I stuck bzr-svn 1.0.3 into my ~/.bazaar/plugins, and now it works, although I now get this warning output:

$ bzr get http://svn.macosforge.org/repository/calendarserver/CalendarServer/trunk
inconsistent details in skipped record: ('3380@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fmethod%2Fdelete_common.py', 'washort@blackswan-20090716003640-zb3ugx0ozh7ikwo0') ('1482273 2859 0 10870', ((('3380@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fmethod%2Fdelete_common.py', 'svn-v4:e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer/trunk:4393'),),)) ('1699107 2859 0 10870', ((('3380@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fmethod%2Fdelete_common.py', 'washort@blackswan-20090709234859-zxvlist9u64c9woj'),),))
inconsistent details in skipped record: ('2151@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fmethod%2Fget.py', 'washort@blackswan-20090716003640-zb3ugx0ozh7ikwo0') ('1486915 1203 0 2730', ((('2151@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fmethod%2Fget.py', 'svn-v4:e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer/trunk:3494'),),)) ('1703749 1203 0 2730', ((('2151@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fmethod%2Fget.py', 'washort@blackswan-20090709234859-zxvlist9u64c9woj'),),))
inconsistent details in skipped record: ('2@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fmethod%2Freport_calquery.py', 'washort@blackswan-20090716003640-zb3ugx0ozh7ikwo0') ('1500590 3222 0 11104', ((('2@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fmethod%2Freport_calquery.py', 'svn-v4:e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer/trunk:4362'),),)) ('1717373 3222 0 11104', ((('2@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fmethod%2Freport_calquery.py', 'washort@blackswan-20090709234859-zxvlist9u64c9woj'),),))
inconsistent details in skipped record: ('2303@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fmethod%2Fpropfind.py', 'washort@blackswan-20090716003640-zb3ugx0ozh7ikwo0') ('1505319 2662 0 7717', ((('2303@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fmethod%2Fpropfind.py', 'svn-v4:e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer/trunk:4362'),),)) ('1722102 2662 0 7717', ((('2303@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fmethod%2Fpropfind.py', 'washort@blackswan-20090709234859-zxvlist9u64c9woj'),),))
inconsistent details in skipped record: ('2880@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fscheduling%2Fimplicit.py', 'washort@blackswan-20090716003640-zb3ugx0ozh7ikwo0') ('1523376 8119 0 38617', ((('2880@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fscheduling%2Fimplicit.py', 'svn-v4:e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer/trunk:4426'),),)) ('1739634 8119 0 38617', ((('2880@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fscheduling%2Fimplicit.py', 'washort@blackswan-20090709234859-zxvlist9u64c9woj'),),))
inconsistent details in skipped record: ('2880@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fscheduling%2Fscheduler.py', 'washort@blackswan-20090716003640-zb3ugx0ozh7ikwo0') ('1539317 8221 0 44231', ((('2880@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fscheduling%2Fscheduler.py', 'svn-v4:e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer/trunk:4430'),),)) ('1755575 8221 0 44231', ((('2880@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fscheduling%2Fscheduler.py', 'washort@blackswan-20090709234859-zxvlist9u64c9woj'),),))
inconsistent details in skipped record: ('4393@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fscheduling%2Futils.py', 'washort@blackswan-20090716003640-zb3ugx0ozh7ikwo0') ('1547538 1025 0 2366', ((('4393@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fscheduling%2Futils.py', 'svn-v4:e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer/trunk:4393'),),)) ('1763796 1025 0 2366', ((('4393@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fscheduling%2Futils.py', 'washort@blackswan-20090709234859-zxvlist9u64c9woj'),),))
inconsistent details in skipped record: ('2@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fcaldavxml.py', 'washort@blackswan-20090716003640-zb3ugx0ozh7ikwo0') ('1602161 12553 0 65199', ((('2@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fcaldavxml.py', 'svn-v4:e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer/trunk:4432'),),)) ('1817741 12553 0 65199', ((('2@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fcaldavxml.py', 'washort@blackswan-20090709234859-zxvlist9u64c9woj'),),))
inconsistent details in skipped record: ('637@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fdirectory%2Ftest%2Ftest_principal.py', 'washort@blackswan-20090716003640-zb3ugx0ozh7ikwo0') ('1614714 4172 0 24427', ((('637@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fdirectory%2Ftest%2Ftest_principal.py', 'svn-v4:e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer/trunk:4240'),),)) ('1830294 4172 0 24427', ((('637@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fdirectory%2Ftest%2Ftest_principal.py', 'washort@blackswan-20090709234859-zxvlist9u64c9woj'),),))
inconsistent details in skipped record: ('724@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fdirectory%2Fcalendar.py', 'washort@blackswan-20090716003640-zb3ugx0ozh7ikwo0') ('1622463 3438 0 14039', ((('724@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fdirectory%2Fcalendar.py', 'svn-v4:e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer/trunk:4010'),),)) ('1838033 3438 0 14039', ((('724@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fdirectory%2Fcalendar.py', 'washort@blackswan-20090709234859-zxvlist9u64c9woj'),),))
inconsistent details in skipped record: ('637@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fdirectory%2Fprincipal.py', 'washort@blackswan-20090716003640-zb3ugx0ozh7ikwo0') ('1627610 7638 0 33730', ((('637@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fdirectory%2Fprincipal.py', 'svn-v4:e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer/trunk:4216'),),)) ('1843180 7638 0 33730', ((('637@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fdirectory%2Fprincipal.py', 'washort@blackswan-20090709234859-zxvlist9u64c9woj'),),))
inconsistent details in skipped record: ('4034@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fmemcacheprops.py', 'washort@blackswan-20090716003640-zb3ugx0ozh7ikwo0') ('1651613 3143 0 11603', ((('4034@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fmemcacheprops.py', 'svn-v4:e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer/trunk:4159'),),)) ('1867183 3143 0 11603', ((('4034@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fmemcacheprops.py', 'washort@blackswan-20090709234859-zxvlist9u64c9woj'),),))
inconsistent details in skipped record: ('2@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fresource.py', 'washort@blackswan-20090716003640-zb3ugx0ozh7ikwo0') ('1654756 8369 0 39294', ((('2@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fresource.py', 'svn-v4:e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer/trunk:4359'),),)) ('1870326 8369 0 39294', ((('2@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fresource.py', 'washort@blackswan-20090709234859-zxvlist9u64c9woj'),),))
inconsistent details in skipped record: ('4159@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Ftest%2Ftest_memcacheprops.py', 'washort@blackswan-20090716003640-zb3ugx0ozh7ikwo0') ('1667002 1632 0 7053', ((('4159@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Ftest%2Ftest_memcacheprops.py', 'svn-v4:e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer/trunk:4412'),),)) ('1882572 1632 0 7053', ((('4159@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Ftest%2Ftest_memcacheprops.py', 'washort@blackswan-20090709234859-zxvlist9u64c9woj'),),))
inconsistent details in skipped record: ('2415@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Ftest%2Ftest_static.py', 'washort@blackswan-20090716003640-zb3ugx0ozh7ikwo0') ('1668634 894 0 2412', ((('2415@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Ftest%2Ftest_static.py', 'svn-v4:e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer/trunk:3403'),),)) ('1884204 894 0 2412', ((('2415@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Ftest%2Ftest_static.py', 'washort@blackswan-20090709234859-zxvlist9u64c9woj'),),))
inconsistent details in skipped record: ('2@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Ficaldav.py', 'washort@blackswan-20090716003640-zb3ugx0ozh7ikwo0') ('1693105 1550 0 5384', ((('2@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Ficaldav.py', 'svn-v4:e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer/trunk:2886'),),)) ('1908675 1550 0 5384', ((('2@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Ficaldav.py', 'washort@blackswan-20090709234859-zxvlist9u64c9woj'),),))
inconsistent details in skipped record: ('2880@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Ffreebusyurl.py', 'washort@blackswan-20090716003640-zb3ugx0ozh7ikwo0') ('1694655 2760 0 8873', ((('2880@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Ffreebusyurl.py', 'svn-v4:e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer/trunk:4274'),),)) ('1910225 2760 0 8873', ((('2880@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Ffreebusyurl.py', 'washort@blackswan-20090709234859-zxvlist9u64c9woj'),),))
inconsistent details in skipped record: ('2@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fstatic.py', 'washort@blackswan-20090716003640-zb3ugx0ozh7ikwo0') ('1697415 9371 0 44780', ((('2@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fstatic.py', 'svn-v4:e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer/trunk:4274'),),)) ('1912985 9371 0 44780', ((('2@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Ftwistedcaldav%2Fstatic.py', 'washort@blackswan-20090709234859-zxvlist9u64c9woj'),),))
inconsistent details in skipped record: ('3402@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Fcalendarserver%2Ftap%2Fcaldav.py', 'washort@blackswan-20090716003640-zb3ugx0ozh7ikwo0') ('1723272 11569 0 49130', ((('3402@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Fcalendarserver%2Ftap%2Fcaldav.py', 'svn-v4:e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer/trunk:4444'),),)) ('1938842 11569 0 49130', ((('3402@e27351fd-9f3e-4f54-a53b-843176b1656c:CalendarServer%2Ftrunk%2Fcalendarserver%2Ftap%2Fcaldav.py', 'washort@blackswan-20090709234859-zxvlist9u64c9woj'),),))