git-bloom-release fails with svn upstream repo

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Upon releasing through git-bloom-release with svn upstream repo, I get this error. Is there anything wrong? I'm only testing locally here.

$ git-bloom-release --version
0.4.4
$ mkdir -p ~/tmp/samplepkg-release
$ cd tmp/samplepkg-release
$ (mkdir -p /tmp/git; cd /tmp/git/; rm -fr foo.git; mkdir foo.git; cd foo.git ; git --bare init)
$ git init
$ git-bloom-config new groovy
:
  (type following information
    uri -> <a href="https://rtm-ros-robotics.googlecode.com/svn/trunk/rtmros_common/rtctree">https://rtm-ros-robotics.googlecode.com/svn/trunk/rtmros_common/rtctree</a>
    vcs -> svn
    release tag -> :{none}
$ git remote add origin file:///tmp/git/foo.git  # dummy remote release repo
$ git push -u origin master
$ git-bloom-release -d groovy
track_branches(['bloom', 'master'], None)
Tracking branches: []
Checking out to master
Requested checkout reference is the same as the current branch
track_branches(['bloom'], None)
Tracking branches: []
Checking out to master
Requested checkout reference is the same as the current branch
/home/rosuser/data/Dropbox/pg/rtm-ros/tmp/samplepkg-release:$ git ls-tree bloom:CONTENT_MOVED_TO_MASTER_BRANCH
/home/rosuser/data/Dropbox/pg/rtm-ros/tmp/samplepkg-release:$ git show bloom:CONTENT_MOVED_TO_MASTER_BRANCH
track_branches(['bloom'], None)
Tracking branches: []
Checking out to master
Requested checkout reference is the same as the current branch
/home/rosuser/data/Dropbox/pg/rtm-ros/tmp/samplepkg-release:$ git ls-tree bloom:bloom.conf
/home/rosuser/data/Dropbox/pg/rtm-ros/tmp/samplepkg-release:$ git show bloom:bloom.conf
track_branches(None, None)
Tracking branches: []
Checking out to master
Requested checkout reference is the same as the current branch
+++ Cloning working copy for safety
/home/rosuser/data/Dropbox/pg/rtm-ros/tmp/samplepkg-release:$ git clone file:///home/rosuser/data/Dropbox/pg/rtm-ros/tmp/samplepkg-release /tmp/tmpO7GWX6/clone
track_branches(None, /tmp/tmpO7GWX6/clone)
Tracking branches: []
Checking out to master
Requested checkout reference is the same as the current branch
Processing release track settings for 'groovy'
Checking upstream devel branch for package.xml(s)
A    /tmp/tmpAVQZDI/upstream/manifest.xml
A    /tmp/tmpAVQZDI/upstream/catkin.cmake
A    /tmp/tmpAVQZDI/upstream/package.xml
A    /tmp/tmpAVQZDI/upstream/CMakeLists.txt
A    /tmp/tmpAVQZDI/upstream/Makefile
A    /tmp/tmpAVQZDI/upstream/rtctree-3.0.0.zip.md5sum
Checked out revision 4811.
Looking for packages in '/tmp/tmpAVQZDI/upstream'... found 'rtctree'.
track_branches(['master'], None)
fatal: Not a git repository (or any of the parent directories): .git
Traceback (most recent call last):
  File "/usr/bin/git-bloom-release", line 9, in <module>
    load_entry_point('bloom==0.4.4', 'console_scripts', 'git-bloom-release')()
  File "/usr/lib/pymodules/python2.7/bloom/commands/git/release.py", line 334, in main
    args.unsafe)
  File "/usr/lib/pymodules/python2.7/bloom/commands/git/release.py", line 244, in execute_track
    settings = process_track_settings(track_dict, release_inc)
  File "/usr/lib/pymodules/python2.7/bloom/commands/git/release.py", line 189, in process_track_settings
    track_dict['ros_distro'])
  File "/usr/lib/pymodules/python2.7/bloom/commands/git/release.py", line 146, in find_version_from_upstream
    meta = get_upstream_meta(upstream_repo.get_path(), ros_distro)
  File "/usr/lib/pymodules/python2.7/bloom/commands/git/release.py", line 121, in get_upstream_meta
    name, version, packages = get_package_data(current_branch, quiet=False)
  File "/usr/lib/pymodules/python2.7/bloom/packages.py", line 92, in get_package_data
    ignored_packages = get_ignored_packages()
  File "/usr/lib/pymodules/python2.7/bloom ...