diff -U3 /tmp/cirrus-ci-build/src/test/isolation/expected/read-write-unique-3.out /tmp/cirrus-ci-build/build/testrun/isolation/isolation/results/read-write-unique-3.out
--- /tmp/cirrus-ci-build/src/test/isolation/expected/read-write-unique-3.out	2024-03-21 16:29:26.429951000 +0000
+++ /tmp/cirrus-ci-build/build/testrun/isolation/isolation/results/read-write-unique-3.out	2024-03-21 16:31:16.475305000 +0000
@@ -1,12 +1,14 @@
 Parsed test spec with 2 sessions
 
 starting permutation: rw1 rw2 c1 c2
+s1: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step rw1: SELECT insert_unique(1, '1');
 insert_unique
 -------------
              
 (1 row)
 
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step rw2: SELECT insert_unique(1, '2'); <waiting ...>
 step c1: COMMIT;
 step rw2: <... completed>
diff -U3 /tmp/cirrus-ci-build/src/test/isolation/expected/update-conflict-out.out /tmp/cirrus-ci-build/build/testrun/isolation/isolation/results/update-conflict-out.out
--- /tmp/cirrus-ci-build/src/test/isolation/expected/update-conflict-out.out	2024-03-21 16:29:26.430717000 +0000
+++ /tmp/cirrus-ci-build/build/testrun/isolation/isolation/results/update-conflict-out.out	2024-03-21 16:31:28.482559000 +0000
@@ -6,7 +6,9 @@
 --+---
 (0 rows)
 
+bar: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step bar_insert: INSERT INTO txn0 SELECT 42, 'bar_insert';
+foo: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step foo_insert: INSERT INTO txn1 SELECT 7, 'foo_insert';
 step foo_commit: COMMIT;
 step trouble_update: UPDATE txn1 SET val = 'add physical version for "bar_select"' WHERE id = 7;
@@ -21,7 +23,9 @@
 --+---
 (0 rows)
 
+bar: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step bar_insert: INSERT INTO txn0 SELECT 42, 'bar_insert';
+foo: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step foo_insert: INSERT INTO txn1 SELECT 7, 'foo_insert';
 step foo_commit: COMMIT;
 step trouble_delete: DELETE FROM txn1 WHERE id = 7;
diff -U3 /tmp/cirrus-ci-build/src/test/isolation/expected/detach-partition-concurrently-2.out /tmp/cirrus-ci-build/build/testrun/isolation/isolation/results/detach-partition-concurrently-2.out
--- /tmp/cirrus-ci-build/src/test/isolation/expected/detach-partition-concurrently-2.out	2024-03-21 16:29:26.428560000 +0000
+++ /tmp/cirrus-ci-build/build/testrun/isolation/isolation/results/detach-partition-concurrently-2.out	2024-03-21 16:31:31.722300000 +0000
@@ -9,6 +9,7 @@
 2
 (2 rows)
 
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2d: ALTER TABLE d_lp_fk DETACH PARTITION d_lp_fk_1 CONCURRENTLY; <waiting ...>
 step s3i1: INSERT INTO d_lp_fk_r VALUES (1);
 ERROR:  insert or update on table "d_lp_fk_r" violates foreign key constraint "d_lp_fk_r_a_fkey"
@@ -24,6 +25,7 @@
 2
 (2 rows)
 
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2d: ALTER TABLE d_lp_fk DETACH PARTITION d_lp_fk_1 CONCURRENTLY; <waiting ...>
 step s3i2: INSERT INTO d_lp_fk_r VALUES (2);
 step s3i2: INSERT INTO d_lp_fk_r VALUES (2);
@@ -40,6 +42,7 @@
 (2 rows)
 
 step s3i1: INSERT INTO d_lp_fk_r VALUES (1);
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2d: ALTER TABLE d_lp_fk DETACH PARTITION d_lp_fk_1 CONCURRENTLY;
 ERROR:  removing partition "d_lp_fk_1" violates foreign key constraint "d_lp_fk_r_a_fkey1"
 step s1c: COMMIT;
@@ -54,6 +57,7 @@
 (2 rows)
 
 step s3i2: INSERT INTO d_lp_fk_r VALUES (2);
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2d: ALTER TABLE d_lp_fk DETACH PARTITION d_lp_fk_1 CONCURRENTLY; <waiting ...>
 step s1c: COMMIT;
 step s2d: <... completed>
@@ -68,6 +72,7 @@
 (2 rows)
 
 step s3b: BEGIN;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2d: ALTER TABLE d_lp_fk DETACH PARTITION d_lp_fk_1 CONCURRENTLY; <waiting ...>
 step s3i1: INSERT INTO d_lp_fk_r VALUES (1);
 ERROR:  insert or update on table "d_lp_fk_r" violates foreign key constraint "d_lp_fk_r_a_fkey"
diff -U3 /tmp/cirrus-ci-build/src/test/isolation/expected/detach-partition-concurrently-3.out /tmp/cirrus-ci-build/build/testrun/isolation/isolation/results/detach-partition-concurrently-3.out
--- /tmp/cirrus-ci-build/src/test/isolation/expected/detach-partition-concurrently-3.out	2024-03-21 16:29:26.428576000 +0000
+++ /tmp/cirrus-ci-build/build/testrun/isolation/isolation/results/detach-partition-concurrently-3.out	2024-03-21 16:31:32.832489000 +0000
@@ -1,6 +1,7 @@
 Parsed test spec with 2 sessions
 
 starting permutation: s2snitch s1b s1s s2detach s1cancel s1c s1describe s1alter
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: INSERT INTO d3_pid SELECT pg_backend_pid();
 step s1b: BEGIN;
 step s1s: SELECT * FROM d3_listp;
@@ -20,6 +21,7 @@
 (1 row)
 
 step s1c: COMMIT;
+s1: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s1describe: SELECT 'd3_listp' AS root, * FROM pg_partition_tree('d3_listp')
 					  UNION ALL SELECT 'd3_listp1', * FROM pg_partition_tree('d3_listp1');
 root     |relid    |parentrelid|isleaf|level
@@ -33,6 +35,7 @@
 ERROR:  cannot alter partition "d3_listp1" with an incomplete detach
 
 starting permutation: s2snitch s1b s1s s2detach s1cancel s1insert s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: INSERT INTO d3_pid SELECT pg_backend_pid();
 step s1b: BEGIN;
 step s1s: SELECT * FROM d3_listp;
@@ -56,6 +59,7 @@
 step s1c: COMMIT;
 
 starting permutation: s2snitch s1brr s1s s2detach s1cancel s1insert s1c s1spart
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: INSERT INTO d3_pid SELECT pg_backend_pid();
 step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
 step s1s: SELECT * FROM d3_listp;
@@ -85,6 +89,7 @@
 
 
 starting permutation: s2snitch s1b s1s s2detach s1cancel s1c s1insertpart
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: INSERT INTO d3_pid SELECT pg_backend_pid();
 step s1b: BEGIN;
 step s1s: SELECT * FROM d3_listp;
@@ -107,6 +112,7 @@
 step s1insertpart: INSERT INTO d3_listp1 VALUES (1);
 
 starting permutation: s2snitch s1b s1s s2detach2 s1cancel s1c s1brr s1insert s1s s1insert s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: INSERT INTO d3_pid SELECT pg_backend_pid();
 step s1b: BEGIN;
 step s1s: SELECT * FROM d3_listp;
@@ -139,6 +145,7 @@
 step s1c: COMMIT;
 
 starting permutation: s2snitch s1b s1s s2detach2 s1cancel s1c s1brr s1s s1insert s1s s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: INSERT INTO d3_pid SELECT pg_backend_pid();
 step s1b: BEGIN;
 step s1s: SELECT * FROM d3_listp;
@@ -176,6 +183,7 @@
 step s1c: COMMIT;
 
 starting permutation: s2snitch s1b s1s s2detach s1cancel s1c s1drop s1list
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: INSERT INTO d3_pid SELECT pg_backend_pid();
 step s1b: BEGIN;
 step s1s: SELECT * FROM d3_listp;
@@ -204,6 +212,7 @@
 
 
 starting permutation: s2snitch s1b s1s s2detach s1cancel s1c s1trunc s1spart
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: INSERT INTO d3_pid SELECT pg_backend_pid();
 step s1b: BEGIN;
 step s1s: SELECT * FROM d3_listp;
@@ -232,6 +241,7 @@
 
 
 starting permutation: s2snitch s1b s1s s2detach s1cancel s1noop s2detach2 s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: INSERT INTO d3_pid SELECT pg_backend_pid();
 step s1b: BEGIN;
 step s1s: SELECT * FROM d3_listp;
@@ -256,6 +266,7 @@
 step s1c: COMMIT;
 
 starting permutation: s2snitch s1b s1s s2detach s1cancel s1noop s2detachfinal s1c s2detach2
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: INSERT INTO d3_pid SELECT pg_backend_pid();
 step s1b: BEGIN;
 step s1s: SELECT * FROM d3_listp;
@@ -281,6 +292,7 @@
 step s2detach2: ALTER TABLE d3_listp DETACH PARTITION d3_listp2 CONCURRENTLY;
 
 starting permutation: s2snitch s1b s1s s2detach s1cancel s1c s1droppart s2detach2
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: INSERT INTO d3_pid SELECT pg_backend_pid();
 step s1b: BEGIN;
 step s1s: SELECT * FROM d3_listp;
@@ -304,6 +316,7 @@
 step s2detach2: ALTER TABLE d3_listp DETACH PARTITION d3_listp2 CONCURRENTLY;
 
 starting permutation: s2snitch s1b s1s s2detach s1cancel s1c s2begin s2drop s1s s2commit
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: INSERT INTO d3_pid SELECT pg_backend_pid();
 step s1b: BEGIN;
 step s1s: SELECT * FROM d3_listp;
@@ -334,6 +347,7 @@
 
 
 starting permutation: s2snitch s1b s1s s2detach s1cancel s1c s1b s1spart s2detachfinal s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: INSERT INTO d3_pid SELECT pg_backend_pid();
 step s1b: BEGIN;
 step s1s: SELECT * FROM d3_listp;
@@ -365,6 +379,7 @@
 step s2detachfinal: <... completed>
 
 starting permutation: s2snitch s1b s1s s2detach s1cancel s1c s1b s1s s2detachfinal s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: INSERT INTO d3_pid SELECT pg_backend_pid();
 step s1b: BEGIN;
 step s1s: SELECT * FROM d3_listp;
@@ -394,6 +409,7 @@
 step s1c: COMMIT;
 
 starting permutation: s2snitch s1b s1s s2detach s1cancel s1c s1b s1spart s2detachfinal s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: INSERT INTO d3_pid SELECT pg_backend_pid();
 step s1b: BEGIN;
 step s1s: SELECT * FROM d3_listp;
@@ -425,6 +441,7 @@
 step s2detachfinal: <... completed>
 
 starting permutation: s2snitch s1b s1s s2detach s1cancel s1c s2begin s2detachfinal s2commit
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: INSERT INTO d3_pid SELECT pg_backend_pid();
 step s1b: BEGIN;
 step s1s: SELECT * FROM d3_listp;
@@ -449,6 +466,7 @@
 step s2commit: COMMIT;
 
 starting permutation: s2snitch s1b s1s s2detach s1cancel s1c s2begin s2detachfinal s1spart s2commit
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: INSERT INTO d3_pid SELECT pg_backend_pid();
 step s1b: BEGIN;
 step s1s: SELECT * FROM d3_listp;
@@ -480,6 +498,7 @@
 
 
 starting permutation: s2snitch s1b s1s s2detach s1cancel s1c s2begin s2detachfinal s1insertpart s2commit
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: INSERT INTO d3_pid SELECT pg_backend_pid();
 step s1b: BEGIN;
 step s1s: SELECT * FROM d3_listp;
diff -U3 /tmp/cirrus-ci-build/src/test/isolation/expected/detach-partition-concurrently-4.out /tmp/cirrus-ci-build/build/testrun/isolation/isolation/results/detach-partition-concurrently-4.out
--- /tmp/cirrus-ci-build/src/test/isolation/expected/detach-partition-concurrently-4.out	2024-03-21 16:29:26.428591000 +0000
+++ /tmp/cirrus-ci-build/build/testrun/isolation/isolation/results/detach-partition-concurrently-4.out	2024-03-21 16:31:34.100559000 +0000
@@ -1,6 +1,7 @@
 Parsed test spec with 3 sessions
 
 starting permutation: s2snitch s1b s1s s2detach s1cancel s1insert s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: insert into d4_pid select pg_backend_pid();
 step s1b: begin;
 step s1s: select * from d4_primary;
@@ -10,6 +11,7 @@
 2
 (2 rows)
 
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2detach: alter table d4_primary detach partition d4_primary1 concurrently; <waiting ...>
 step s1cancel: select pg_cancel_backend(pid) from d4_pid; <waiting ...>
 step s2detach: <... completed>
@@ -25,6 +27,7 @@
 step s1c: commit;
 
 starting permutation: s2snitch s1b s1s s2detach s1insert s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: insert into d4_pid select pg_backend_pid();
 step s1b: begin;
 step s1s: select * from d4_primary;
@@ -34,6 +37,7 @@
 2
 (2 rows)
 
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2detach: alter table d4_primary detach partition d4_primary1 concurrently; <waiting ...>
 step s1insert: insert into d4_fk values (1);
 ERROR:  insert or update on table "d4_fk" violates foreign key constraint "d4_fk_a_fkey"
@@ -41,6 +45,7 @@
 step s1c: commit;
 
 starting permutation: s2snitch s1brr s1s s2detach s1cancel s1insert s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: insert into d4_pid select pg_backend_pid();
 step s1brr: begin isolation level repeatable read;
 step s1s: select * from d4_primary;
@@ -50,6 +55,7 @@
 2
 (2 rows)
 
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2detach: alter table d4_primary detach partition d4_primary1 concurrently; <waiting ...>
 step s1cancel: select pg_cancel_backend(pid) from d4_pid; <waiting ...>
 step s2detach: <... completed>
@@ -65,6 +71,7 @@
 step s1c: commit;
 
 starting permutation: s2snitch s1brr s1s s2detach s1insert s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: insert into d4_pid select pg_backend_pid();
 step s1brr: begin isolation level repeatable read;
 step s1s: select * from d4_primary;
@@ -74,6 +81,7 @@
 2
 (2 rows)
 
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2detach: alter table d4_primary detach partition d4_primary1 concurrently; <waiting ...>
 step s1insert: insert into d4_fk values (1);
 ERROR:  insert or update on table "d4_fk" violates foreign key constraint "d4_fk_a_fkey"
@@ -81,9 +89,11 @@
 step s1c: commit;
 
 starting permutation: s2snitch s1b s1declare s2detach s1cancel s1fetchall s1insert s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: insert into d4_pid select pg_backend_pid();
 step s1b: begin;
 step s1declare: declare f cursor for select * from d4_primary;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2detach: alter table d4_primary detach partition d4_primary1 concurrently; <waiting ...>
 step s1cancel: select pg_cancel_backend(pid) from d4_pid; <waiting ...>
 step s2detach: <... completed>
@@ -106,9 +116,11 @@
 step s1c: commit;
 
 starting permutation: s2snitch s1b s1declare s2detach s1fetchall s1insert s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: insert into d4_pid select pg_backend_pid();
 step s1b: begin;
 step s1declare: declare f cursor for select * from d4_primary;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2detach: alter table d4_primary detach partition d4_primary1 concurrently; <waiting ...>
 step s1fetchall: fetch all from f;
 a
@@ -123,9 +135,11 @@
 step s1c: commit;
 
 starting permutation: s2snitch s1b s1declare s2detach s1cancel s1svpt s1insert s1rollback s1fetchall s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: insert into d4_pid select pg_backend_pid();
 step s1b: begin;
 step s1declare: declare f cursor for select * from d4_primary;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2detach: alter table d4_primary detach partition d4_primary1 concurrently; <waiting ...>
 step s1cancel: select pg_cancel_backend(pid) from d4_pid; <waiting ...>
 step s2detach: <... completed>
@@ -150,9 +164,11 @@
 step s1c: commit;
 
 starting permutation: s2snitch s1b s1declare s2detach s1svpt s1insert s1rollback s1fetchall s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: insert into d4_pid select pg_backend_pid();
 step s1b: begin;
 step s1declare: declare f cursor for select * from d4_primary;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2detach: alter table d4_primary detach partition d4_primary1 concurrently; <waiting ...>
 step s1svpt: savepoint f;
 step s1insert: insert into d4_fk values (1);
@@ -169,8 +185,10 @@
 step s2detach: <... completed>
 
 starting permutation: s2snitch s1b s2detach s1declare s1cancel s1fetchall s1insert s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: insert into d4_pid select pg_backend_pid();
 step s1b: begin;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2detach: alter table d4_primary detach partition d4_primary1 concurrently;
 step s1declare: declare f cursor for select * from d4_primary;
 step s1cancel: select pg_cancel_backend(pid) from d4_pid;
@@ -190,8 +208,10 @@
 step s1c: commit;
 
 starting permutation: s2snitch s1b s2detach s1declare s1fetchall s1insert s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: insert into d4_pid select pg_backend_pid();
 step s1b: begin;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2detach: alter table d4_primary detach partition d4_primary1 concurrently;
 step s1declare: declare f cursor for select * from d4_primary;
 step s1fetchall: fetch all from f;
@@ -205,8 +225,10 @@
 step s1c: commit;
 
 starting permutation: s2snitch s1b s2detach s1declare s1cancel s1svpt s1insert s1rollback s1fetchall s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: insert into d4_pid select pg_backend_pid();
 step s1b: begin;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2detach: alter table d4_primary detach partition d4_primary1 concurrently;
 step s1declare: declare f cursor for select * from d4_primary;
 step s1cancel: select pg_cancel_backend(pid) from d4_pid;
@@ -228,8 +250,10 @@
 step s1c: commit;
 
 starting permutation: s2snitch s1b s2detach s1declare s1svpt s1insert s1rollback s1fetchall s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: insert into d4_pid select pg_backend_pid();
 step s1b: begin;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2detach: alter table d4_primary detach partition d4_primary1 concurrently;
 step s1declare: declare f cursor for select * from d4_primary;
 step s1svpt: savepoint f;
@@ -245,6 +269,7 @@
 step s1c: commit;
 
 starting permutation: s2snitch s1brr s1declare2 s1fetchone s2detach s1cancel s1updcur s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: insert into d4_pid select pg_backend_pid();
 step s1brr: begin isolation level repeatable read;
 step s1declare2: declare f cursor for select * from d4_fk where a = 2;
@@ -254,6 +279,7 @@
 2
 (1 row)
 
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2detach: alter table d4_primary detach partition d4_primary1 concurrently; <waiting ...>
 step s1cancel: select pg_cancel_backend(pid) from d4_pid; <waiting ...>
 step s2detach: <... completed>
@@ -269,6 +295,7 @@
 step s1c: commit;
 
 starting permutation: s2snitch s1brr s1declare2 s1fetchone s2detach s1updcur s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: insert into d4_pid select pg_backend_pid();
 step s1brr: begin isolation level repeatable read;
 step s1declare2: declare f cursor for select * from d4_fk where a = 2;
@@ -278,6 +305,7 @@
 2
 (1 row)
 
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2detach: alter table d4_primary detach partition d4_primary1 concurrently; <waiting ...>
 step s1updcur: update d4_fk set a = 1 where current of f;
 ERROR:  insert or update on table "d4_fk" violates foreign key constraint "d4_fk_a_fkey"
@@ -285,6 +313,7 @@
 step s1c: commit;
 
 starting permutation: s2snitch s1brr s1declare2 s1fetchone s1updcur s2detach s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: insert into d4_pid select pg_backend_pid();
 step s1brr: begin isolation level repeatable read;
 step s1declare2: declare f cursor for select * from d4_fk where a = 2;
@@ -297,10 +326,12 @@
 step s1updcur: update d4_fk set a = 1 where current of f;
 step s2detach: alter table d4_primary detach partition d4_primary1 concurrently; <waiting ...>
 step s1c: commit;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2detach: <... completed>
 ERROR:  removing partition "d4_primary1" violates foreign key constraint "d4_fk_a_fkey1"
 
 starting permutation: s2snitch s1b s1s s2detach s3insert s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: insert into d4_pid select pg_backend_pid();
 step s1b: begin;
 step s1s: select * from d4_primary;
@@ -310,6 +341,7 @@
 2
 (2 rows)
 
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2detach: alter table d4_primary detach partition d4_primary1 concurrently; <waiting ...>
 step s3insert: insert into d4_fk values (1);
 ERROR:  insert or update on table "d4_fk" violates foreign key constraint "d4_fk_a_fkey"
@@ -317,6 +349,7 @@
 step s2detach: <... completed>
 
 starting permutation: s2snitch s1b s1s s2detach s3brr s3insert s3commit s1cancel s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: insert into d4_pid select pg_backend_pid();
 step s1b: begin;
 step s1s: select * from d4_primary;
@@ -326,6 +359,7 @@
 2
 (2 rows)
 
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2detach: alter table d4_primary detach partition d4_primary1 concurrently; <waiting ...>
 step s3brr: begin isolation level repeatable read;
 step s3insert: insert into d4_fk values (1);
@@ -343,6 +377,7 @@
 step s1c: commit;
 
 starting permutation: s2snitch s1b s1s s2detach s3brr s3insert s3commit s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: insert into d4_pid select pg_backend_pid();
 step s1b: begin;
 step s1s: select * from d4_primary;
@@ -352,6 +387,7 @@
 2
 (2 rows)
 
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2detach: alter table d4_primary detach partition d4_primary1 concurrently; <waiting ...>
 step s3brr: begin isolation level repeatable read;
 step s3insert: insert into d4_fk values (1);
@@ -361,6 +397,7 @@
 step s2detach: <... completed>
 
 starting permutation: s2snitch s1brr s1s s2detach s1cancel s1noop s3vacfreeze s1s s1insert s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: insert into d4_pid select pg_backend_pid();
 step s1brr: begin isolation level repeatable read;
 step s1s: select * from d4_primary;
@@ -370,6 +407,7 @@
 2
 (2 rows)
 
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2detach: alter table d4_primary detach partition d4_primary1 concurrently; <waiting ...>
 step s1cancel: select pg_cancel_backend(pid) from d4_pid; <waiting ...>
 step s2detach: <... completed>
@@ -394,6 +432,7 @@
 step s1c: commit;
 
 starting permutation: s2snitch s1b s1s s2detach s1cancel s1noop s3vacfreeze s1s s1insert s1c
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2snitch: insert into d4_pid select pg_backend_pid();
 step s1b: begin;
 step s1s: select * from d4_primary;
@@ -403,6 +442,7 @@
 2
 (2 rows)
 
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2detach: alter table d4_primary detach partition d4_primary1 concurrently; <waiting ...>
 step s1cancel: select pg_cancel_backend(pid) from d4_pid; <waiting ...>
 step s2detach: <... completed>
diff -U3 /tmp/cirrus-ci-build/src/test/isolation/expected/fk-partitioned-1.out /tmp/cirrus-ci-build/build/testrun/isolation/isolation/results/fk-partitioned-1.out
--- /tmp/cirrus-ci-build/src/test/isolation/expected/fk-partitioned-1.out	2024-03-21 16:29:26.428794000 +0000
+++ /tmp/cirrus-ci-build/build/testrun/isolation/isolation/results/fk-partitioned-1.out	2024-03-21 16:31:35.340567000 +0000
@@ -5,6 +5,7 @@
 step s1d: delete from ppk1 where a = 1;
 step s1c: commit;
 step s2b: begin;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2a: alter table pfk attach partition pfk1 for values in (1);
 ERROR:  insert or update on table "pfk1" violates foreign key constraint "pfk_a_fkey"
 step s2c: commit;
@@ -14,6 +15,7 @@
 step s1d: delete from ppk1 where a = 1;
 step s2b: begin;
 step s1c: commit;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2a: alter table pfk attach partition pfk1 for values in (1);
 ERROR:  insert or update on table "pfk1" violates foreign key constraint "pfk_a_fkey"
 step s2c: commit;
@@ -24,6 +26,7 @@
 step s2b: begin;
 step s2a: alter table pfk attach partition pfk1 for values in (1); <waiting ...>
 step s1c: commit;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2a: <... completed>
 ERROR:  insert or update on table "pfk1" violates foreign key constraint "pfk_a_fkey"
 step s2c: commit;
@@ -33,6 +36,7 @@
 step s2b: begin;
 step s1d: delete from ppk1 where a = 1;
 step s1c: commit;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2a: alter table pfk attach partition pfk1 for values in (1);
 ERROR:  insert or update on table "pfk1" violates foreign key constraint "pfk_a_fkey"
 step s2c: commit;
@@ -43,6 +47,7 @@
 step s1d: delete from ppk1 where a = 1;
 step s2a: alter table pfk attach partition pfk1 for values in (1); <waiting ...>
 step s1c: commit;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2a: <... completed>
 ERROR:  insert or update on table "pfk1" violates foreign key constraint "pfk_a_fkey"
 step s2c: commit;
@@ -50,6 +55,7 @@
 starting permutation: s1b s2b s2a s1d s2c s1c
 step s1b: begin;
 step s2b: begin;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2a: alter table pfk attach partition pfk1 for values in (1);
 step s1d: delete from ppk1 where a = 1; <waiting ...>
 step s2c: commit;
@@ -60,6 +66,7 @@
 starting permutation: s1b s2b s2a s2c s1d s1c
 step s1b: begin;
 step s2b: begin;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2a: alter table pfk attach partition pfk1 for values in (1);
 step s2c: commit;
 step s1d: delete from ppk1 where a = 1;
@@ -71,6 +78,7 @@
 step s1b: begin;
 step s1d: delete from ppk1 where a = 1;
 step s1c: commit;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2a: alter table pfk attach partition pfk1 for values in (1);
 ERROR:  insert or update on table "pfk1" violates foreign key constraint "pfk_a_fkey"
 step s2c: commit;
@@ -81,6 +89,7 @@
 step s1d: delete from ppk1 where a = 1;
 step s2a: alter table pfk attach partition pfk1 for values in (1); <waiting ...>
 step s1c: commit;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2a: <... completed>
 ERROR:  insert or update on table "pfk1" violates foreign key constraint "pfk_a_fkey"
 step s2c: commit;
@@ -88,6 +97,7 @@
 starting permutation: s2b s1b s2a s1d s2c s1c
 step s2b: begin;
 step s1b: begin;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2a: alter table pfk attach partition pfk1 for values in (1);
 step s1d: delete from ppk1 where a = 1; <waiting ...>
 step s2c: commit;
@@ -98,6 +108,7 @@
 starting permutation: s2b s1b s2a s2c s1d s1c
 step s2b: begin;
 step s1b: begin;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2a: alter table pfk attach partition pfk1 for values in (1);
 step s2c: commit;
 step s1d: delete from ppk1 where a = 1;
@@ -106,6 +117,7 @@
 
 starting permutation: s2b s2a s1b s1d s2c s1c
 step s2b: begin;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2a: alter table pfk attach partition pfk1 for values in (1);
 step s1b: begin;
 step s1d: delete from ppk1 where a = 1; <waiting ...>
@@ -116,6 +128,7 @@
 
 starting permutation: s2b s2a s1b s2c s1d s1c
 step s2b: begin;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2a: alter table pfk attach partition pfk1 for values in (1);
 step s1b: begin;
 step s2c: commit;
@@ -125,6 +138,7 @@
 
 starting permutation: s2b s2a s2c s1b s1d s1c
 step s2b: begin;
+s2: WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 step s2a: alter table pfk attach partition pfk1 for values in (1);
 step s2c: commit;
 step s1b: begin;