[Bug 3702] New: strip fails under unknown conditions

[bugzilla-daemon at bz.selenic.com]

http://bz.selenic.com/show_bug.cgi?id=3702

          Priority: normal
            Bug ID: 3702
                CC: mercurial-devel at selenic.com
          Assignee: bugzilla at selenic.com
           Summary: strip fails under unknown conditions
          Severity: bug
    Classification: Unclassified
                OS: Windows
          Reporter: matt_harbison at yahoo.com
          Hardware: PC
            Status: UNCONFIRMED
           Version: unspecified
         Component: Mercurial
           Product: Mercurial

'hg strip -r tip' can fail with the traceback below, after pulling in this
cset:

changeset:   17928:7f5dab94e48c
user:        Augie Fackler <raf at durin42.com>
date:        Wed Nov 07 16:21:39 2012 -0600
summary:     bookmarks: introduce a bmstore to manage bookmark persistence


For example:

C:\Users\Matt\Projects\hg>hg pull -r 1e6b5faf9d4e -u
pulling from http://selenic.com/hg
searching for changes
adding changesets
adding manifests
adding file changes
added 2 changesets with 11 changes to 11 files
11 files updated, 0 files merged, 0 files removed, 0 files unresolved
caching new largefiles
0 largefiles cached

C:\Users\Matt\Projects\hg>hg strip -r tip
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
saved backup bundle to
C:\Users\Matt\Projects\hg\.hg\strip-backup\1e6b5faf9d4e-backup.hg

C:\Users\Matt\Projects\hg>hg strip -r tip
10 files updated, 0 files merged, 0 files removed, 0 files unresolved
saved backup bundle to
C:\Users\Matt\Projects\hg\.hg\strip-backup\7f5dab94e48c-backup.hg
strip failed, full bundle stored in
'C:\Users\Matt\Projects\hg\.hg\strip-backup\7f5dab94e48c-backup.hg'
** unknown exception encountered, please report by visiting
** http://mercurial.selenic.com/wiki/BugTracker
** Python 2.7.2 (default, Jun 12 2011, 15:08:59) [MSC v.1500 32 bit (Intel)]
** Mercurial Distributed SCM (version 2.4+11-9cc267fc29d0+20121113)
** Extensions loaded: eol, rebase, convert, graphlog, largefiles, patchbomb,
progress, extdiff, mq
Traceback (most recent call last):
  File "hg\hg", line 38, in <module>
    mercurial.dispatch.run()
  File "hg\mercurial\dispatch.py", line 28, in run
    sys.exit((dispatch(request(sys.argv[1:])) or 0) & 255)
  File "hg\mercurial\dispatch.py", line 65, in dispatch
    return _runcatch(req)
  File "hg\mercurial\dispatch.py", line 88, in _runcatch
    return _dispatch(req)
  File "hg\mercurial\dispatch.py", line 741, in _dispatch
    cmdpats, cmdoptions)
  File "hg\mercurial\dispatch.py", line 514, in runcommand
    ret = _runcommand(ui, options, cmd, d)
  File "hg\mercurial\dispatch.py", line 831, in _runcommand
    return checkargs()
  File "hg\mercurial\dispatch.py", line 802, in checkargs
    return cmdfunc()
  File "hg\mercurial\dispatch.py", line 738, in <lambda>
    d = lambda: util.checksignature(func)(ui, *args, **cmdoptions)
  File "hg\mercurial\util.py", line 472, in check
    return func(*args, **kwargs)
  File "hg\hgext\mq.py", line 3057, in strip

  File "hg\hgext\mq.py", line 1118, in strip
    repair.strip(self.ui, repo, revs, backup)
  File "hg\mercurial\repair.py", line 184, in strip
    bookmarks.write(repo)
AttributeError: 'module' object has no attribute 'write'

C:\Users\Matt\Projects\hg>hg log -r 9cc267fc29d0
abort: unknown revision '9cc267fc29d0'!


But a couple of strange things to note- the cset referenced in the traceback
doesn't exist, and I have no idea why the problem doesn't occur in the first
strip.

I originally ran into this rebasing mq patches, but this traceback was smaller
and eliminates variables like the content of the patches.  The patches were
rebased across the cset referenced above if that matters.

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