Build failed in Jenkins: libvirt-python-build » libvirt-centos-7 #1144

See <https://ci.centos.org/job/libvirt-python-build/systems=libvirt-centos-7/1144/display/redirect>

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Started by upstream project "libvirt-python-build" build number 1144
originally caused by:
 Started by upstream project "libvirt-build" build number 1314
 originally caused by:
  Started by an SCM change
Running as SYSTEM
[EnvInject] - Loading node environment variables.
Building remotely on libvirt-centos-7 (libvirt) in workspace <https://ci.centos.org/job/libvirt-python-build/systems=libvirt-centos-7/ws/>
No credentials specified
 > git rev-parse --is-inside-work-tree # timeout=10
Fetching changes from the remote Git repository
 > git config remote.origin.url https://github.com/libvirt/libvirt-python.git # timeout=10
Fetching upstream changes from https://github.com/libvirt/libvirt-python.git
 > git --version # timeout=10
 > git fetch --tags --progress https://github.com/libvirt/libvirt-python.git +refs/heads/*:refs/remotes/origin/*
Checking out Revision 85c5243497e6f464dc375828ca28a899ec9a1930 (refs/remotes/origin/master)
 > git config core.sparsecheckout # timeout=10
 > git checkout -f 85c5243497e6f464dc375828ca28a899ec9a1930
Commit message: "Release of libvirt-python 6.2.0"
 > git rev-list --no-walk 85c5243497e6f464dc375828ca28a899ec9a1930 # timeout=10
Cleaning workspace
 > git rev-parse --verify HEAD # timeout=10
Resetting working tree
 > git reset --hard # timeout=10
 > git clean -fdx # timeout=10
[libvirt-python] $ /bin/sh -xe /tmp/jenkins12767197519448055231.sh
+ python2 ./setup.py build
libvirt-python requires Python 3.x to build
Build step 'Execute shell' marked build as failure