apt-get install usermode
ln -s /usr/bin/consolehelper /usr/bin/mock
useradd -m ms
usermod -a -G mock ms
su ms -
dpkg -l yum

# ii  yum                    3.2.12-1               Advanced front-end for rpm

mock -r fedora-7-i386 --init

State Changed: running yum
ERROR: Command failed: 
 # /usr/bin/yum --installroot /var/lib/mock/fedora-7-i386/root/  install buildsys-build
ftp://ftp.applios.net/pub/fedora/linux/releases/7/Everything/i386/os/repodata/repomd.xml: [Errno 4] IOError: [Errno ftp error] 421 There are too many connected users, please try later.
Trying other mirror.
Traceback (most recent call last):
  File "/usr/bin/yum", line 29, in ?
    yummain.user_main(sys.argv[1:], exit_code=True)
  File "/usr/share/yum-cli/yummain.py", line 236, in user_main
    errcode = main(args)
  File "/usr/share/yum-cli/yummain.py", line 152, in main
    (result, resultmsgs) = base.buildTransaction() 
  File "/var/lib/python-support/python2.4/yum/__init__.py", line 626, in buildTransaction
    (rescode, restring) = self.resolveDeps()
  File "/var/lib/python-support/python2.4/yum/depsolve.py", line 663, in resolveDeps
    CheckDeps, checkinstalls, checkremoves, missing = self._resolveRequires(errors)
  File "/var/lib/python-support/python2.4/yum/depsolve.py", line 746, in _resolveRequires
    thisneeds = self._checkInstall(txmbr)
  File "/var/lib/python-support/python2.4/yum/depsolve.py", line 788, in _checkInstall
    provs = self.tsInfo.getProvides(*req)
  File "/var/lib/python-support/python2.4/yum/transactioninfo.py", line 428, in getProvides
    result = self.getOldProvides(name, flag, version)
  File "/var/lib/python-support/python2.4/yum/transactioninfo.py", line 421, in getOldProvides
    for pkg, hits in self.rpmdb.getProvides(name, flag, version).iteritems():
  File "/var/lib/python-support/python2.4/yum/rpmsack.py", line 397, in getProvides
    pkgs = self.searchProvides(name)
  File "/var/lib/python-support/python2.4/yum/rpmsack.py", line 156, in searchProvides
    return self.searchPrco(name, 'provides')
  File "/var/lib/python-support/python2.4/yum/rpmsack.py", line 139, in searchPrco
    mi = ts.dbMatch(tag, name)
TypeError: unknown key type