diff -U3 /tmp/cirrus-ci-build/contrib/unaccent/expected/unaccent.out /tmp/cirrus-ci-build/build/testrun/unaccent/regress/results/unaccent.out
--- /tmp/cirrus-ci-build/contrib/unaccent/expected/unaccent.out	2024-04-24 15:04:44.209600000 +0000
+++ /tmp/cirrus-ci-build/build/testrun/unaccent/regress/results/unaccent.out	2024-04-24 15:06:31.723525000 +0000
@@ -8,8 +8,10 @@
 \quit
 \endif
 CREATE EXTENSION unaccent;
+WARNING:  duplicate source strings, first one will be used
 SET client_encoding TO 'UTF8';
 SELECT unaccent('foobar');
+WARNING:  duplicate source strings, first one will be used
  unaccent 
 ----------
  foobar