Can't create unlogged table - Mailing list pgsql-testers

Hi!
I try create unlogged table in 9.1beta3 (linux x86_64) execute such code:

create unlogged table public.test (
id serial primary key,
some_text text
);

and what I see is:

ERROR:  only temporary relations may be created in temporary schemas

What I do wrong?

Thank you,
Alexander