diff -U3 /tmp/cirrus-ci-build/contrib/basic_archive/expected/basic_archive.out /tmp/cirrus-ci-build/build/testrun/basic_archive/regress/results/basic_archive.out
--- /tmp/cirrus-ci-build/contrib/basic_archive/expected/basic_archive.out	2024-03-19 15:41:20.180660000 +0000
+++ /tmp/cirrus-ci-build/build/testrun/basic_archive/regress/results/basic_archive.out	2024-03-19 15:59:07.447287000 +0000
@@ -1,5 +1,6 @@
 CREATE TABLE test (a INT);
 SELECT 1 FROM pg_switch_wal();
+WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
  ?column? 
 ----------
         1
@@ -19,8 +20,10 @@
 	END LOOP;
 END
 $$;
+WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 SELECT count(*) > 0 FROM pg_ls_dir('.', false, false) a
 	WHERE a ~ '^[0-9A-F]{24}$';
+WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
  ?column? 
 ----------
  t