. Thread 2 (Thread 7081): #0 0x00007f89a4d018ef in free () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #1 0x00007f89a18198c3 in std::_Rb_tree >, std::_Select1st > >, std::less, std::allocator > > >::_M_erase(std::_Rb_tree_node > >*) () from /usr/lib/libxapian.so.22 No symbol table info available. #2 0x00007f89a18198b7 in std::_Rb_tree >, std::_Select1st > >, std::less, std::allocator > > >::_M_erase(std::_Rb_tree_node > >*) () from /usr/lib/libxapian.so.22 No symbol table info available. #3 0x00007f89a18198b7 in std::_Rb_tree >, std::_Select1st > >, std::less, std::allocator > > >::_M_erase(std::_Rb_tree_node > >*) () from /usr/lib/libxapian.so.22 No symbol table info available. #4 0x00007f89a18198b7 in std::_Rb_tree >, std::_Select1st > >, std::less, std::allocator > > >::_M_erase(std::_Rb_tree_node > >*) () from /usr/lib/libxapian.so.22 No symbol table info available. #5 0x00007f89a18198b7 in std::_Rb_tree >, std::_Select1st > >, std::less, std::allocator > > >::_M_erase(std::_Rb_tree_node > >*) () from /usr/lib/libxapian.so.22 No symbol table info available. #6 0x00007f89a18198b7 in std::_Rb_tree >, std::_Select1st > >, std::less, std::allocator > > >::_M_erase(std::_Rb_tree_node > >*) () from /usr/lib/libxapian.so.22 No symbol table info available. #7 0x00007f89a18198b7 in std::_Rb_tree >, std::_Select1st > >, std::less, std::allocator > > >::_M_erase(std::_Rb_tree_node > >*) () from /usr/lib/libxapian.so.22 No symbol table info available. #8 0x00007f89a18198b7 in std::_Rb_tree >, std::_Select1st > >, std::less, std::allocator > > >::_M_erase(std::_Rb_tree_node > >*) () from /usr/lib/libxapian.so.22 No symbol table info available. #9 0x00007f89a18198b7 in std::_Rb_tree >, std::_Select1st > >, std::less, std::allocator > > >::_M_erase(std::_Rb_tree_node > >*) () from /usr/lib/libxapian.so.22 No symbol table info available. #10 0x00007f89a18198b7 in std::_Rb_tree >, std::_Select1st > >, std::less, std::allocator > > >::_M_erase(std::_Rb_tree_node > >*) () from /usr/lib/libxapian.so.22 No symbol table info available. #11 0x00007f89a18198b7 in std::_Rb_tree >, std::_Select1st > >, std::less, std::allocator > > >::_M_erase(std::_Rb_tree_node > >*) () from /usr/lib/libxapian.so.22 No symbol table info available. #12 0x00007f89a1819aa0 in std::_Rb_tree, std::allocator >, std::pair, std::allocator > const, std::map, std::less, std::allocator > > > >, std::_Select1st, std::allocator > const, std::map, std::less, std::allocator > > > > >, std::less, std::allocator > >, std::allocator, std::allocator > const, std::map, std::less, std::allocator > > > > > >::_M_erase(std::_Rb_tree_node, std::allocator > const, std::map, std::less, std::allocator > > > > >*) () from /usr/lib/libxapian.so.22 No symbol table info available. #13 0x00007f89a1819a8f in std::_Rb_tree, std::allocator >, std::pair, std::allocator > const, std::map, std::less, std::allocator > > > >, std::_Select1st, std::allocator > const, std::map, std::less, std::allocator > > > > >, std::less, std::allocator > >, std::allocator, std::allocator > const, std::map, std::less, std::allocator > > > > > >::_M_erase(std::_Rb_tree_node, std::allocator > const, std::map, std::less, std::allocator > > > > >*) () from /usr/lib/libxapian.so.22 No symbol table info available. #14 0x00007f89a1819a8f in std::_Rb_tree, std::allocator >, std::pair, std::allocator > const, std::map, std::less, std::allocator > > > >, std::_Select1st, std::allocator > const, std::map, std::less, std::allocator > > > > >, std::less, std::allocator > >, std::allocator, std::allocator > const, std::map, std::less, std::allocator > > > > > >::_M_erase(std::_Rb_tree_node, std::allocator > const, std::map, std::less, std::allocator > > > > >*) () from /usr/lib/libxapian.so.22 No symbol table info available. #15 0x00007f89a1819a8f in std::_Rb_tree, std::allocator >, std::pair, std::allocator > const, std::map, std::less, std::allocator > > > >, std::_Select1st, std::allocator > const, std::map, std::less, std::allocator > > > > >, std::less, std::allocator > >, std::allocator, std::allocator > const, std::map, std::less, std::allocator > > > > > >::_M_erase(std::_Rb_tree_node, std::allocator > const, std::map, std::less, std::allocator > > > > >*) () from /usr/lib/libxapian.so.22 No symbol table info available. #16 0x00007f89a1819a8f in std::_Rb_tree, std::allocator >, std::pair, std::allocator > const, std::map, std::less, std::allocator > > > >, std::_Select1st, std::allocator > const, std::map, std::less, std::allocator > > > > >, std::less, std::allocator > >, std::allocator, std::allocator > const, std::map, std::less, std::allocator > > > > > >::_M_erase(std::_Rb_tree_node, std::allocator > const, std::map, std::less, std::allocator > > > > >*) () from /usr/lib/libxapian.so.22 No symbol table info available. #17 0x00007f89a1819a8f in std::_Rb_tree, std::allocator >, std::pair, std::allocator > const, std::map, std::less, std::allocator > > > >, std::_Select1st, std::allocator > const, std::map, std::less, std::allocator > > > > >, std::less, std::allocator > >, std::allocator, std::allocator > const, std::map, std::less, std::allocator > > > > > >::_M_erase(std::_Rb_tree_node, std::allocator > const, std::map, std::less, std::allocator > > > > >*) () from /usr/lib/libxapian.so.22 No symbol table info available. #18 0x00007f89a1819a8f in std::_Rb_tree, std::allocator >, std::pair, std::allocator > const, std::map, std::less, std::allocator > > > >, std::_Select1st, std::allocator > const, std::map, std::less, std::allocator > > > > >, std::less, std::allocator > >, std::allocator, std::allocator > const, std::map, std::less, std::allocator > > > > > >::_M_erase(std::_Rb_tree_node, std::allocator > const, std::map, std::less, std::allocator > > > > >*) () from /usr/lib/libxapian.so.22 No symbol table info available. #19 0x00007f89a181583c in ?? () from /usr/lib/libxapian.so.22 No symbol table info available. #20 0x00007f89a18158ae in ?? () from /usr/lib/libxapian.so.22 No symbol table info available. #21 0x00007f89a178d27f in Xapian::Database::allterms_begin(std::basic_string, std::allocator > const&) const () from /usr/lib/libxapian.so.22 No symbol table info available. #22 0x00007f89a18d7190 in ?? () from /usr/lib/libxapian.so.22 No symbol table info available. #23 0x00007f89a18d9d32 in ?? () from /usr/lib/libxapian.so.22 No symbol table info available. #24 0x00007f89a18dd58e in Xapian::QueryParser::Internal::parse_query(std::basic_string, std::allocator > const&, unsigned int, std::basic_string, std::allocator > const&) () from /usr/lib/libxapian.so.22 No symbol table info available. #25 0x00007f89a18d41d4 in Xapian::QueryParser::parse_query(std::basic_string, std::allocator > const&, unsigned int, std::basic_string, std::allocator > const&) () from /usr/lib/libxapian.so.22 No symbol table info available. #26 0x00007f89a1bb66d8 in ?? () from /usr/lib/python2.7/dist-packages/xapian/_xapian.so No symbol table info available. #27 0x000000000049b3a8 in PyEval_EvalFrameEx () No symbol table info available. #28 0x000000000049d325 in PyEval_EvalCodeEx () No symbol table info available. #29 0x0000000000496a92 in PyEval_EvalFrameEx () No symbol table info available. #30 0x000000000049d325 in PyEval_EvalCodeEx () No symbol table info available. #31 0x00000000004c46f8 in ?? () No symbol table info available. #32 0x000000000045d864 in PyObject_Call () No symbol table info available. #33 0x0000000000498461 in PyEval_EvalFrameEx () No symbol table info available. #34 0x000000000049d885 in PyEval_EvalCodeEx () No symbol table info available. #35 0x00000000004c4526 in ?? () No symbol table info available. #36 0x000000000045d864 in PyObject_Call () No symbol table info available. #37 0x000000000045f43f in ?? () No symbol table info available. #38 0x000000000045ddf2 in PyObject_CallFunctionObjArgs () No symbol table info available. #39 0x00007f89a319f595 in ?? () from /usr/lib/pymodules/python2.7/_dbus_bindings.so No symbol table info available. #40 0x00007f89a31a0215 in ?? () from /usr/lib/pymodules/python2.7/_dbus_bindings.so No symbol table info available. #41 0x00007f89a2f6ea01 in ?? () from /lib/x86_64-linux-gnu/libdbus-1.so.3 No symbol table info available. #42 0x00007f89a2f60b10 in dbus_connection_dispatch () from /lib/x86_64-linux-gnu/libdbus-1.so.3 No symbol table info available. #43 0x00007f89a24f3655 in ?? () from /usr/lib/libdbus-glib-1.so.2 No symbol table info available. #44 0x00007f89a3c70bcd in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #45 0x00007f89a3c713a8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #46 0x00007f89a3c719f2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #47 0x00007f89a4585051 in ?? () from /usr/lib/python2.7/dist-packages/glib/_glib.so No symbol table info available. #48 0x00000000004970ef in PyEval_EvalFrameEx () No symbol table info available. #49 0x000000000049d325 in PyEval_EvalCodeEx () No symbol table info available. #50 0x00000000004ecb02 in PyEval_EvalCode () No symbol table info available. #51 0x00000000004fdc74 in ?? () No symbol table info available. #52 0x000000000042c182 in PyRun_FileExFlags () No symbol table info available. #53 0x000000000042cb4a in PyRun_SimpleFileExFlags () No symbol table info available. #54 0x0000000000418c9e in Py_Main () No symbol table info available. #55 0x00007f89a4ca3eff in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #56 0x00000000004c62b1 in _start () No symbol table info available. . Thread 1 (Thread 7083): #0 0x00007f89a181a63f in std::_Rb_tree >, std::_Select1st > >, std::less, std::allocator > > >::_M_insert_unique_(std::_Rb_tree_const_iterator > >, std::pair > const&) () from /usr/lib/libxapian.so.22 No symbol table info available. #1 0x00007f89a1816dfe in ?? () from /usr/lib/libxapian.so.22 No symbol table info available. #2 0x00007f89a1817a74 in ?? () from /usr/lib/libxapian.so.22 No symbol table info available. #3 0x00007f89a1819336 in ?? () from /usr/lib/libxapian.so.22 No symbol table info available. #4 0x00007f89a1b97d18 in ?? () from /usr/lib/python2.7/dist-packages/xapian/_xapian.so No symbol table info available. #5 0x000000000049b3a8 in PyEval_EvalFrameEx () No symbol table info available. #6 0x0000000000496dbf in PyEval_EvalFrameEx () No symbol table info available. #7 0x000000000049d325 in PyEval_EvalCodeEx () No symbol table info available. #8 0x00000000004c46f8 in ?? () No symbol table info available. #9 0x000000000045d864 in PyObject_Call () No symbol table info available. #10 0x0000000000498461 in PyEval_EvalFrameEx () No symbol table info available. #11 0x0000000000496dbf in PyEval_EvalFrameEx () No symbol table info available. #12 0x0000000000496dbf in PyEval_EvalFrameEx () No symbol table info available. #13 0x000000000049d325 in PyEval_EvalCodeEx () No symbol table info available. #14 0x00000000004c4526 in ?? () No symbol table info available. #15 0x000000000045d864 in PyObject_Call () No symbol table info available. #16 0x000000000045f43f in ?? () No symbol table info available. #17 0x000000000045d864 in PyObject_Call () No symbol table info available. #18 0x0000000000495d46 in PyEval_CallObjectWithKeywords () No symbol table info available. #19 0x00000000005046f2 in ?? () No symbol table info available. #20 0x00007f89a5ea5d8c in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 No symbol table info available. #21 0x00007f89a4d6b04d in clone () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #22 0x0000000000000000 in ?? () No symbol table info available.