The version of python-virtualenv available in xenial-proposed runs autopkgtest without issues.
$ autopkgtest -U --apt-pocket=proposed python-virtualenv -- lxd autopkgtest/ubuntu/xenial/amd64 autopkgtest [17:50:05]: version 4.1 ... Setting up python3-virtualenv (15.0.1+ds-3ubuntu1) ... ... autopkgtest [17:52:59]: @@@@@@@@@@@@@@@@@@@@ summary smoketest-2 PASS smoketest-3 PASS setup-2 PASS setup-3 PASS
Full log: http://pastebin.ubuntu.com/23559776/
The version of python-virtualenv available in xenial-proposed runs autopkgtest without issues.
$ autopkgtest -U --apt-pocket= proposed python-virtualenv -- lxd autopkgtest/ ubuntu/ xenial/ amd64 ds-3ubuntu1) ... @@@@@@@ @@@@@@ summary
autopkgtest [17:50:05]: version 4.1
...
Setting up python3-virtualenv (15.0.1+
...
autopkgtest [17:52:59]: @@@@@@@
smoketest-2 PASS
smoketest-3 PASS
setup-2 PASS
setup-3 PASS
Full log: http:// pastebin. ubuntu. com/23559776/