mock problems on f10

[Lucian Langa]

Hello,
I'm having trouble building anything with mock
(mock-0.9.13-1.fc10.noarch) for fedora-rawhide-x86_64.
The error I'm getting is: rpmdb: Program version 4.5 doesn't match
environment version 4.7
This happens even if I do a complete cleanup and reinit.

wiping __db* from chroot, rebuilddb locally:

rpmdb --dbpath /var/lib/mock/fedora-rawhide-x86_64/root/var/lib/rpm/
--rebuilddb


 seems to work but as soon as trying to rebuild any package won't work:

 mock -r fedora-devel-x86_64
rebuild /root/rpmbuild/SRPMS/soundmodem-0.10-6.fc10.src.rpm --no-clean
INFO: mock.py version 0.9.13 starting...
State Changed: init plugins
State Changed: start
INFO: Start(/root/rpmbuild/SRPMS/soundmodem-0.10-6.fc10.src.rpm)
Config(fedora-rawhide-x86_64)
State Changed: init
State Changed: lock buildroot
INFO: enabled root cache
INFO: enabled yum cache
State Changed: cleaning yum metadata
INFO: enabled ccache
State Changed: running yum
State Changed: setup
ERROR: Exception(/root/rpmbuild/SRPMS/soundmodem-0.10-6.fc10.src.rpm)
Config(fedora-rawhide-x86_64) 0 minutes 8 seconds
INFO: Results and/or logs
in: /var/lib/mock//fedora-rawhide-x86_64/result
ERROR: Command failed: 
 # /usr/bin/yum --installroot /var/lib/mock/fedora-rawhide-x86_64/root/
resolvedep  ccache  'gtk+-devel' 'automake' 'libxml-devel'
'audiofile-devel' 'autoconf' 'alsa-lib-devel' 'gettext-devel'
rpmdb: Program version 4.5 doesn't match environment version 4.7
error: db4 error(-30972) from dbenv->open: DB_VERSION_MISMATCH: Database
environment version mismatch
error: cannot open Packages index using db3 -  (-30972)
error: cannot open Packages database
in /var/lib/mock/fedora-rawhide-x86_64/root/var/lib/rpm
Traceback (most recent call last):
  File "/usr/bin/yum", line 29, in <module>
    yummain.user_main(sys.argv[1:], exit_code=True)
  File "/usr/share/yum-cli/yummain.py", line 229, in user_main
    errcode = main(args)
  File "/usr/share/yum-cli/yummain.py", line 84, in main
    base.getOptionsConfig(args)
  File "/usr/share/yum-cli/cli.py", line 184, in getOptionsConfig
    enabled_plugins=self.optparser._splitArg(opts.enableplugins))
  File "/usr/lib/python2.5/site-packages/yum/__init__.py", line 192, in
_getConfig
    self._conf = config.readMainConfig(startupconf)
  File "/usr/lib/python2.5/site-packages/yum/config.py", line 774, in
readMainConfig
    yumvars['releasever'] = _getsysver(startupconf.installroot,
startupconf.distroverpkg)
  File "/usr/lib/python2.5/site-packages/yum/config.py", line 844, in
_getsysver
    idx = ts.dbMatch('provides', distroverpkg)
TypeError: rpmdb open failed


Thanks,
--lucian