Comment 6 for bug 1258202

I am seeing this problem with several Ubuntu 16.04.3 LTS server installations.

considering log /var/log/btmp
error: skipping "/var/log/btmp" because parent directory has insecure permissions (It's world writable or writable by group which is not "root") Set "su" directive in config file to tell logrotate which user/group should be used for rotation.

# ll -d /var/log/
drwxrwxr-x 17 root syslog 4096 Aug 13 21:31 /var/log//