.
Thread 3 (Thread 3984):
#0  0x00007f5b40ce7ebf in poll () from /lib/libc.so.6
No symbol table info available.
#1  0x00007f5b3f9f6074 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f5b3f9f6962 in g_main_loop_run () from /lib/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f5b3da09d14 in ?? () from /usr/lib/libgio-2.0.so.0
No symbol table info available.
#4  0x00007f5b3fa1d1e4 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f5b41e40d7c in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#6  0x00007f5b40cf4fdd in clone () from /lib/libc.so.6
No symbol table info available.
#7  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (Thread 3983):
#0  0x00007f5b41e45eeb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
No symbol table info available.
#1  0x00007f5b3feac392 in ?? () from /usr/lib/libgthread-2.0.so.0
No symbol table info available.
#2  0x00007f5b3f9cb27f in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f5b3f9cbc79 in g_async_queue_timed_pop () from /lib/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f5b3fa1f85a in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f5b3fa1d1e4 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#6  0x00007f5b41e40d7c in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#7  0x00007f5b40cf4fdd in clone () from /lib/libc.so.6
No symbol table info available.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 3981):
#0  0x00007f5b39149244 in __cxa_allocate_exception () from /usr/lib/libstdc++.so.6
No symbol table info available.
#1  0x00007f5b34e35f97 in Xapian::Database::Database(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) () from /usr/lib/libxapian.so.22
No symbol table info available.
#2  0x00007f5b3521ab18 in ?? () from /usr/lib/python2.7/dist-packages/xapian/_xapian.so
No symbol table info available.
#3  0x000000000049b296 in PyEval_EvalFrameEx ()
No symbol table info available.
#4  0x000000000049df05 in PyEval_EvalCodeEx ()
No symbol table info available.
#5  0x00000000004c4fa6 in ?? ()
No symbol table info available.
#6  0x000000000045d8e4 in PyObject_Call ()
No symbol table info available.
#7  0x000000000045f52f in ?? ()
No symbol table info available.
#8  0x000000000045d8e4 in PyObject_Call ()
No symbol table info available.
#9  0x000000000048bc1f in ?? ()
No symbol table info available.
#10 0x000000000048a06d in ?? ()
No symbol table info available.
#11 0x000000000045d8e4 in PyObject_Call ()
No symbol table info available.
#12 0x000000000049787e in PyEval_EvalFrameEx ()
No symbol table info available.
#13 0x000000000049df05 in PyEval_EvalCodeEx ()
No symbol table info available.
#14 0x00000000004976c2 in PyEval_EvalFrameEx ()
No symbol table info available.
#15 0x000000000049df05 in PyEval_EvalCodeEx ()
No symbol table info available.
#16 0x00000000004c4fa6 in ?? ()
No symbol table info available.
#17 0x000000000045d8e4 in PyObject_Call ()
No symbol table info available.
#18 0x000000000045f52f in ?? ()
No symbol table info available.
#19 0x000000000045d8e4 in PyObject_Call ()
No symbol table info available.
#20 0x0000000000496986 in PyEval_CallObjectWithKeywords ()
No symbol table info available.
#21 0x0000000000460648 in PyInstance_New ()
No symbol table info available.
#22 0x000000000045d8e4 in PyObject_Call ()
No symbol table info available.
#23 0x000000000049787e in PyEval_EvalFrameEx ()
No symbol table info available.
#24 0x000000000049df05 in PyEval_EvalCodeEx ()
No symbol table info available.
#25 0x00000000004ece52 in PyEval_EvalCode ()
No symbol table info available.
#26 0x00000000004fdfb4 in ?? ()
No symbol table info available.
#27 0x000000000042c182 in PyRun_FileExFlags ()
No symbol table info available.
#28 0x000000000042cb4a in PyRun_SimpleFileExFlags ()
No symbol table info available.
#29 0x0000000000418c9e in Py_Main ()
No symbol table info available.
#30 0x00007f5b40c2deff in __libc_start_main () from /lib/libc.so.6
No symbol table info available.
#31 0x00000000004c6d31 in _start ()
No symbol table info available.