Suricata

When starting Suricata in lxc on one of my servers I got the following error:

<Error> - [ERRCODE: SC_ERR_MISSING_CONFIG_PARAM(118)] - NO logging compatible with daemon mode selected, suricata won't be able to log. Please update 'logging.outputs' in the YAML.
<Notice> - This is Suricata version 2.1beta4 RELEASE

It's is especially confusing because on another server the same configuration works just fine.

/etc/default/suricata:
RUN=yes
RUN_AS_USER=
SURCONF=/etc/suricata/suricata.yaml
LISTENMODE=af-packet
IFACE=eth0
NFQUEUE=0
TCMALLOC="YES"
PIDFILE=/run/suricata.pid

/etc/suricata/suricata.yaml:
outputs:

1. a line based alerts log similar to Snort's fast.log
   - fast:
   enabled: yes
   filename: fast.log
   append: yes
   #filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'

1. Extensible Event Format (nicknamed EVE) event log in JSON format
   - eve-log:
   enabled: yes

Where can I read more about logging compatibility with daemon mode (and why it's related in a first place?)