diff -r 6332e5f857f6 -r 3ced516694ad mercurial/copies.py
--- a/mercurial/copies.py	Tue Feb 18 15:33:26 2025 +0100
+++ b/mercurial/copies.py	Tue Feb 18 15:33:51 2025 +0100
@@ -28,7 +28,7 @@
     sidedata as sidedatamod,
 )
 
-rustmod = policy.importrust("copy_tracing")
+rustmod = policy.importrust("copy_tracing", pyo3=True)
 
 
 def _filter(src, dst, t):