/dev/loop0 mapping to /var/tmp/imgcreate-BKf6Tx/tmp-H_urV2/Fedora-Developer-Rawhide-20180801.n.0-sda.raw
DEBUG util.py:482:  BUILDSTDERR: Formatting disks
DEBUG util.py:482:  BUILDSTDERR: Initializing partition table for /dev/loop0 with msdos layout
DEBUG util.py:482:  BUILDSTDERR: Assigning partitions to disks
DEBUG util.py:482:  BUILDSTDERR: Assigned / to sda1 at 1 at size 6144
DEBUG util.py:482:  BUILDSTDERR: Creating partitions
DEBUG util.py:482:  BUILDSTDERR: Add primary part at 1 of size 6144
DEBUG util.py:482:  BUILDSTDERR: Dev loop0p1: /dev/loop01 -> /dev/mapper/loop0p1
DEBUG util.py:482:  BUILDSTDERR: Creating symlink from /dev/loop01 to /dev/mapper/loop0p1
DEBUG util.py:482:  BUILDSTDERR: Adding partx mapping for /dev/loop0
DEBUG util.py:482:  BUILDSTDERR: Formating ext4 filesystem on /dev/loop01
DEBUG util.py:482:  BUILDSTDERR: Formating args: ['mkfs.ext4', '-F', '-L', '_/', '-m', '1', '-b', '4096', u'/dev/loop01']
DEBUG util.py:482:  BUILDSTDERR: mke2fs 1.44.3 (10-July-2018)
DEBUG util.py:482:  BUILDSTDERR: Discarding device blocks:    4096/1499904               done                            
DEBUG util.py:482:  BUILDSTDERR: Creating filesystem with 1499904 4k blocks and 375360 inodes
DEBUG util.py:482:  BUILDSTDERR: Filesystem UUID: eefb843f-5803-4559-a311-a37e22601e85
DEBUG util.py:482:  BUILDSTDERR: Superblock backups stored on blocks: 
DEBUG util.py:482:  BUILDSTDERR: 	32768, 98304, 163840, 229376, 294912, 819200, 884736
DEBUG util.py:482:  BUILDSTDERR: Allocating group tables:  0/46     done                            
DEBUG util.py:482:  BUILDSTDERR: Writing inode tables:  0/46     done                            
DEBUG util.py:482:  BUILDSTDERR: Creating journal (16384 blocks): done
DEBUG util.py:482:  BUILDSTDERR: Writing superblocks and filesystem accounting information:  0/46     done
DEBUG util.py:482:  BUILDSTDERR: Tuning filesystem on /dev/loop01
DEBUG util.py:482:  BUILDSTDERR: tune2fs 1.44.3 (10-July-2018)
DEBUG util.py:482:  BUILDSTDERR: Setting maximal mount count to -1
DEBUG util.py:482:  BUILDSTDERR: Setting interval between checks to 0 seconds
DEBUG util.py:482:  BUILDSTDERR: Mounting /dev/loop01 at /var/tmp/imgcreate-BKf6Tx/install_root/
DEBUG util.py:482:  BUILDSTDERR: Writing mkinitrd config /var/tmp/imgcreate-BKf6Tx/install_root/etc/sysconfig/mkinitrd
DEBUG util.py:482:  BUILDSTDERR: Skipping (/sys/fs/selinux,/sys/fs/selinux) because source doesn't exist.
DEBUG util.py:482:  BUILDSTDERR: Unknown configuration option: failovermethod = priority in /var/tmp/imgcreate-BKf6Tx/dnf.conf-X3H0Qz
DEBUG util.py:482:  BUILDSTDERR: terminate called after throwing an instance of 'libdnf::Option::ValueNotSet'
DEBUG util.py:482:  BUILDSTDERR:   what():  GetValue(): Value not set
DEBUG util.py:624:  Child return code was: -6
DEBUG util.py:223:  kill orphans
DEBUG util.py:642:  child environment: None
DEBUG util.py:569:  Executing command: ['/bin/umount', '-n', '/var/lib/mock/f29-build-21895-11428/root/dev'] with env {'TERM': 'vt100', 'SHELL': '/bin/sh', 'HOME': '/builddir', 'HOSTNAME': 'mock', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin', 'LANG': 'en_US.UTF-8'} and shell False
DEBUG util.py:624:  Child return code was: 0
DEBUG util.py:642:  child environment: None
DEBUG util.py:569:  Executing command: ['/bin/umount', '-n', '-l', '/var/lib/mock/f29-build-21895-11428/root/sys'] with env {'TERM': 'vt100', 'SHELL': '/bin/sh', 'HOME': '/builddir', 'HOSTNAME': 'mock', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin', 'LANG': 'en_US.UTF-8'} and shell False
DEBUG util.py:624:  Child return code was: 0
DEBUG util.py:642:  child environment: None
DEBUG util.py:569:  Executing command: ['/bin/umount', '-n', '-l', '/var/lib/mock/f29-build-21895-11428/root/proc'] with env {'TERM': 'vt100', 'SHELL': '/bin/sh', 'HOME': '/builddir', 'HOSTNAME': 'mock', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin', 'LANG': 'en_US.UTF-8'} and shell False
DEBUG util.py:624:  Child return code was: 0