.
Thread 1 (process 6076):
#0  0xb7dc12a5 in std::_Rb_tree_increment () from /usr/lib/libstdc++.so.6
#1  0xb7dc12dd in std::_Rb_tree_increment () from /usr/lib/libstdc++.so.6
#2  0x080aa0ac in tagcoll::diskindex::IntIndexer::encode ()
#3  0x080a92e2 in tagcoll::diskindex::MasterMMapIndexer::append ()
#4  0x08097aaf in ept::t::cache::debtags::IndexManager<ept::Path>::Tagdb<ept::configuration::Apt>::rebuild (this=0xbfa55bbc, tagfname=@0xbfa55b68, 
    idxfname=@0xbfa55b64) at /usr/include/ept/cache/debtags/update.tcc:320
	master = {finalname = {static npos = 4294967295, 
    _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, 
      _M_p = 0x8100d5c "/var/lib/debtags/package-tags.idx"}}, tmpname = {static npos = 4294967295, 
    _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, 
      _M_p = 0x8100d94 "/var/lib/debtags/package-tags.idx.nZwtF5"}}, fd = 3}
	tagindexer = {pkgidx = <incomplete type>, tagidx = <incomplete type>}
	mergedCopy = {<tagcoll::coll::Collection<tagcoll::coll::Simple<ept::t::cache::Package<ept::configuration::Apt>, ept::t::cache::Tag<ept::configuration::Apt> > >> = {<tagcoll::coll::ReadonlyCollection<tagcoll::coll::Simple<ept::t::cache::Package<ept::configuration::Apt>, ept::t::cache::Tag<ept::configuration::Apt> > >> = {<No data fields>}, <No data fields>}, coll = {_M_t = {
      _M_impl = {<std::allocator<std::_Rb_tree_node<std::pair<const ept::t::cache::Package<ept::configuration::Apt>, std::set<ept::t::cache::Tag<ept::configuration::Apt>, std::less<ept::t::cache::Tag<ept::configuration::Apt> >, std::allocator<ept::t::cache::Tag<ept::configuration::Apt> > > > > >> = {<__gnu_cxx::new_allocator<std::_Rb_tree_node<std::pair<const ept::t::cache::Package<ept::configuration::Apt>, std::set<ept::t::cache::Tag<ept::configuration::Apt>, std::less<ept::t::cache::Tag<ept::configuration::Apt> >, std::allocator<ept::t::cache::Tag<ept::configuration::Apt> > > > > >> = {<No data fields>}, <No data fields>}, 
        _M_key_compare = {<> = {<No data fields>}, <No data fields>}, _M_header = {_M_color = std::_S_red, _M_parent = 0x8116978, _M_left = 0x8901a28, 
          _M_right = 0x84185a8}, _M_node_count = 18232}}}}
	tmpdb = {static npos = 4294967295, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, 
    _M_p = 0x80dff24 "$\004\016\bÔ\033\016\bô\033\016\bdex"}}
	out = <value optimized out>
#5  0x0809822f in ept::t::cache::debtags::IndexManager<ept::Path>::Tagdb<ept::configuration::Apt>::rebuildIfNeeded (this=0xbfa55bbc)
    at /usr/include/ept/cache/debtags/update.tcc:351
No locals.
#6  0x08098331 in ept::t::cache::debtags::IndexManager<ept::Path>::obtainWorkingTagdb<ept::configuration::Apt> (ag=@0x80e1c1c, tagfname=@0xbfa56628, 
    idxfname=@0xbfa56620) at /usr/include/ept/cache/debtags/update.tcc:421
	t = {agg = @0x80e1c1c, mainSource = {<ept::t::cache::debtags::Directory> = {m_path = {static npos = 4294967295, 
        _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, 
          _M_p = 0x80e03fc "/var/lib/debtags/"}}}, <No data fields>}, userSource = {<ept::t::cache::debtags::Directory> = {m_path = {static npos = 4294967295, 
        _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, 
          _M_p = 0x80e1bd4 "/root/.debtags/"}}}, <No data fields>}, ts_pkgidx = 1179431184, ts_main_src = 1176787492, ts_user_src = 0, ts_main_tag = 1179431082, 
  ts_main_idx = 1179431082, ts_user_tag = 0, ts_user_idx = 0}
#7  0x0805ec4c in main (argc=3, argv=0x85a1840) at debtags.cc:1640
	fetcher = {static npos = 4294967295, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, 
    _M_p = 0xb7f695e1 "\201Ã\023j"}}
	a = {static npos = 4294967295, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, 
    _M_p = 0x80e57ac "/var/lib/debtags/vocabulary"}}
	b = {static npos = 4294967295, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, 
    _M_p = 0x80e37ec "/var/lib/debtags/vocabulary.idx"}}
	installUnexpected = {old = 0xb7e1ecc0 <std::terminate()>}
	opts = {<wibble::commandline::StandardParserWithMandatoryCommand> = {<wibble::commandline::StandardParserWithManpage> = {<wibble::commandline::StandardParser> = {<wibble::commandline::Parser> = {<wibble::commandline::Engine> = {<wibble::commandline::Managed> = {_vptr.Managed = 0x80c0918}, m_manager = 0xbfa55fbc, m_name = {
              static npos = 4294967295, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, 
                _M_p = 0x80dc70c "debtags"}}, m_groups = {<std::_Vector_base<wibble::commandline::OptionGroup*,std::allocator<wibble::commandline::OptionGroup*> >> = {
                _M_impl = {<std::allocator<wibble::commandline::OptionGroup*>> = {<__gnu_cxx::new_allocator<wibble::commandline::OptionGroup*>> = {<No data fields>}, <No data fields>}, _M_start = 0x80dc770, _M_finish = 0x80dc774, _M_end_of_storage = 0x80dc774}}, <No data fields>}, 
            m_options = {<std::_Vector_base<wibble::commandline::Option*,std::allocator<wibble::commandline::Option*> >> = {
                _M_impl = {<std::allocator<wibble::commandline::Option*>> = {<__gnu_cxx::new_allocator<wibble::commandline::Option*>> = {<No data fields>}, <No data fields>}, _M_start = 0x80dce18, _M_finish = 0x80dce20, _M_end_of_storage = 0x80dce20}}, <No data fields>}, 
            m_commands = {<std::_Vector_base<wibble::commandline::Engine*,std::allocator<wibble::commandline::Engine*> >> = {
                _M_impl = {<std::allocator<wibble::commandline::Engine*>> = {<__gnu_cxx::new_allocator<wibble::commandline::Engine*>> = {<No data fields>}, <No data fields>}, _M_start = 0x80df270, _M_finish = 0x80df2d0, _M_end_of_storage = 0x80df2f0}}, <No data fields>}, m_short = {_M_t = {
                _M_impl = {<std::allocator<std::_Rb_tree_node<std::pair<const char, wibble::commandline::Option*> > >> = {<__gnu_cxx::new_allocator<std::_Rb_tree_node<std::pair<const char, wibble::commandline::Option*> > >> = {<No data fields>}, <No data fields>}, _M_key_compare = {<> = {<No data fields>}, <No data fields>}, 
                  _M_header = {_M_color = std::_S_red, _M_parent = 0x80dff78, _M_left = 0x80dff98, _M_right = 0x80e0018}, _M_node_count = 3}}}, m_long = {_M_t = {
                _M_impl = {<std::allocator<std::_Rb_tree_node<std::pair<const std::basic_string<char, std::char_traits<char>, std::allocator<char> >, wibble::commandline::Option*> > >> = {<__gnu_cxx::new_allocator<std::_Rb_tree_node<std::pair<const std::basic_string<char, std::char_traits<char>, std::allocator<char> >, wibble::commandline::Option*> > >> = {<No data fields>}, <No data fields>}, _M_key_compare = {<> = {<No data fields>}, <No data fields>}, _M_header = {_M_color = std::_S_red, 
                    _M_parent = 0x80dfff8, _M_left = 0x80e0058, _M_right = 0x80dffd8}, _M_node_count = 5}}}, m_aliases = {_M_t = {
                _M_impl = {<std::allocator<std::_Rb_tree_node<std::pair<const std::basic_string<char, std::char_traits<char>, std::allocator<char> >, wibble::commandline::Engine*> > >> = {<__gnu_cxx::new_allocator<std::_Rb_tree_node<std::pair<const std::basic_string<char, std::char_traits<char>, std::allocator<char> >, wibble::commandline::Engine*> > >> = {<No data fields>}, <No data fields>}, _M_key_compare = {<> = {<No data fields>}, <No data fields>}, _M_header = {_M_color = std::_S_red, 
                    _M_parent = 0x80e00b8, _M_left = 0x80e0198, _M_right = 0x80e0378}, _M_node_count = 25}}}, m_found_command = 0x80dd608, primaryAlias = {
              static npos = 4294967295, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, 
                _M_p = 0x80dc70c "debtags"}}, 
            aliases = {<std::_Vector_base<std::basic_string<char, std::char_traits<char>, std::allocator<char> >,std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >> = {
                _M_impl = {<std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >> = {<__gnu_cxx::new_allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >> = {<No data fields>}, <No data fields>}, _M_start = 0x0, _M_finish = 0x0, 
                  _M_end_of_storage = 0x0}}, <No data fields>}, usage = {static npos = 4294967295, 
              _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, 
                _M_p = 0x80dcbe4 "<command> [options and arguments]"}}, description = {static npos = 4294967295, 
              _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, 
                _M_p = 0x80dcc1c "Commandline interface to access and manipulate Debian Package Tags"}}, longDescription = {static npos = 4294967295, 
              _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x80dbe44 ""}}, examples = {
              static npos = 4294967295, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, 
                _M_p = 0x80dbe44 ""}}}, 
          m_args = {<std::list<std::basic_string<char, std::char_traits<char>, std::allocator<char> >,std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >> = {<std::_List_base<std::basic_string<char, std::char_traits<char>, std::allocator<char> >,std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >> = {
                _M_impl = {<std::allocator<std::_List_node<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >> = {<__gnu_cxx::new_allocator<std::_List_node<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >> = {<No data fields>}, <No data fields>}, _M_node = {_M_next = 0xbfa55fb4, 
                    _M_prev = 0xbfa55fb4}}}, <No data fields>}, <No data fields>}, m_manager = {components = {_M_t = {
                _M_impl = {<std::allocator<std::_Rb_tree_node<wibble::commandline::Managed*> >> = {<__gnu_cxx::new_allocator<std::_Rb_tree_node<wibble::commandline::Managed*> >> = {<No data fields>}, <No data fields>}, _M_key_compare = {<> = {<No data fields>}, <No data fields>}, _M_header = {_M_color = std::_S_red, 
                    _M_parent = 0x80dd4c8, _M_left = 0x80dc758, _M_right = 0x80dfef8}, _M_node_count = 45}}}}}, m_version = {static npos = 4294967295, 
          _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x80dc6f4 "1.6.6"}}, 
        helpGroup = 0x80dc738, help = 0x80dc7e0, version = 0x80dc8d8}, m_section = 1, m_author = {static npos = 4294967295, 
        _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x80dc6cc "enrico@enricozini.org"}}, 
      manpage = 0x80dc9e0}, helpCommand = 0x80dcb20}, out_quiet = 0x80dcfe8, out_verbose = 0x80dccc0, out_names = 0x80dcf18, out_debug = 0x80dcdb8, 
  out_facets = 0x80dd0f8, out_short = 0x80dd278, out_full = 0x80dd348, match_invert = 0x80dd470, misc_local = 0x80dd740, misc_reindex = 0x80dd818, 
  misc_distance = 0x80de3d8, misc_vocfile = 0x80dfec0, smse_reltags = 0x80dfb70, smse_disctags = 0x80dfc70, update = 0x80dd608, selfcheck = 0x80dd900, 
  check = 0x80ddaa0, tagcat = 0x80ddba0, tagshow = 0x80ddcc0, tagsearch = 0x80dde20, show = 0x80ddf90, related = 0x80de200, cat = 0x80de488, dumpavail = 0x80de5b8, 
  search = 0x80de728, grep = 0x80de898, install = 0x80dec38, diff = 0x80dedc8, maintainers = 0x80def30, tag = 0x80df1b8, submit = 0x80df3b0, todo = 0x80df4d0, 
  score = 0x80df630, stats = 0x80df730, todoreport = 0x80df840, smartsearch = 0x80dfa78, vocfilter = 0x80dfd70}
#8  0xb7c0aebc in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#9  0x0804ef41 in _start ()