-3.fc29.noarch requires python3-sphinx >= 1.2.3, but none of the providers can be installed
DEBUG util.py:554:  BUILDSTDERR:   - conflicting requests
DEBUG util.py:554:  BUILDSTDERR:   - nothing provides python3.7dist(sphinxcontrib-applehelp) needed by python3-sphinx-1:2.1.2-1.fc31.noarch
DEBUG util.py:554:  BUILDSTDERR:   - nothing provides python3.7dist(sphinxcontrib-devhelp) needed by python3-sphinx-1:2.1.2-1.fc31.noarch
DEBUG util.py:554:  BUILDSTDERR:   - nothing provides python3.7dist(sphinxcontrib-htmlhelp) needed by python3-sphinx-1:2.1.2-1.fc31.noarch
DEBUG util.py:554:  BUILDSTDERR:   - nothing provides python3.7dist(sphinxcontrib-jsmath) needed by python3-sphinx-1:2.1.2-1.fc31.noarch
DEBUG util.py:554:  BUILDSTDERR:   - nothing provides python3.7dist(sphinxcontrib-qthelp) needed by python3-sphinx-1:2.1.2-1.fc31.noarch
DEBUG util.py:554:  BUILDSTDERR:   - nothing provides python3.7dist(sphinxcontrib-serializinghtml) needed by python3-sphinx-1:2.1.2-1.fc31.noarch
DEBUG util.py:554:  BUILDSTDERR:  Problem 3: package python3-ipython-sphinx-7.6.1-1.fc31.noarch requires python3-sphinx, but none of the providers can be installed
DEBUG util.py:554:  BUILDSTDERR:   - conflicting requests
DEBUG util.py:554:  BUILDSTDERR:   - nothing provides python3.7dist(sphinxcontrib-applehelp) needed by python3-sphinx-1:2.1.2-1.fc31.noarch
DEBUG util.py:554:  BUILDSTDERR:   - nothing provides python3.7dist(sphinxcontrib-devhelp) needed by python3-sphinx-1:2.1.2-1.fc31.noarch
DEBUG util.py:554:  BUILDSTDERR:   - nothing provides python3.7dist(sphinxcontrib-htmlhelp) needed by python3-sphinx-1:2.1.2-1.fc31.noarch
DEBUG util.py:554:  BUILDSTDERR:   - nothing provides python3.7dist(sphinxcontrib-jsmath) needed by python3-sphinx-1:2.1.2-1.fc31.noarch
DEBUG util.py:554:  BUILDSTDERR:   - nothing provides python3.7dist(sphinxcontrib-qthelp) needed by python3-sphinx-1:2.1.2-1.fc31.noarch
DEBUG util.py:554:  BUILDSTDERR:   - nothing provides python3.7dist(sphinxcontrib-serializinghtml) needed by python3-sphinx-1:2.1.2-1.fc31.noarch
DEBUG util.py:698:  Child return code was: 1
DEBUG util.py:292:  kill orphans
DEBUG util.py:717:  child environment: None
DEBUG util.py:643:  Executing command: ['/bin/umount', '-n', '/var/lib/mock/f31-build-47485-26834/root/proc/filesystems'] 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:698:  Child return code was: 0
DEBUG util.py:717:  child environment: None
DEBUG util.py:643:  Executing command: ['/bin/umount', '-n', '-l', '/var/lib/mock/f31-build-47485-26834/root/dev/pts'] 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:698:  Child return code was: 0
DEBUG util.py:717:  child environment: None
DEBUG util.py:643:  Executing command: ['/bin/umount', '-n', '-l', '/var/lib/mock/f31-build-47485-26834/root/dev/shm'] 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:698:  Child return code was: 0
DEBUG util.py:717:  child environment: None
DEBUG util.py:643:  Executing command: ['/bin/umount', '-n', '-l', '/var/lib/mock/f31-build-47485-26834/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:698:  Child return code was: 0
DEBUG util.py:717:  child environment: None
DEBUG util.py:643:  Executing command: ['/bin/umount', '-n', '-l', '/var/lib/mock/f31-build-47485-26834/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:698:  Child return code was: 0