roachtest: sqlsmith/setup=seed-multi-region/setting=multi-region failed

[cockroach-teamcity]

roachtest.sqlsmith/setup=seed-multi-region/setting=multi-region failed with artifacts on master @ 89f4ad907a1756551bd6864c3e8516eeff6b0e0a:

test artifacts and logs in: /artifacts/sqlsmith/setup=seed-multi-region/setting=multi-region/run_1
	sqlsmith.go:266,sqlsmith.go:327,test_runner.go:928: error: pq: internal error: required ordering refers to non-output columns (op project)
		stmt:
		EXPLAIN SELECT
			tab_116._bytes AS col_241
		FROM
			(SELECT '5a251e7c-68b8-4d1f-bfc1-35ecc1fa5171':::UUID AS col_237, '10:25:58.549451-13:50:00':::TIMETZ AS col_238)
				AS tab_115 (col_239, col_240)
			JOIN defaultdb.public.seed_mr_table@[0] AS tab_116
				FULL JOIN defaultdb.public.seed_mr_table@[0] AS tab_117 ON true ON
					(tab_115.col_239) = (tab_116._uuid) AND (tab_115.col_239) = (tab_117._uuid)
		WHERE
			true
		ORDER BY
			tab_117._int8, tab_115.col_239 ASC, tab_117._timestamptz ASC, tab_116._float8 DESC
		LIMIT
			73:::INT8;

Parameters: ROACHTEST_cloud=gce , ROACHTEST_cpu=4 , ROACHTEST_encrypted=false , ROACHTEST_fs=ext4 , ROACHTEST_localSSD=true , ROACHTEST_ssd=0

Help

See: roachtest README

See: How To Investigate (internal)

/cc @cockroachdb/sql-queries

This test on roachdash | Improve this report!

Jira issue: CRDB-19921

[DrewKimball]

Dup of #88037