LANG=ru_RU.UTF-8 USE="unicode" cdrtools version 2.01-r3 makes .iso properly, but version 2.01.01_alpha10 assumes, that my codepage is iso8859-1 (ebuild seems have forgot 'files/mkisofs-iconv-10.patch') and makes unreadable .isos and .udfs.
*** This bug has been marked as a duplicate of 129759 ***