diff --git a/lib/src/revset_graph.rs b/lib/src/revset_graph.rs
index 952fb93fe..c1bc51d84 100644
--- a/lib/src/revset_graph.rs
+++ b/lib/src/revset_graph.rs
@@ -66,9 +66,7 @@ pub struct ReverseRevsetGraphIterator {
 }
 
 impl ReverseRevsetGraphIterator {
-    pub fn new<'revset>(
-        input: Box<dyn Iterator<Item = (CommitId, Vec<RevsetGraphEdge>)> + 'revset>,
-    ) -> Self {
+    pub fn new(input: impl IntoIterator<Item = (CommitId, Vec<RevsetGraphEdge>)>) -> Self {
         let mut entries = vec![];
         let mut reverse_edges: HashMap<CommitId, Vec<RevsetGraphEdge>> = HashMap::new();
         for (commit_id, edges) in input {
diff --git a/src/commands/mod.rs b/src/commands/mod.rs
index e7f326bd9..df17fda73 100644
--- a/src/commands/mod.rs
+++ b/src/commands/mod.rs
@@ -1591,7 +1591,7 @@ fn cmd_log(ui: &mut Ui, command: &CommandHelper, args: &LogArgs) -> Result<(), C
             let default_node_symbol = graph.default_node_symbol().to_owned();
             let forward_iter = TopoGroupedRevsetGraphIterator::new(revset.iter_graph());
             let iter: Box<dyn Iterator<Item = _>> = if args.reversed {
-                Box::new(ReverseRevsetGraphIterator::new(Box::new(forward_iter)))
+                Box::new(ReverseRevsetGraphIterator::new(forward_iter))
             } else {
                 Box::new(forward_iter)
             };