WindowsError: [Error 183] Cannot create a file when that file already exists: u'c:\\trac\\gvcache'

[anonymous]

Traceback (most recent call last):
  File "build\bdist.win32\egg\trac\web\main.py", line 551, in _dispatch_request
    dispatcher.dispatch(req)
  File "build\bdist.win32\egg\trac\web\main.py", line 245, in dispatch
    method=method)
  File "build\bdist.win32\egg\trac\web\chrome.py", line 1110, in render_template
    encoding='utf-8')
  File "build\bdist.win32\egg\genshi\core.py", line 183, in render
    return encode(generator, method=method, encoding=encoding, out=out)
  File "build\bdist.win32\egg\genshi\output.py", line 58, in encode
    for chunk in iterator:
  File "build\bdist.win32\egg\genshi\output.py", line 339, in __call__
    for kind, data, pos in stream:
  File "build\bdist.win32\egg\genshi\output.py", line 826, in __call__
    for kind, data, pos in stream:
  File "build\bdist.win32\egg\genshi\output.py", line 670, in __call__
    for kind, data, pos in stream:
  File "build\bdist.win32\egg\genshi\output.py", line 771, in __call__
    for kind, data, pos in chain(stream, [(None, None, None)]):
  File "build\bdist.win32\egg\genshi\output.py", line 586, in __call__
    for ev in stream:
  File "build\bdist.win32\egg\genshi\core.py", line 288, in _ensure
    for event in stream:
  File "build\bdist.win32\egg\genshi\core.py", line 288, in _ensure
    for event in stream:
  File "build\bdist.win32\egg\trac\web\chrome.py", line 1293, in _strip_accesskeys
    for kind, data, pos in stream:
  File "build\bdist.win32\egg\genshi\core.py", line 288, in _ensure
    for event in stream:
  File "build\bdist.win32\egg\trac\web\chrome.py", line 1282, in _generate
    for kind, data, pos in stream:
  File "build\bdist.win32\egg\genshi\core.py", line 288, in _ensure
    for event in stream:
  File "build\bdist.win32\egg\genshi\template\base.py", line 605, in _include
    for event in stream:
  File "build\bdist.win32\egg\genshi\template\markup.py", line 378, in _match
    ctxt, start=idx + 1, **vars):
  File "build\bdist.win32\egg\genshi\template\markup.py", line 378, in _match
    ctxt, start=idx + 1, **vars):
  File "build\bdist.win32\egg\genshi\template\markup.py", line 327, in _match
    for event in stream:
  File "build\bdist.win32\egg\genshi\template\base.py", line 545, in _flatten
    for kind, data, pos in stream:
  File "build\bdist.win32\egg\genshi\core.py", line 288, in _ensure
    for event in stream:
  File "build\bdist.win32\egg\genshi\path.py", line 588, in _generate
    subevent = next()
  File "build\bdist.win32\egg\genshi\template\base.py", line 605, in _include
    for event in stream:
  File "build\bdist.win32\egg\genshi\template\markup.py", line 316, in _strip
    event = next()
  File "build\bdist.win32\egg\genshi\template\base.py", line 545, in _flatten
    for kind, data, pos in stream:
  File "build\bdist.win32\egg\genshi\core.py", line 288, in _ensure
    for event in stream:
  File "build\bdist.win32\egg\genshi\path.py", line 588, in _generate
    subevent = next()
  File "build\bdist.win32\egg\genshi\template\base.py", line 605, in _include
    for event in stream:
  File "build\bdist.win32\egg\genshi\template\markup.py", line 316, in _strip
    event = next()
  File "build\bdist.win32\egg\genshi\template\base.py", line 565, in _flatten
    result = _eval_expr(data, ctxt, vars)
  File "build\bdist.win32\egg\genshi\template\base.py", line 277, in _eval_expr
    retval = expr.evaluate(ctxt)
  File "build\bdist.win32\egg\genshi\template\eval.py", line 178, in evaluate
    return eval(self.code, _globals, {'__data__': data})
  File "c:\Trac\.egg-cache\trac-1.1.5dev-py2.7.egg-tmp\trac\wiki\templates\wiki_view.html", line 58, in <Expression u'wiki_to_html(context, text)'>
    <div id="wikipage" class="trac-content" py:content="wiki_to_html(context, text)" />
  File "build\bdist.win32\egg\trac\wiki\formatter.py", line 1580, in format_to_html
    return HtmlFormatter(env, context, wikidom).generate(escape_newlines)
  File "build\bdist.win32\egg\trac\wiki\formatter.py", line 1535, in generate
    escape_newlines)
  File "build\bdist.win32\egg\trac\wiki\formatter.py", line 1317, in format
    result = re.sub(self.wikiparser.rules, self.replace, line)
  File "C:\Python27\Lib\re.py", line 155, in sub
    return _compile(pattern, flags).sub(repl, string, count)
  File "build\bdist.win32\egg\trac\wiki\formatter.py", line 1235, in replace
    replacement = self.handle_match(fullmatch)
  File "build\bdist.win32\egg\trac\wiki\formatter.py", line 1231, in handle_match
    return internal_handler(match, fullmatch)
  File "build\bdist.win32\egg\trac\wiki\formatter.py", line 775, in _macrolink_formatter
    macro = WikiProcessor(self, (name, name[:-1])[macrolist])
  File "build\bdist.win32\egg\trac\wiki\formatter.py", line 165, in __init__
    for macro_name in macro_provider.get_macros() or []:
  File "build\bdist.win32\egg\graphviz\graphviz.py", line 223, in get_macros
    self._load_config()
  File "build\bdist.win32\egg\graphviz\graphviz.py", line 466, in _load_config
    os.mkdir(self.cache_dir)
WindowsError: [Error 183] Cannot create a file when that file already exists: u'c:\\trac\\gvcache'

I found this in my logfile once. Usually everything works fine.

[Ryan J Ollos]

Please reopen if you can reproduce with current trunk.