diff -U3 /tmp/cirrus-ci-build/src/test/modules/brin/expected/summarization-and-inprogress-insertion.out /tmp/cirrus-ci-build/build/testrun/brin/isolation/results/summarization-and-inprogress-insertion.out
--- /tmp/cirrus-ci-build/src/test/modules/brin/expected/summarization-and-inprogress-insertion.out	2024-03-26 23:35:27.651674000 +0000
+++ /tmp/cirrus-ci-build/build/testrun/brin/isolation/results/summarization-and-inprogress-insertion.out	2024-03-26 23:53:54.362582000 +0000
@@ -1,6 +1,7 @@
 Parsed test spec with 2 sessions
 
 starting permutation: s2check s1b s2b s1i s2summ s1c s2c s2check
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2check: SELECT * FROM brin_page_items(get_raw_page('brinidx', 2), 'brinidx'::regclass);
 itemoffset|blknum|attnum|allnulls|hasnulls|placeholder|empty|value   
 ----------+------+------+--------+--------+-----------+-----+--------
@@ -23,6 +24,7 @@
 
 step s1c: COMMIT;
 step s2c: COMMIT;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2check: SELECT * FROM brin_page_items(get_raw_page('brinidx', 2), 'brinidx'::regclass);
 itemoffset|blknum|attnum|allnulls|hasnulls|placeholder|empty|value      
 ----------+------+------+--------+--------+-----------+-----+-----------
@@ -32,6 +34,7 @@
 
 
 starting permutation: s2check s1b s1i s2vacuum s1c s2check
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2check: SELECT * FROM brin_page_items(get_raw_page('brinidx', 2), 'brinidx'::regclass);
 itemoffset|blknum|attnum|allnulls|hasnulls|placeholder|empty|value   
 ----------+------+------+--------+--------+-----------+-----+--------
@@ -42,6 +45,7 @@
 step s1i: INSERT INTO brin_iso VALUES (1000);
 step s2vacuum: VACUUM brin_iso;
 step s1c: COMMIT;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2check: SELECT * FROM brin_page_items(get_raw_page('brinidx', 2), 'brinidx'::regclass);
 itemoffset|blknum|attnum|allnulls|hasnulls|placeholder|empty|value      
 ----------+------+------+--------+--------+-----------+-----+-----------