diff --git a/differential-dataflow/src/trace/implementations/ord_neu.rs b/differential-dataflow/src/trace/implementations/ord_neu.rs
index 72d879371..4368c9391 100644
--- a/differential-dataflow/src/trace/implementations/ord_neu.rs
+++ b/differential-dataflow/src/trace/implementations/ord_neu.rs
@@ -393,8 +393,6 @@ pub mod val_batch {
     impl<L: Layout> Merger<OrdValBatch<L>> for OrdValMerger<L>
     where
         OrdValBatch<L>: Batch<Time=<L::Target as Update>::Time>,
-        for<'a> <L::TimeContainer as BatchContainer>::ReadItem<'a> : IntoOwned<'a, Owned = <L::Target as Update>::Time>,
-        for<'a> <L::DiffContainer as BatchContainer>::ReadItem<'a> : IntoOwned<'a, Owned = <L::Target as Update>::Diff>,
     {
         fn new(batch1: &OrdValBatch<L>, batch2: &OrdValBatch<L>, compaction_frontier: AntichainRef<<L::Target as Update>::Time>) -> Self {
 
@@ -682,8 +680,6 @@ pub mod val_batch {
             ValContainer: PushInto<CI::Val<'a>>,
         >,
         CI: for<'a> BuilderInput<L::KeyContainer, L::ValContainer, Time=<L::Target as Update>::Time, Diff=<L::Target as Update>::Diff>,
-        for<'a> <L::TimeContainer as BatchContainer>::ReadItem<'a> : IntoOwned<'a, Owned = <L::Target as Update>::Time>,
-        for<'a> <L::DiffContainer as BatchContainer>::ReadItem<'a> : IntoOwned<'a, Owned = <L::Target as Update>::Diff>,
     {
 
         type Input = CI;
@@ -874,8 +870,6 @@ pub mod key_batch {
     impl<L: Layout> Merger<OrdKeyBatch<L>> for OrdKeyMerger<L>
     where
         OrdKeyBatch<L>: Batch<Time=<L::Target as Update>::Time>,
-        for<'a> <L::TimeContainer as BatchContainer>::ReadItem<'a> : IntoOwned<'a, Owned = <L::Target as Update>::Time>,
-        for<'a> <L::DiffContainer as BatchContainer>::ReadItem<'a> : IntoOwned<'a, Owned = <L::Target as Update>::Diff>,
     {
         fn new(batch1: &OrdKeyBatch<L>, batch2: &OrdKeyBatch<L>, compaction_frontier: AntichainRef<<L::Target as Update>::Time>) -> Self {
 
@@ -1072,8 +1066,6 @@ pub mod key_batch {
     impl<L: Layout, CI> Builder for OrdKeyBuilder<L, CI>
     where
         L: for<'a> Layout<KeyContainer: PushInto<CI::Key<'a>>>,
-        for<'a> <L::TimeContainer as BatchContainer>::ReadItem<'a> : IntoOwned<'a, Owned = <L::Target as Update>::Time>,
-        for<'a> <L::DiffContainer as BatchContainer>::ReadItem<'a> : IntoOwned<'a, Owned = <L::Target as Update>::Diff>,
         CI: BuilderInput<L::KeyContainer, L::ValContainer, Time=<L::Target as Update>::Time, Diff=<L::Target as Update>::Diff>,
     {