(root)/
util-linux-2.39/
tests/
expected/
utmp/
utmpdump-subsecond
last 9 is expected to disappear in conversion
[7] [00010] [ipv6] [IPv6    ] [root        ] [dns-server          ] [2001:503:ba3e::2:30] [2013-08-28T20:30:40,123456+00:00]
[8] [00011] [ipv6] [IPv6    ] [root        ] [dns-server          ] [2001:503:ba3e::2:30] [2013-08-28T20:40:50,999999+00:00]
[0] [00000] [ts/0] [nonvalid] [foo         ] [zero                ] [0.0.0.0        ] [2013-08-28T12:00:00,12345678+00:00]