cbcollect_info doesn't gather stats info

out put shows:
[root@localhost bin]# ./cbcollect_info inf.zip
uname (uname -a) - OK
Directory structure (ls -lR '/opt/couchbase' /opt/membase /var/membase /etc/opt/membase) - Exit code 2
Database directory structure (ls -lR ) - OK
Directory structure membase - previous versions (ls -lR /opt/membase /var/membase /var/opt/membase /etc/opt/membase) - Exit code 2
Process list snapshot (top -H -n 1) - OK
Process list (ps -AwwL -o user,pid,lwp,ppid,nlwp,pcpu,pri,nice,vsize,rss,tty,stat,wchan:12,start,bsdtime,command) - OK
Swap configuration (free -t) - OK
Swap configuration (swapon -s) - OK
Kernel modules (lsmod) - OK
Distro version (cat /etc/redhat-release) - OK
Distro version (lsb_release -a) - OK
Installed software (rpm -qa) - OK
Installed software (COLUMNS=300 dpkg -l) - Exit code 127
Extended iostat (iostat -x -p ALL 1 10 || iostat -x 1 10) - Exit code 127
Process usage (export TERM=linux; top -b -n1 | egrep 'moxi|memcached|vbucketmigrator|CPU|load|Mem:|Swap:|Cpu(s)') - OK
Core dump settings (find /proc/sys/kernel -type f -name 'core' -print -exec cat '{}' ';') - OK
netstat -nap (netstat -nap) - OK
relevant lsof output (lsof -n | grep 'moxi|memcached|vbucketmigrator|beam') - OK
Network configuration (ifconfig -a) - OK
Taking sample 2 after 10.000000 seconds -
OK
Network status (netstat -an) - OK
Network routing table (netstat -rn) - OK
Arp cache (arp -na) - OK
Filesystem (df -ha) - OK
System activity reporter (sar 1 10) - Exit code 127
System paging activity (vmstat 1 10) - OK
System uptime (uptime) - OK
couchbase user definition (getent passwd couchbase) - OK
couchbase user limits (su couchbase -c "ulimit -a") - OK
membase user definition (getent passwd membase) - Exit code 2
couchbase user limits (su couchbase -c "ulimit -a") - OK
membase user limits (su membase -c "ulimit -a") - Exit code 1
Interrupt status (intrstat 1 10) - Exit code 127
Processor status (mpstat 1 10) - Exit code 127
System log (cat /var/adm/messages) - Exit code 1
System log (cat /var/log/syslog) - Exit code 1
System log (cat /var/log/messages) - OK
Version file (cat '/opt/couchbase/VERSION.txt') - OK
Manifest file (cat '/opt/couchbase/manifest.txt') - OK
Manifest file (cat '/opt/couchbase/manifest.xml') - OK
Memcached logs (cat '/opt/couchbase'/var/lib/couchbase/logs/memcached.log.*) - OK
Kernel log buffer (dmesg) - OK
couchbase config (./cbdump-config '/opt/couchbase/var/lib/couchbase/config/config.dat') - OK
couchbase logs (debug) (cbbrowse_logs) - OK
couchbase logs (info) (cbbrowse_logs info) - OK
couchbase logs (error) (cbbrowse_logs error) - OK
couchbase logs (couchdb) (cbbrowse_logs couchdb) - OK
couchbase logs (xdcr) (cbbrowse_logs xdcr) - OK
couchbase logs (xdcr_errors) (cbbrowse_logs xdcr_errors) - OK
couchbase logs (views) (cbbrowse_logs views) - OK
couchbase logs (mapreduce errors) (cbbrowse_logs mapreduce_errors) - OK
couchbase logs (stats) (cbbrowse_logs stats) - OK
memcached stats all (cbstats -a 127.0.0.1:11210 all -b _admin -p _admin) - OK
memcached stats checkpoint (cbstats -a 127.0.0.1:11210 checkpoint -b _admin -p _admin) - OK
memcached stats dispatcher (cbstats -a 127.0.0.1:11210 dispatcher logs -b _admin -p _admin) - OK
memcached stats hash (cbstats -a 127.0.0.1:11210 hash detail -b _admin -p _admin) - OK
memcached stats tap (cbstats -a 127.0.0.1:11210 tap -b _admin -p _admin) - OK
memcached stats tapagg (cbstats -a 127.0.0.1:11210 tapagg -b _admin -p _admin) - OK
memcached stats timings (cbstats -a 127.0.0.1:11210 timings -b _admin -p _admin) - OK
memcached memory stats (cbstats -a 127.0.0.1:11210 raw memory -b _admin -p _admin) - OK
memcached allocator stats (cbstats -a 127.0.0.1:11210 raw allocator -b _admin -p _admin) - OK
couchbase diags (curl -sS "http://Administrator:password@127.0.0.1:8091/diag?noLogs=1") - OK

stats log show:
==============================================================================
memcached stats all
cbstats -a 127.0.0.1:11210 all -b _admin -p _admin
==============================================================================
==============================================================================
memcached stats checkpoint
cbstats -a 127.0.0.1:11210 checkpoint -b _admin -p _admin
==============================================================================
==============================================================================
memcached stats dispatcher
cbstats -a 127.0.0.1:11210 dispatcher logs -b _admin -p _admin
==============================================================================
==============================================================================
memcached stats hash
cbstats -a 127.0.0.1:11210 hash detail -b _admin -p _admin
==============================================================================
==============================================================================
memcached stats tap
cbstats -a 127.0.0.1:11210 tap -b _admin -p _admin
==============================================================================
==============================================================================
memcached stats tapagg
cbstats -a 127.0.0.1:11210 tapagg -b _admin -p _admin
==============================================================================
==============================================================================
memcached stats timings
cbstats -a 127.0.0.1:11210 timings -b _admin -p _admin
==============================================================================
==============================================================================
memcached memory stats
cbstats -a 127.0.0.1:11210 raw memory -b _admin -p _admin
==============================================================================
==============================================================================
memcached allocator stats
cbstats -a 127.0.0.1:11210 raw allocator -b _admin -p _admin
==============================================================================