# call args: ['ssh','-s','-S','/home/user/.libnet-openssh-perl/user-host-31054-27407','-l','user','host','--','xmlagent']
# open_ex: ['ssh','-s','-S','/home/user/.libnet-openssh-perl/user-host-31054-27407','-l','user','host','--','xmlagent']
# call args: ['ssh','-S','/home/user/.libnet-openssh-perl/user-host-31054-27407','-l','user','host','--']
# open_ex: ['ssh','-S','/home/user/.libnet-openssh-perl/user-host-31054-27407','-l','user','host','--']
Pseudo-terminal will not be allocated because stdin is not a terminal.
stty: standard input: Invalid argument