Cannot checkout lp:ubuntu/vivid/network-manager, ERROR: Revision {...} not present in "Graph(StackedParentsProvider(bzrlib.repository._LazyListJoin(([CachingParentsProvider(None)], []))))".

[You-Sheng Yang]

STR:
1. Run `bzr branch lp:ubuntu/vivid/network-manager`

Expected:
Repository been checked out.

Actual:
bzr: ERROR: Revision {<email address hidden>} not present in "Graph(StackedParentsProvider(bzrlib.repository._LazyListJoin(([CachingParentsProvider(None)], []))))".

Versions:
[Ubuntu Vivid]
$ apt-cache policy bzr
bzr:
  Installed: 2.6.0+bzr6595-6ubuntu1
  Candidate: 2.6.0+bzr6595-6ubuntu1
  Version table:
 *** 2.6.0+bzr6595-6ubuntu1 0
        500 http://ports.ubuntu.com/ubuntu-ports/ vivid/main armhf Packages
        100 /var/lib/dpkg/status
$ bzr --version
Bazaar (bzr) 2.7.0dev1
  Python interpreter: /usr/bin/python 2.7.9
  Python standard library: /usr/lib/python2.7
  Platform: Linux-3.16.0-4-amd64-armv7l-with-Ubuntu-15.04-vivid
  bzrlib: /usr/lib/python2.7/dist-packages/bzrlib
  Bazaar configuration: /home/vicamo/.bazaar
  Bazaar log file: /home/vicamo/.bzr.log

[Debian Sid]
$ apt-cache policy bzr
bzr:
  Installed: 2.6.0+bzr6602-2
  Candidate: 2.6.0+bzr6602-2
  Version table:
 *** 2.6.0+bzr6602-2 0
        500 http://opensource.nchc.org.tw/debian/ sid/main amd64 Packages
        100 /var/lib/dpkg/status
$ bzr --version
Bazaar (bzr) 2.7.0dev1
  Python interpreter: /usr/bin/python 2.7.10
  Python standard library: /usr/lib/python2.7
  Platform: Linux-3.16.0-4-amd64-x86_64-with-debian-stretch-sid
  bzrlib: /usr/lib/python2.7/dist-packages/bzrlib
  Bazaar configuration: /home/vicamo/.bazaar
  Bazaar log file: /home/vicamo/.bzr.log

[Mac Homebrew]
$ bzr --version
Bazaar (bzr) 2.6.0
  Python interpreter: /usr/bin/python 2.7.6
  Python standard library: /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7
  Platform: Darwin-14.3.0-x86_64-i386-64bit
  bzrlib: /usr/local/Cellar/bazaar/2.6.0/libexec/bzrlib
  Bazaar configuration: /Users/vicamo/.bazaar
  Bazaar log file: /Users/vicamo/.bzr.log

[You-Sheng Yang (vicamo)]

And,

$ bzr branch lp:ubuntu/vivid/systemd
bzr: ERROR: Revision {<email address hidden>} not present in "Graph(StackedParentsProvider(bzrlib.repository._LazyListJoin(([CachingParentsProvider(None)], []))))".