:
-            //  - e is a valid Element (promised by caller)
-            //  - e is owned
-            drop(unsafe { PassByPointer::take_from_ptr_arg(e.as_ptr()) });
-        }
+    for e in vec.drain(..).flatten() {
+        // SAFETY:
+        //  - e is a valid Element (promised by caller)
+        //  - e is owned
+        drop(unsafe { PassByPointer::take_from_ptr_arg(e.as_ptr()) });
     }
     // then drop the vector
     drop(vec);
diff --git a/taskchampion/taskchampion/src/server/crypto.rs b/taskchampion/taskchampion/src/server/crypto.rs
index 9a34f6575..bf9367a51 100644
--- a/taskchampion/taskchampion/src/server/crypto.rs
+++ b/taskchampion/taskchampion/src/server/crypto.rs
@@ -271,7 +271,7 @@ mod test {
 
         let unsealed = Unsealed {
             version_id,
-            payload: payload,
+            payload,
         };
         let sealed = cryptor.seal(unsealed).unwrap();
 
@@ -291,7 +291,7 @@ mod test {
 
         let unsealed = Unsealed {
             version_id,
-            payload: payload,
+            payload,
         };
         let mut sealed = cryptor.seal(unsealed).unwrap();
         sealed.version_id = Uuid::new_v4(); // change the version_id
@@ -309,7 +309,7 @@ mod test {
 
         let unsealed = Unsealed {
             version_id,
-            payload: payload,
+            payload,
         };
         let sealed = cryptor.seal(unsealed).unwrap();
 
diff --git a/taskchampion/taskchampion/src/taskdb/mod.rs b/taskchampion/taskchampion/src/taskdb/mod.rs
index ee1fcc0ad..3eb4ac291 100644
--- a/taskchampion/taskchampion/src/taskdb/mod.rs
+++ b/taskchampion/taskchampion/src/taskdb/mod.rs
@@ -173,10 +173,7 @@ impl TaskDb {
     #[cfg(test)]
     pub(crate) fn operations(&mut self) -> Vec<ReplicaOp> {
         let mut txn = self.storage.txn().unwrap();
-        txn.operations()
-            .unwrap()
-            .iter().cloned()
-            .collect()
+        txn.operations().unwrap().to_vec()
     }
 }
 
diff --git a/taskchampion/taskchampion/src/taskdb/working_set.rs b/taskchampion/taskchampion/src/taskdb/working_set.rs
index d6ae3c9fd..88d2dbbb6 100644
--- a/taskchampion/taskchampion/src/taskdb/working_set.rs
+++ b/taskchampion/taskchampion/src/taskdb/working_set.rs
@@ -119,12 +119,7 @@ mod test {
 
         assert_eq!(
             db.working_set()?,
-            vec![
-                None,
-                Some(uuids[1]),
-                Some(uuids[3]),
-                Some(uuids[4])
-            ]
+            vec![None, Some(uuids[1]), Some(uuids[3]), Some(uuids[4])]
         );
 
         rebuild(
@@ -142,22 +137,11 @@ mod test {
         let exp = if renumber {
             // uuids[1] and uuids[4] are already in the working set, so are compressed
             // to the top, and then uuids[0] is added.
-            vec![
-                None,
-                Some(uuids[1]),
-                Some(uuids[4]),
-                Some(uuids[0]),
-            ]
+            vec![None, Some(uuids[1]), Some(uuids[4]), Some(uuids[0])]
         } else {
             // uuids[1] and uuids[4] are already in the working set, at indexes 1 and 3,
             // and then uuids[0] is added.
-            vec![
-                None,
-                Some(uuids[1]),
-                None,
-                Some(uuids[4]),
-                Some(uuids[0]),
-            ]
+            vec![None, Some(uuids[1]), None, Some(uuids[4]), Some(uuids[0])]
         };
 
         assert_eq!(db.working_set()?, exp);