workaround travis-ci's strange EOF issue
workaround travis-ci's strange EOF issue

crdoconnor/pexpect,bangi123/pexpect,dongguangming/pexpect,Wakeupbuddy/pexpect,nodish/pexpect,quatanium/pexpect,crdoconnor/pexpect,quatanium/pexpect,quatanium/pexpect,dongguangming/pexpect,nodish/pexpect,dongguangming/pexpect,bangi123/pexpect,bangi123/pexpect,nodish/pexpect,crdoconnor/pexpect,Wakeupbuddy/pexpect,bangi123/pexpect,Wakeupbuddy/pexpect,Wakeupbuddy/pexpect,dongguangming/pexpect