I was able once (1!) to reproduce outside of launchpad by using the
following steps to become more like launchpad:

# Prep needed packages                                                          
    
  $ sudo apt-get install sbuild ubuntu-dev-tools                                
    
                                                                                
    
# misuse a mk-sbuild to set up all around that might be needed (despite 
throwing most away afterwards)
  $ SID=LP-zesty-repro                                                          
    
  $ mk-sbuild zesty --arch amd64 --name=${SID}                                  
    
# replace content with the tarball from launchpad                               
    
  $ sudo rm -rf /var/lib/schroot/chroots/${SID}-amd64/*                         
    
# launchpad tells you where to get the original chroot used by LP 
(https://api.launchpad.net/devel/ubuntu/zesty/amd64)
# get it and replace the local chroot content with it                           
    
  $ wget 
http://launchpadlibrarian.net/289945545/chroot-ubuntu-zesty-amd64.tar.bz2
  $ sudo tar --directory /var/lib/schroot/chroots/${SID}-amd64/ -xzf 
~/Downloads/chroot-ubuntu-zesty-amd64.tar.bz2
  $ sudo mv /var/lib/schroot/chroots/${SID}-amd64/chroot-autobuild/* 
/var/lib/schroot/chroots/${SID}-amd64/
  $ sudo rmdir /var/lib/schroot/chroots/${SID}-amd64/chroot-autobuild           
 
# Update to all packages and proposed as build env would                        
    
  $ printf "deb http://archive.ubuntu.com/ubuntu zesty main universe\ndeb 
http://archive.ubuntu.com/ubuntu zesty-security main universe\ndeb 
http://archive.ubuntu.com/ubu
  $ sudo sbuild-update -udcar ${SID}-amd64                                      
    
# build as usual (this env sticks around so feel free to reuse)                 
    
  $ DEB_BUILD_OPTIONS="parallel=4" sbuild -Ad${SID}-amd64 
libvirt_2.1.0-1ubuntu10.dsc


Unfortunately that only triggered once, and retrying is hard as it either takes 
quite a while (full build) or behaves slightly differently when e.g. only 
running all tests but not rebuilding in the schroot.

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https://bugs.launchpad.net/bugs/1641615

Title:
  FTBFS of libvirt 2.1 in zesty

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