INFO buildroot.py:309:  Mock Version: 1.2.17
DEBUG util.py:97:  ensuring that dir exists: /var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/dev/pts
DEBUG util.py:100:  creating dir: /var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/dev/pts
DEBUG util.py:97:  ensuring that dir exists: /var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/dev/shm
DEBUG util.py:100:  creating dir: /var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/dev/shm
DEBUG buildroot.py:447:  kernel version == 3.10.0-693.2.2.el7.x86_64
DEBUG util.py:110:  touching file: /var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/etc/fstab
DEBUG util.py:110:  touching file: /var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/etc/yum.conf
DEBUG util.py:110:  touching file: /var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/etc/dnf.conf
DEBUG util.py:110:  touching file: /var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/var/log/yum.log
DEBUG util.py:563:  child environment: None
DEBUG util.py:495:  Executing command: ['/bin/mount', '-n', '-t', 'proc', 'proc', '/var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/proc'] with env {'LANG': 'en_GB.UTF-8', 'TERM': 'vt100', 'SHELL': '/bin/sh', 'HOSTNAME': 'mock', 'HOME': '/builddir', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin'} and shell False
DEBUG util.py:542:  Child return code was: 0
DEBUG util.py:563:  child environment: None
DEBUG util.py:495:  Executing command: ['/bin/mount', '-n', '-t', 'sysfs', 'sysfs', '/var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/sys'] with env {'LANG': 'en_GB.UTF-8', 'TERM': 'vt100', 'SHELL': '/bin/sh', 'HOSTNAME': 'mock', 'HOME': '/builddir', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin'} and shell False
DEBUG util.py:542:  Child return code was: 0
DEBUG util.py:563:  child environment: None
DEBUG util.py:495:  Executing command: ['/bin/mount', '-n', '-t', 'tmpfs', 'tmpfs', '/var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/dev/shm'] with env {'LANG': 'en_GB.UTF-8', 'TERM': 'vt100', 'SHELL': '/bin/sh', 'HOSTNAME': 'mock', 'HOME': '/builddir', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin'} and shell False
DEBUG util.py:542:  Child return code was: 0
DEBUG util.py:563:  child environment: None
DEBUG util.py:495:  Executing command: ['/bin/mount', '-n', '-t', 'devpts', '-o', 'gid=5,mode=0620,ptmxmode=0666,newinstance', 'devpts', '/var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/dev/pts'] with env {'LANG': 'en_GB.UTF-8', 'TERM': 'vt100', 'SHELL': '/bin/sh', 'HOSTNAME': 'mock', 'HOME': '/builddir', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin'} and shell False
DEBUG util.py:542:  Child return code was: 0
DEBUG util.py:563:  child environment: None
DEBUG util.py:495:  Executing command: ['/bin/mount', '-n', '--bind', '/tmp/mock-selinux-plugin.m2GTsm', '/var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/proc/filesystems'] with env {'LANG': 'en_GB.UTF-8', 'TERM': 'vt100', 'SHELL': '/bin/sh', 'HOSTNAME': 'mock', 'HOME': '/builddir', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin'} and shell False
DEBUG util.py:542:  Child return code was: 0
DEBUG buildroot.py:138:  rootdir = /var/lib/mock/c7.1708.exp.x86_64-20171219063956/root
DEBUG buildroot.py:139:  resultdir = /srv/reimzul//results/c7.1708.exp.x86_64/kernel/20171219063956/4.9.70-204.el7.centos.x86_64/
DEBUG util.py:97:  ensuring that dir exists: /var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/etc/pki/mock
DEBUG util.py:100:  creating dir: /var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/etc/pki/mock
DEBUG util.py:97:  ensuring that dir exists: /var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/etc/yum/pluginconf.d
DEBUG util.py:100:  creating dir: /var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/etc/yum/pluginconf.d
DEBUG package_manager.py:199:  configure yum
DEBUG package_manager.py:205:  configure yum priorities
DEBUG package_manager.py:207:  configure yum rhnplugin
DEBUG package_manager.py:96:  ['/usr/bin/yum', '--installroot', '/var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/', 'install', 'bash', 'bzip2', 'coreutils', 'cpio', 'diffutils', 'system-release', 'findutils', 'gawk', 'gcc', 'gcc-c++', 'grep', 'gzip', 'info', 'make', 'patch', 'redhat-rpm-config', 'rpm-build', 'sed', 'shadow-utils', 'tar', 'unzip', 'util-linux', 'which', 'xz']
DEBUG util.py:563:  child environment: None
DEBUG util.py:495:  Executing command: ['/usr/bin/yum', '--installroot', '/var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/', 'install', 'bash', 'bzip2', 'coreutils', 'cpio', 'diffutils', 'system-release', 'findutils', 'gawk', 'gcc', 'gcc-c++', 'grep', 'gzip', 'info', 'make', 'patch', 'redhat-rpm-config', 'rpm-build', 'sed', 'shadow-utils', 'tar', 'unzip', 'util-linux', 'which', 'xz', '--setopt=tsflags=nocontexts'] with env {'LANG': 'en_GB.UTF-8', 'TERM': 'vt100', 'SHELL': '/bin/bash', 'LC_MESSAGES': 'C', 'PROMPT_COMMAND': 'printf "\x1b]0;<mock-chroot>\x07<mock-chroot>"', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin', 'HOME': '/builddir', 'HOSTNAME': 'mock'} and shell False
DEBUG util.py:417:  http://localhost:11081/bstore/tmp/repo/c7.1611.exp/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found
DEBUG util.py:417:  Trying other mirror.
DEBUG util.py:417:  To address this issue please refer to the below knowledge base article 
DEBUG util.py:417:  https://access.redhat.com/articles/1320623
DEBUG util.py:417:  If above article doesn't help to resolve this issue please create a bug on https://bugs.centos.org/
DEBUG util.py:417:   One of the configured repositories failed (c7.1611.exp),
DEBUG util.py:417:   and yum doesn't have enough cached data to continue. At this point the only
DEBUG util.py:417:   safe thing yum can do is fail. There are a few ways to work "fix" this:
DEBUG util.py:417:       1. Contact the upstream for the repository and get them to fix the problem.
DEBUG util.py:417:       2. Reconfigure the baseurl/etc. for the repository, to point to a working
DEBUG util.py:417:          upstream. This is most often useful if you are using a newer
DEBUG util.py:417:          distribution release than is supported by the repository (and the
DEBUG util.py:417:          packages for the previous distribution release still work).
DEBUG util.py:417:       3. Run the command with the repository temporarily disabled
DEBUG util.py:417:              yum --disablerepo=c7.1611.exp ...
DEBUG util.py:417:       4. Disable the repository permanently, so yum won't use it by default. Yum
DEBUG util.py:417:          will then just ignore the repository until you permanently enable it
DEBUG util.py:417:          again or use --enablerepo for temporary usage:
DEBUG util.py:417:              yum-config-manager --disable c7.1611.exp
DEBUG util.py:417:          or
DEBUG util.py:417:              subscription-manager repos --disable=c7.1611.exp
DEBUG util.py:417:       5. Configure the failing repository to be skipped, if it is unavailable.
DEBUG util.py:417:          Note that yum will try to contact the repo. when it runs most commands,
DEBUG util.py:417:          so will have to try and fail each time (and thus. yum will be be much
DEBUG util.py:417:          slower). If it is a very temporary problem though, this is often a nice
DEBUG util.py:417:          compromise:
DEBUG util.py:417:              yum-config-manager --save --setopt=c7.1611.exp.skip_if_unavailable=true
DEBUG util.py:417:  failure: repodata/repomd.xml from c7.1611.exp: [Errno 256] No more mirrors to try.
DEBUG util.py:417:  http://localhost:11081/bstore/tmp/repo/c7.1611.exp/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found
DEBUG util.py:542:  Child return code was: 1
DEBUG util.py:176:  kill orphans
DEBUG util.py:563:  child environment: None
DEBUG util.py:495:  Executing command: ['/bin/umount', '-n', '/var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/proc/filesystems'] with env {'LANG': 'en_GB.UTF-8', 'TERM': 'vt100', 'SHELL': '/bin/sh', 'HOSTNAME': 'mock', 'HOME': '/builddir', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin'} and shell False
DEBUG util.py:542:  Child return code was: 0
DEBUG util.py:563:  child environment: None
DEBUG util.py:495:  Executing command: ['/bin/umount', '-n', '-l', '/var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/dev/pts'] with env {'LANG': 'en_GB.UTF-8', 'TERM': 'vt100', 'SHELL': '/bin/sh', 'HOSTNAME': 'mock', 'HOME': '/builddir', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin'} and shell False
DEBUG util.py:542:  Child return code was: 0
DEBUG util.py:563:  child environment: None
DEBUG util.py:495:  Executing command: ['/bin/umount', '-n', '-l', '/var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/dev/shm'] with env {'LANG': 'en_GB.UTF-8', 'TERM': 'vt100', 'SHELL': '/bin/sh', 'HOSTNAME': 'mock', 'HOME': '/builddir', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin'} and shell False
DEBUG util.py:542:  Child return code was: 0
DEBUG util.py:563:  child environment: None
DEBUG util.py:495:  Executing command: ['/bin/umount', '-n', '-l', '/var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/sys'] with env {'LANG': 'en_GB.UTF-8', 'TERM': 'vt100', 'SHELL': '/bin/sh', 'HOSTNAME': 'mock', 'HOME': '/builddir', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin'} and shell False
DEBUG util.py:542:  Child return code was: 0
DEBUG util.py:563:  child environment: None
DEBUG util.py:495:  Executing command: ['/bin/umount', '-n', '-l', '/var/lib/mock/c7.1708.exp.x86_64-20171219063956/root/proc'] with env {'LANG': 'en_GB.UTF-8', 'TERM': 'vt100', 'SHELL': '/bin/sh', 'HOSTNAME': 'mock', 'HOME': '/builddir', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin'} and shell False
DEBUG util.py:542:  Child return code was: 0
DEBUG util.py:563:  child environment: None
DEBUG util.py:495:  Executing command: ['btrfs', 'subv', 'list', '/var/lib/mock'] with env {'LANG': 'en_GB.UTF-8', 'TERM': 'vt100', 'SHELL': '/bin/sh', 'HOSTNAME': 'mock', 'HOME': '/builddir', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin'} and shell False
DEBUG util.py:417:  ERROR: not a btrfs filesystem: /var/lib/mock
DEBUG util.py:417:  ERROR: can't access '/var/lib/mock'
DEBUG util.py:542:  Child return code was: 1
DEBUG util.py:1179:  Please ignore the error above above about btrfs.