Comment 5 for bug 1395133

I also got the same error message trying to create a disk image, diskimage-builder/bin/disk-image-create vm with heat-config-*.
Yes, I am behind a proxy with http_proxy and https_proxy set properly - I can run apt-get update, wget or curl to external site without any issue. What is so special about oslo.i18n that it could not find any downloads while it has no problem with other packages? Please let us know if anyone finds a fix for this. Thank you.