diff --git a/mercurial/branchmap.py b/mercurial/branchmap.py --- a/mercurial/branchmap.py +++ b/mercurial/branchmap.py @@ -251,9 +251,8 @@ class branchcache(dict): 'wrote %s branch cache with %d labels and %d nodes\n', repo.filtername, len(self), nodecount) except (IOError, OSError, error.Abort) as inst: + # Abort may be raised by read only opener, so log and continue repo.ui.debug("couldn't write branch cache: %s\n" % inst) - # Abort may be raise by read only opener - pass def update(self, repo, revgen): """Given a branchhead cache, self, that may have extra nodes or be