this derivation will be built:
  /nix/store/dlq1am1n7c9s5s17d364r4i2ixfykzix-run-check-harness-psql-15.drv
error: Cannot build '/nix/store/dlq1am1n7c9s5s17d364r4i2ixfykzix-run-check-harness-psql-15.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/4nnkh6bas4krq4avcn7zi9l1aibcilz9-run-check-harness-psql-15
       Last 25 log lines:
       > test supautils_restrict_versions  ... ok           85 ms
       > test vault                        ... ok           29 ms
       > test wal2json                     ... ok           16 ms
       > test z_15_ext_interface           ... FAILED      634 ms
       > test z_15_intarray_ltree_query    ... ok           11 ms
       > test z_15_pg_stat_monitor         ... ok           11 ms
       > test z_15_pgjwt                   ... ok           20 ms
       > test z_15_pgvector                ... ok           37 ms
       > test z_15_plv8                    ... ok           48 ms
       > test z_15_roles                   ... ok           16 ms
       > test z_15_rum                     ... ok           19 ms
       > test z_15_timescale               ... ok           25 ms
       > test z_15_unhype_timescale_to_partman ... ok        11395 ms
       >
       > =======================
       >  2 of 72 tests failed.
       > =======================
       >
       > The differences that caused some tests to fail can be viewed in the
       > file "/nix/store/4nnkh6bas4krq4avcn7zi9l1aibcilz9-run-check-harness-psql-15/regression_output/regression.diffs".  A copy of the test summary that you see
       > above is saved in the file "/nix/store/4nnkh6bas4krq4avcn7zi9l1aibcilz9-run-check-harness-psql-15/regression_output/regression.out".
       >
       > 2026-10-07 15:25:27 [ERROR] pg_regress tests failed
       > 2026-10-07 15:25:27 [ERROR] An error occurred. Exit code: 1
       > 2026-10-07 15:25:27 [ERROR] Debug logs:
       For full logs, run:
         nix log /nix/store/dlq1am1n7c9s5s17d364r4i2ixfykzix-run-check-harness-psql-15.drv