Thread 3 (Thread 0x7f42b00f4700 (LWP 2904)):
#0 0x00007f42b5890ef3 in select () at ../sysdeps/unix/syscall-template.S:81
#1 0x00007f42b611ed35 in pkgAcquire::Run(int) ()
from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12
#2 0x00000000004130b7 in AptWorker::commitChanges() ()
#3 0x0000000000414565 in AptWorker::runTransaction(Transaction*) ()
#4 0x00007f42b6d836ca in QObject::event(QEvent*) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f42b6d51aa5 in QCoreApplication::notify(QObject*, QEvent*) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x00007f42b6d51bdb in QCoreApplication::notifyInternal(QObject*, QEvent*) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7 0x00007f42b6d53c4b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8 0x00007f42b6daa6a3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9 0x00007f42b470cc3d in g_main_context_dispatch ()
from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f42b470cf20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f42b470cfcc in g_main_context_iteration ()
from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007f42b6daaab7 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f42b6d4f392 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f42b6b0ea94 in QThread::exec() ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f42b6b13a4e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f42b55890a5 in start_thread (arg=0x7f42b00f4700) at pthread_create.c:309
#17 0x00007f42b589957d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
Thread 2 (Thread 0x7f42af8f3700 (LWP 2905)):
#0 0x00007f42b588f0cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1 0x00007f42b470cebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007f42b470d242 in g_main_loop_run ()
from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007f42b3861426 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4 0x00007f42b4733955 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5 0x00007f42b55890a5 in start_thread (arg=0x7f42af8f3700) at pthread_create.c:309
#6 0x00007f42b589957d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
Thread 1 (Thread 0x7f42b7124900 (LWP 2903)):
#0 0x00007f42b588f0cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1 0x00007f42b470cebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007f42b470cfcc in g_main_context_iteration ()
from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007f42b6daaab7 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007f42b6d4f392 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f42b6d56fdc in QCoreApplication::exec() ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x000000000040f1f4 in main ()