https://launchpad.net/~build.snapcraft.io/+snap/b41db31aff864be28e562456e46200b6/+build/1199701
RUN: /usr/share/launchpad-buildd/bin/builder-prep 
Kernel version: Linux bos02-s390x-010 4.15.0-118-generic #119-Ubuntu SMP Tue Sep 8 12:18:21 UTC 2020 s390x
Buildd toolchain package versions: launchpad-buildd_191~460~ubuntu18.04.1 python3-lpbuildd_191~460~ubuntu18.04.1 sbuild_0.75.0-1ubuntu1 bzr-builder_0.7.3+bzr174~ppa13~ubuntu16.04.1 bzr_2.7.0+bzr6622-10 git-build-recipe_0.3.6~git201906051340.ff11471~ubuntu18.04.1 git_1:2.17.1-1ubuntu0.7 dpkg-dev_1.19.0.5ubuntu2.3 python-debian_0.1.32 python3-debian_0.1.32.
Syncing the system clock with the buildd NTP service...
30 Nov 18:52:02 ntpdate[1733]: adjust time server 10.211.37.1 offset -0.000205 sec
RUN: /usr/share/launchpad-buildd/bin/in-target unpack-chroot --backend=lxd --series=bionic --arch=s390x SNAPBUILD-1199701 --image-type lxd /home/buildd/filecache-default/6a723b8521a621bccdb7d2b5fd411c373acb5c45
Creating target for build SNAPBUILD-1199701
To start your first container, try: lxc launch ubuntu:18.04

RUN: /usr/share/launchpad-buildd/bin/in-target mount-chroot --backend=lxd --series=bionic --arch=s390x SNAPBUILD-1199701
Starting target for build SNAPBUILD-1199701
RUN: /usr/share/launchpad-buildd/bin/in-target scan-for-processes --backend=lxd --series=bionic --arch=s390x SNAPBUILD-1199701
/usr/lib/python3/dist-packages/pylxd/models/_model.py:116: UserWarning: Attempted to set unknown attribute "location" on instance of "Container"
  key, self.__class__.__name__
Scanning for processes to kill in build SNAPBUILD-1199701
/usr/lib/python3/dist-packages/pylxd/models/_model.py:116: UserWarning: Attempted to set unknown attribute "location" on instance of "Container"
  key, self.__class__.__name__