Failed to set permissions on the temporary files Ansible needs to create when becoming an unprivileged user

Failed to set permissions on the temporary files Ansible needs to create when becoming an unprivileged user とか言われた場合、ドキュメントには pipelining すればいいと書かかれているようです。

http://docs.ansible.com/ansible/become.html#becoming-an-unprivileged-user

ということで ansible.cfg に下記を追加すればいいんじゃないかな

[ssh_connection]
pipelining = true

おしまい