Getting "Using the default of SSL_verify_mode of SSL_VERIFY_NONE" message when running innobackupex on CentOS 7

Getting "Using the default of SSL_verify_mode of SSL_VERIFY_NONE" message when running innobackupex on CentOS 7

[root@centos7 ~]# innobackupex --user=root /tmp/
160316 10:05:30 innobackupex: Starting the backup operation

IMPORTANT: Please check that the backup run completes successfully.
           At the end of a successful backup run innobackupex
           prints "completed OK!".

160316 10:05:30 version_check Connecting to MySQL server with DSN 'dbi:mysql:;mysql_read_default_group=xtrabackup;mysql_socket=/var/lib/mysql/mysql.sock' as 'root' (using password: NO).
160316 10:05:31 version_check Connected to MySQL server
160316 10:05:31 version_check Executing a version check against the server...
*******************************************************************
 Using the default of SSL_verify_mode of SSL_VERIFY_NONE for client
 is deprecated! Please set SSL_verify_mode to SSL_VERIFY_PEER
 together with SSL_ca_file|SSL_ca_path for verification.
 If you really don't want to verify the certificate and keep the
 connection open to Man-In-The-Middle attacks please set
 SSL_verify_mode explicitly to SSL_VERIFY_NONE in your application.
*******************************************************************
  at - line 237.
*******************************************************************
 Using the default of SSL_verify_mode of SSL_VERIFY_NONE for client
 is deprecated! Please set SSL_verify_mode to SSL_VERIFY_PEER
 together with SSL_ca_file|SSL_ca_path for verification.
 If you really don't want to verify the certificate and keep the
 connection open to Man-In-The-Middle attacks please set
 SSL_verify_mode explicitly to SSL_VERIFY_NONE in your application.
*******************************************************************
  at - line 237.
160316 10:05:32 version_check Done.
160316 10:05:32 Connecting to MySQL server host: localhost, user: root, password: not set, port: 0, socket: /var/lib/mysql/mysql.sock
Using server version 5.6.29-76.2
innobackupex version 2.3.4 based on MySQL server 5.6.24 Linux (x86_64) (revision id: e80c779)
...

[root@centos7 ~]# innobackupex --version
innobackupex version 2.3.4 Linux (x86_64) (revision id: e80c779)
[root@centos7 ~]# xtrabackup --version
xtrabackup version 2.3.4 based on MySQL server 5.6.24 Linux (x86_64) (revision id: e80c779)