. Thread 2 (Thread 0x7fb237de9700 (LWP 2107)): #0 0x00007fb2379d0fd0 in sem_wait () from /lib/x86_64-linux-gnu/libpthread.so.0 No symbol table info available. #1 0x0000000000428985 in ?? () No symbol table info available. #2 0x000000000056d5e2 in PyEval_EvalFrameEx () No symbol table info available. #3 0x0000000000574c76 in PyEval_EvalCodeEx () No symbol table info available. #4 0x000000000056dc3e in PyEval_EvalFrameEx () No symbol table info available. #5 0x0000000000574c76 in PyEval_EvalCodeEx () No symbol table info available. #6 0x000000000056dc3e in PyEval_EvalFrameEx () No symbol table info available. #7 0x0000000000574c76 in PyEval_EvalCodeEx () No symbol table info available. #8 0x00000000005355a0 in ?? () No symbol table info available. #9 0x0000000000472f76 in PyObject_Call () No symbol table info available. #10 0x00000000004bb025 in ?? () No symbol table info available. #11 0x0000000000472f76 in PyObject_Call () No symbol table info available. #12 0x0000000000508ebd in PyObject_CallMethod () No symbol table info available. #13 0x00000000004e39f7 in Py_Finalize () No symbol table info available. #14 0x00000000004e3ab8 in Py_Exit () No symbol table info available. #15 0x00000000004e3bec in ?? () No symbol table info available. #16 0x00000000004e40e1 in PyErr_Print () No symbol table info available. #17 0x00007fb235e495aa in ?? () from /usr/lib/python2.7/dist-packages/gi/_gi.so No symbol table info available. #18 0x00007fb2359c5e72 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #19 0x00007fb2359d7943 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #20 0x00007fb2359e0230 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #21 0x00007fb2359e0472 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #22 0x00007fb233718235 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 No symbol table info available. #23 0x00007fb2337ea3b1 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 No symbol table info available. #24 0x00007fb2359c600c in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #25 0x00007fb2359dfd17 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #26 0x00007fb2359e0472 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #27 0x00007fb233930729 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 No symbol table info available. #28 0x00007fb23394c323 in gtk_window_propagate_key_event () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 No symbol table info available. #29 0x00007fb23394c37f in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 No symbol table info available. #30 0x00007fb2337ea3b1 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 No symbol table info available. #31 0x00007fb2359c609a in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #32 0x00007fb2359dfd17 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #33 0x00007fb2359e0472 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #34 0x00007fb233930729 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 No symbol table info available. #35 0x00007fb2337e82ec in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 No symbol table info available. #36 0x00007fb2337e9f41 in gtk_main_do_event () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 No symbol table info available. #37 0x00007fb23341afc2 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0 No symbol table info available. #38 0x00007fb235708d8a in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #39 0x00007fb235709150 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #40 0x00007fb235709214 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #41 0x00007fb2337e9371 in gtk_main_iteration_do () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 No symbol table info available. #42 0x00007fb234d59a14 in ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6 No symbol table info available. #43 0x00007fb234d59435 in ffi_call () from /usr/lib/x86_64-linux-gnu/libffi.so.6 No symbol table info available. #44 0x00007fb235c10900 in ?? () from /usr/lib/libgirepository-1.0.so.1 No symbol table info available. #45 0x00007fb235c11c6e in g_function_info_invoke () from /usr/lib/libgirepository-1.0.so.1 No symbol table info available. #46 0x00007fb235e4ad48 in ?? () from /usr/lib/python2.7/dist-packages/gi/_gi.so No symbol table info available. #47 0x0000000000571c0e in PyEval_EvalFrameEx () No symbol table info available. #48 0x0000000000574c76 in PyEval_EvalCodeEx () No symbol table info available. #49 0x000000000056dc3e in PyEval_EvalFrameEx () No symbol table info available. #50 0x000000000056db80 in PyEval_EvalFrameEx () No symbol table info available. #51 0x0000000000574c76 in PyEval_EvalCodeEx () No symbol table info available. #52 0x000000000056dc3e in PyEval_EvalFrameEx () No symbol table info available. #53 0x0000000000574c76 in PyEval_EvalCodeEx () No symbol table info available. #54 0x000000000056dc3e in PyEval_EvalFrameEx () No symbol table info available. #55 0x000000000056db80 in PyEval_EvalFrameEx () No symbol table info available. #56 0x000000000056db80 in PyEval_EvalFrameEx () No symbol table info available. #57 0x0000000000574c76 in PyEval_EvalCodeEx () No symbol table info available. #58 0x00000000005344b1 in PyRun_FileExFlags () No symbol table info available. #59 0x0000000000535e03 in PyRun_SimpleFileExFlags () No symbol table info available. #60 0x00000000005372ac in Py_Main () No symbol table info available. #61 0x00007fb23671176d in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #62 0x000000000041b991 in _start () No symbol table info available. . Thread 1 (Thread 0x7fb2259d5700 (LWP 2173)): #0 0x00007fb22c75fbb6 in pkgDepCache::CheckDep(pkgCache::DepIterator, int, pkgCache::PkgIterator&) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12 No symbol table info available. #1 0x00007fb22c760723 in pkgDepCache::DependencyState(pkgCache::DepIterator&) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12 No symbol table info available. #2 0x00007fb22c760bb0 in pkgDepCache::Update(OpProgress*) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12 No symbol table info available. #3 0x00007fb22c7642ee in pkgDepCache::Init(OpProgress*) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12 No symbol table info available. #4 0x00007fb22c79464d in pkgCacheFile::BuildDepCache(OpProgress*) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12 No symbol table info available. #5 0x00007fb22c7946ca in pkgCacheFile::Open(OpProgress*, bool) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12 No symbol table info available. #6 0x00007fb22ca5351a in ?? () from /usr/lib/python2.7/dist-packages/apt_pkg.so No symbol table info available. #7 0x0000000000472b18 in ?? () No symbol table info available. #8 0x0000000000472f76 in PyObject_Call () No symbol table info available. #9 0x000000000056dfba in PyEval_EvalFrameEx () No symbol table info available. #10 0x0000000000574c76 in PyEval_EvalCodeEx () No symbol table info available. #11 0x000000000056dc3e in PyEval_EvalFrameEx () No symbol table info available. #12 0x0000000000574c76 in PyEval_EvalCodeEx () No symbol table info available. #13 0x00000000005355a0 in ?? () No symbol table info available. #14 0x0000000000472f76 in PyObject_Call () No symbol table info available. #15 0x00000000004bb025 in ?? () No symbol table info available. #16 0x0000000000472f76 in PyObject_Call () No symbol table info available. #17 0x00000000004b9ebe in ?? () No symbol table info available. #18 0x0000000000472bda in ?? () No symbol table info available. #19 0x0000000000472f76 in PyObject_Call () No symbol table info available. #20 0x000000000056dfba in PyEval_EvalFrameEx () No symbol table info available. #21 0x000000000056db80 in PyEval_EvalFrameEx () No symbol table info available. #22 0x000000000056db80 in PyEval_EvalFrameEx () No symbol table info available. #23 0x000000000056db80 in PyEval_EvalFrameEx () No symbol table info available. #24 0x0000000000574c76 in PyEval_EvalCodeEx () No symbol table info available. #25 0x000000000056dc3e in PyEval_EvalFrameEx () No symbol table info available. #26 0x0000000000574c76 in PyEval_EvalCodeEx () No symbol table info available. #27 0x00000000005356d4 in ?? () No symbol table info available. #28 0x0000000000472f76 in PyObject_Call () No symbol table info available. #29 0x000000000056f75b in PyEval_EvalFrameEx () No symbol table info available. #30 0x000000000056db80 in PyEval_EvalFrameEx () No symbol table info available. #31 0x000000000056db80 in PyEval_EvalFrameEx () No symbol table info available. #32 0x0000000000574c76 in PyEval_EvalCodeEx () No symbol table info available. #33 0x00000000005355a0 in ?? () No symbol table info available. #34 0x0000000000472f76 in PyObject_Call () No symbol table info available. #35 0x00000000004bb025 in ?? () No symbol table info available. #36 0x0000000000472f76 in PyObject_Call () No symbol table info available. #37 0x00000000004768e6 in PyEval_CallObjectWithKeywords () No symbol table info available. #38 0x00000000004e5a78 in ?? () No symbol table info available. #39 0x00007fb2379cae9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 No symbol table info available. #40 0x00007fb2367e074d in clone () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #41 0x0000000000000000 in ?? () No symbol table info available.