Hi, I got this in tail

tail: unrecognized file system type 0x794c7630 for
> '/var/log/bucardo/log.bucardo'. please report this to
> bug-coreutils@gnu.org. reverting to polling


System info:

> $ cat /etc/os-release
> NAME="Ubuntu"
> VERSION="14.04.5 LTS, Trusty Tahr"
> ID=ubuntu
> ID_LIKE=debian
> PRETTY_NAME="Ubuntu 14.04.5 LTS"
> VERSION_ID="14.04"
> HOME_URL="http://www.ubuntu.com/"
> SUPPORT_URL="http://help.ubuntu.com/"
> BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"


coreutils version:

$ tail --version

> tail (GNU coreutils) 8.21
> Copyright (C) 2013 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.
> html>.
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.
> Written by Paul Rubin, David MacKenzie, Ian Lance Taylor,
> and Jim Meyering.


bucardo version 5.4.1


Best regards
Olov Pettersson