diff -U3 /tmp/cirrus-ci-build/src/test/regress/expected/subscription.out /tmp/cirrus-ci-build/build/testrun/pg_upgrade/002_pg_upgrade/data/results/subscription.out
--- /tmp/cirrus-ci-build/src/test/regress/expected/subscription.out	2025-11-07 11:14:47.567574000 +0000
+++ /tmp/cirrus-ci-build/build/testrun/pg_upgrade/002_pg_upgrade/data/results/subscription.out	2025-11-07 11:18:09.990434000 +0000
@@ -527,7 +527,9 @@
 -- configurations and checking the DDL.
 --
 CREATE ROLE createsub_role LOGIN;
+WARNING:  roles created by regression test cases should have names starting with "regress_"
 CREATE ROLE readalldata_role LOGIN;
+WARNING:  roles created by regression test cases should have names starting with "regress_"
 -- see the pg_get_subscription_ddl output for a NULL and empty input
 SELECT pg_get_subscription_ddl('');
 ERROR:  subscription "" does not exist
@@ -540,6 +542,7 @@
 -- Create subscription with minimal options
 CREATE SUBSCRIPTION testsub1 CONNECTION 'dbname=db_doesnotexist'
   PUBLICATION testpub1 WITH (connect=false);
+WARNING:  subscriptions created by regression test cases should have names starting with "regress_"
 WARNING:  subscription was created, but is not connected
 HINT:  To initiate replication, you must manually create the replication slot, enable the subscription, and alter the subscription to refresh publications.
 -- Check that the subscription ddl is correctly created
@@ -553,6 +556,7 @@
 CREATE SUBSCRIPTION "TestSubddL2" CONNECTION 'host=unknown user=dvd password=pass123'
   PUBLICATION "testpub2", "TestPub3" WITH (connect=false, slot_name='slot1',
   enabled=off);
+WARNING:  subscriptions created by regression test cases should have names starting with "regress_"
 WARNING:  subscription was created, but is not connected
 HINT:  To initiate replication, you must manually create the replication slot, enable the subscription, and alter the subscription to refresh publications.
 SELECT pg_get_subscription_ddl('TestSubddL2');
@@ -568,6 +572,7 @@
   synchronous_commit=local, two_phase=true, disable_on_error=true,
   password_required=false, run_as_owner=true, origin=none, failover=true,
   retain_dead_tuples=false, max_retention_duration=100);
+WARNING:  subscriptions created by regression test cases should have names starting with "regress_"
 NOTICE:  max_retention_duration is ineffective when retain_dead_tuples is disabled
 WARNING:  subscription was created, but is not connected
 HINT:  To initiate replication, you must manually create the replication slot, enable the subscription, and alter the subscription to refresh publications.