diff -U3 /home/postgres/postgres/src/test/regress/expected/create_index.out /home/postgres/postgres/build/testrun/pg_upgrade/002_pg_upgrade/data/results/create_index.out
--- /home/postgres/postgres/src/test/regress/expected/create_index.out	Sat Oct 25 17:08:02 2025
+++ /home/postgres/postgres/build/testrun/pg_upgrade/002_pg_upgrade/data/results/create_index.out	Sat Oct 25 17:09:48 2025
@@ -1216,6 +1216,7 @@
 -- maintenance_work_mem setting and fillfactor:
 SET maintenance_work_mem = '1MB';
 CREATE INDEX hash_tuplesort_idx ON tenk1 USING hash (stringu1 name_ops) WITH (fillfactor = 10);
+WARNING:  spool init
 EXPLAIN (COSTS OFF)
 SELECT count(*) FROM tenk1 WHERE stringu1 = 'TVAAAA';
                       QUERY PLAN