UnicodeDecodeError: 'utf8' codec can't decode byte 0xfc in position 20: invalid start byte

[alegz@…]

How to Reproduce

While doing a GET operation on /changeset, Trac issued an internal error.

(please provide additional details here)

Request parameters:

{'new': u'79cf28fad96b103e92d1412281a965f6ef3a6ecb',
 'new_path': u'/DreamMealDeal_git/application/controllers/default.class.php',
 'old': u'79cf28fad96b103e92d1412281a965f6ef3a6ecb',
 'old_path': u'/DreamMealDeal_git/application/controllers/default.class.php'}

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:11.0) Gecko/20100101 Firefox/11.0

System Information

Trac	0.12.3
Babel	0.9.6
Genshi	0.6
GIT	1.7.9.2
Mercurial	2.1
psycopg2	2.4.4
Pygments	1.5
Python	2.7.2 (default, Jan 31 2012, 13:19:49) [GCC 4.6.2 20120120 (prerelease)]
setuptools	0.6
jQuery	1.4.4

Enabled Plugins

TracGit	0.12.0.5dev
TracMercurial	0.12.0.28

Python Traceback

Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/trac/web/main.py", line 522, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.7/site-packages/trac/web/main.py", line 243, in dispatch
    resp = chosen_handler.process_request(req)
  File "/usr/lib/python2.7/site-packages/trac/versioncontrol/web_ui/changeset.py", line 352, in process_request
    self._render_html(req, repos, chgset, restricted, xhr, data)
  File "/usr/lib/python2.7/site-packages/trac/versioncontrol/web_ui/changeset.py", line 581, in _render_html
    for old_node, new_node, kind, change in get_changes():
  File "/usr/lib/python2.7/site-packages/trac/versioncontrol/web_ui/changeset.py", line 395, in get_changes
    for npath, kind, change, opath, orev in chgset.get_changes():
  File "/usr/lib/python2.7/site-packages/tracext/git/git_fs.py", line 655, in get_changes
    self.repos.git.diff_tree(parent, self.rev, find_renames=True):
  File "/usr/lib/python2.7/site-packages/tracext/git/PyGIT.py", line 862, in diff_tree
    yield __chg_tuple()
  File "/usr/lib/python2.7/site-packages/tracext/git/PyGIT.py", line 854, in __chg_tuple
    chg[5] = self._fs_to_unicode(chg[5])
  File "/usr/lib/python2.7/site-packages/tracext/git/PyGIT.py", line 237, in <lambda>
    self._fs_to_unicode = lambda s: s.decode(git_fs_encoding)
  File "/usr/lib/python2.7/encodings/utf_8.py", line 16, in decode
    return codecs.utf_8_decode(input, errors, True)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xfc in position 20: invalid start byte

[Jun Omae]

A duplicate of #8087.