diff -U3 /tmp/cirrus-ci-build/src/test/regress/expected/btree_index.out /tmp/cirrus-ci-build/src/bin/pg_upgrade/tmp_check/results/btree_index.out
--- /tmp/cirrus-ci-build/src/test/regress/expected/btree_index.out	2024-08-20 17:54:27.346378763 +0000
+++ /tmp/cirrus-ci-build/src/bin/pg_upgrade/tmp_check/results/btree_index.out	2024-08-20 18:00:12.756127300 +0000
@@ -158,13 +158,10 @@
 set enable_bitmapscan to false;
 explain (costs off)
 select hundred, twenty from tenk1 where hundred < 48 order by hundred desc limit 1;
-                       QUERY PLAN                       
---------------------------------------------------------
- Limit
-   ->  Index Scan Backward using tenk1_hundred on tenk1
-         Index Cond: (hundred < 48)
-(3 rows)
-
+ERROR:  deadlock detected
+DETAIL:  Process 40736 waits for AccessShareLock on relation 24392 of database 16387; blocked by process 40724.
+Process 40724 waits for AccessExclusiveLock on relation 16421 of database 16387; blocked by process 40736.
+HINT:  See server log for query details.
 select hundred, twenty from tenk1 where hundred < 48 order by hundred desc limit 1;
  hundred | twenty 
 ---------+--------