diff -U3 /tmp/cirrus-ci-build/contrib/seg/expected/seg.out /tmp/cirrus-ci-build/build/testrun/seg/regress/results/seg.out
--- /tmp/cirrus-ci-build/contrib/seg/expected/seg.out	2024-03-19 00:05:09.496989000 +0000
+++ /tmp/cirrus-ci-build/build/testrun/seg/regress/results/seg.out	2024-03-19 00:22:52.117388000 +0000
@@ -6,6 +6,7 @@
 SELECT amname, opcname
 FROM pg_opclass opc LEFT JOIN pg_am am ON am.oid = opcmethod
 WHERE opc.oid >= 16384 AND NOT amvalidate(opc.oid);
+WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
  amname | opcname 
 --------+---------
 (0 rows)
@@ -1287,6 +1288,7 @@
                   '1 e7',
                   '1e700']) str,
      LATERAL pg_input_error_info(str, 'seg') as errinfo;
+WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
    seg    | ok | sql_error_code |                message                |            detail            | hint 
 ----------+----+----------------+---------------------------------------+------------------------------+------
  -1 .. 1  | t  |                |                                       |                              |