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-rw-r--r--libs/bufferstreams/rust/src/buffers/buffer_owner.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/libs/bufferstreams/rust/src/buffers/buffer_owner.rs b/libs/bufferstreams/rust/src/buffers/buffer_owner.rs
index a4abb9d3b7..155a8bf238 100644
--- a/libs/bufferstreams/rust/src/buffers/buffer_owner.rs
+++ b/libs/bufferstreams/rust/src/buffers/buffer_owner.rs
@@ -16,7 +16,7 @@ use super::Buffer;
/// Trait that represents an owner of a buffer that might need to handle events such as a buffer
/// being dropped.
-pub trait BufferOwner {
+pub trait BufferOwner: Send + Sync {
/// Called when a buffer is dropped.
fn on_return(&self, buffer: &Buffer);
}