Probably a simple typo...
t/format_bytes.t ..... ok
t/format_negative.t .. ok
t/format_number.t .... ok
t/format_picture.t ... ok
t/format_price.t ..... ok
t/locale.t ........... 1/?
# Failed test 'rubles'
# at t/locale.t line 44.
# got: '123 456,79 RUR '
# expected: '123 456,79 RUB '
# Looks like you failed 1 test of 12.
t/locale.t ........... Dubious, test returned 1 (wstat 256, 0x100)
Failed 1/12 subtests
t/object.t ........... ok
t/round.t ............ ok
t/unformat_number.t .. ok
RT for rt.cpan.org