GLOB sdist-make: /tmp/tmps43wuape/Cuckoo-2.0.7a1/setup.py
ERROR: invocation failed (exit code 1), logfile: /tmp/tmps43wuape/Cuckoo-2.0.7a1/.tox/log/GLOB-0.log
================================== log start ===================================
Cuckoo is Python2-only at the moment! Please use Python 2 to install it, i.e., `pip2 install -U cuckoo`.

=================================== log end ====================================
ERROR: FAIL could not package project - v = InvocationError('/home/travis/virtualenv/python3.6.7/bin/python setup.py sdist --formats=zip --dist-dir /tmp/tmps43wuape/Cuckoo-2.0.7a1/.tox/dist', 1)


Time: 12.0 seconds