functional.sqlancer.tidb_15844_test. NATURAL RIGHT JOIN results in an unexpected "Unknown column" error

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Full history of outcomes and elapsed time, ms:
NN SNAP_INFO CS_outcome SS_outcome CS_run_time SS_run_time CS_run_beg CS_run_end SS_run_beg SS_run_end
1 5.0.3.1675 2025.06.27 1bb2c P P 740 429 2025.06.30 06:02:17.221 2025.06.30 06:02:17.961 2025.06.30 04:33:26.844 2025.06.30 04:33:27.273
2 5.0.3.1674 2025.06.26 d366d P P 612 396 2025.06.27 05:24:56.522 2025.06.27 05:24:57.134 2025.06.27 04:02:31.461 2025.06.27 04:02:31.857
3 5.0.3.1673 2025.06.25 f0e1f P P 659 379 2025.06.26 05:29:43.614 2025.06.26 05:29:44.273 2025.06.26 04:06:48.928 2025.06.26 04:06:49.307
4 5.0.3.1668 2025.06.21 b8e22 P P 589 365 2025.06.25 05:28:58.198 2025.06.25 05:28:58.787 2025.06.25 04:05:41.103 2025.06.25 04:05:41.468
5 5.0.3.1667 2025.06.15 4374a P P 671 385 2025.06.21 05:10:34.277 2025.06.21 05:10:34.948 2025.06.21 03:46:48.957 2025.06.21 03:46:49.342
6 5.0.3.1666 2025.06.14 97178 P P 699 353 2025.06.15 05:37:10.890 2025.06.15 05:37:11.589 2025.06.15 04:13:31.790 2025.06.15 04:13:32.143
7 5.0.3.1665 2025.06.11 d8b62 P P 755 428 2025.06.14 05:59:49.289 2025.06.14 05:59:50.044 2025.06.14 04:30:37.028 2025.06.14 04:30:37.456
8 5.0.3.1661 2025.06.10 cfcf0 P P 763 457 2025.06.11 04:28:50.939 2025.06.11 04:28:51.702 2025.06.11 02:53:28.335 2025.06.11 02:53:28.792
9 5.0.3.1660 2025.06.07 db691 P P 789 441 2025.06.10 04:28:06.996 2025.06.10 04:28:07.785 2025.06.10 02:51:34.123 2025.06.10 02:51:34.564
10 5.0.3.1659 2025.05.28 f4c0f P P 721 434 2025.06.06 04:25:31.638 2025.06.06 04:25:32.359 2025.06.06 02:49:18.138 2025.06.06 02:49:18.572

Elapsed time, ms. Chart for last 10 runs:

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