Hi Fujii-san,
Thank you for your comment!
attach v5 fixed patch.
> Using "postgres" as the default superuser name can cause instability.
> This is why the Patch Tester reports now test failures again.
> You should create and use a different superuser, such as
> "regress_stats_superuser."
I understand.
Add "regress_stats_superuser" for test by superuser.
Best Regards,
Keisuke Kuroda
NTT Comware