diff -U3 /tmp/cirrus-ci-build/src/test/regress/expected/constraints.out /tmp/cirrus-ci-build/src/test/regress/results/constraints.out
--- /tmp/cirrus-ci-build/src/test/regress/expected/constraints.out	2026-03-19 10:19:49.812063463 +0000
+++ /tmp/cirrus-ci-build/src/test/regress/results/constraints.out	2026-03-19 10:23:43.068790242 +0000
@@ -1127,8 +1127,10 @@
 INSERT INTO ne_nn_tbl VALUES (NULL); -- ok
 ALTER TABLE ne_nn_tbl ALTER CONSTRAINT nn ENFORCED; -- error
 ERROR:  cannot alter enforceability of constraint "nn" of relation "ne_nn_tbl"
+HINT:  Only foreign key and check constraints can change enforceability.
 ALTER TABLE ne_nn_tbl ALTER CONSTRAINT nn NOT ENFORCED; -- error
 ERROR:  cannot alter enforceability of constraint "nn" of relation "ne_nn_tbl"
+HINT:  Only foreign key and check constraints can change enforceability.
 ALTER TABLE ne_nn_tbl VALIDATE CONSTRAINT nn; -- error
 ERROR:  cannot validate NOT ENFORCED constraint
 ALTER TABLE ne_nn_tbl ADD CONSTRAINT nn_enforced1 NOT NULL x NOT ENFORCED;  -- error