Package: konqueror
Version: 4:17.08.3-2
Severity: critical
Tags: upstream
Justification: breaks unrelated software

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?
   * What exactly did you do (or not do) that was effective (or
     ineffective)?
   * What was the outcome of this action?
   * What outcome did you expect instead?

trying to run
stack haddock --open lens

I get immediate a crash:

Application: Konqueror (kdeinit5), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f0185b09780 (LWP 29858))]

Thread 18 (Thread 0x7f010ffff700 (LWP 29877)):
#0  0x00007f0176653273 in pa_mainloop_dispatch () at /usr/lib/x86_64-linux-
gnu/libpulse.so.0
#1  0x00007f01766536ce in pa_mainloop_iterate () at /usr/lib/x86_64-linux-
gnu/libpulse.so.0
#2  0x00007f0176653750 in pa_mainloop_run () at /usr/lib/x86_64-linux-
gnu/libpulse.so.0
#3  0x00007f01766615b9 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f01761fbc78 in  () at /usr/lib/x86_64-linux-
gnu/pulseaudio/libpulsecommon-11.1.so
#5  0x00007f018208e5aa in start_thread (arg=0x7f010ffff700) at
pthread_create.c:463
#6  0x00007f0183c0fcbf in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f011cff9700 (LWP 29876)):
#0  0x00007f018209481a in futex_reltimed_wait_cancelable (private=<optimized
out>, reltime=0x7f011cff89d0, expected=0, futex_word=0x7f011cff8b58) at
../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f018209481a in __pthread_cond_wait_common (abstime=0x7f011cff8a70,
mutex=0x7f011cff8b08, cond=0x7f011cff8b30) at pthread_cond_wait.c:533
#2  0x00007f018209481a in __pthread_cond_timedwait (cond=0x7f011cff8b30,
mutex=0x7f011cff8b08, abstime=0x7f011cff8a70) at pthread_cond_wait.c:667
#3  0x00007f0155318552 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#4  0x00007f01552df82e in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#5  0x00007f01552ba4bb in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#6  0x00007f01552b6d38 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#7  0x00007f01552d370b in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#8  0x00007f01552eb3e6 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#9  0x00007f01552e74fb in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#10 0x00007f018208e5aa in start_thread (arg=0x7f011cff9700) at
pthread_create.c:463
#11 0x00007f0183c0fcbf in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f011d7fa700 (LWP 29875)):
#0  0x00007f01820944ec in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x557ac74c25b8) at ../sysdeps/unix/sysv/linux/futex-
internal.h:88
#1  0x00007f01820944ec in __pthread_cond_wait_common (abstime=0x0,
mutex=0x557ac74c24f8, cond=0x557ac74c2590) at pthread_cond_wait.c:502
#2  0x00007f01820944ec in __pthread_cond_wait (cond=0x557ac74c2590,
mutex=0x557ac74c24f8) at pthread_cond_wait.c:655
#3  0x00007f0155a6f8b0 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#4  0x00007f01552eae21 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#5  0x00007f01552e74fb in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#6  0x00007f018208e5aa in start_thread (arg=0x7f011d7fa700) at
pthread_create.c:463
#7  0x00007f0183c0fcbf in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f011dffb700 (LWP 29874)):
#0  0x00007f01820944ec in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x7f011dffab38) at ../sysdeps/unix/sysv/linux/futex-
internal.h:88
#1  0x00007f01820944ec in __pthread_cond_wait_common (abstime=0x0,
mutex=0x7f011dffaae8, cond=0x7f011dffab10) at pthread_cond_wait.c:502
#2  0x00007f01820944ec in __pthread_cond_wait (cond=0x7f011dffab10,
mutex=0x7f011dffaae8) at pthread_cond_wait.c:655
#3  0x00007f01552df8a9 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#4  0x00007f01552df8d7 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#5  0x00007f01552ba46b in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#6  0x00007f01552b6d38 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#7  0x00007f01552d370b in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#8  0x00007f01552eb3e6 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#9  0x00007f01552e74fb in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#10 0x00007f018208e5aa in start_thread (arg=0x7f011dffb700) at
pthread_create.c:463
#11 0x00007f0183c0fcbf in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f011e7fc700 (LWP 29873)):
#0  0x00007f01820944ec in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x557ac74b1328) at ../sysdeps/unix/sysv/linux/futex-
internal.h:88
#1  0x00007f01820944ec in __pthread_cond_wait_common (abstime=0x0,
mutex=0x557ac74b12d8, cond=0x557ac74b1300) at pthread_cond_wait.c:502
#2  0x00007f01820944ec in __pthread_cond_wait (cond=0x557ac74b1300,
mutex=0x557ac74b12d8) at pthread_cond_wait.c:655
#3  0x00007f01552e9ba5 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#4  0x00007f01552ea087 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#5  0x00007f01552eae21 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#6  0x00007f01552e74fb in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#7  0x00007f018208e5aa in start_thread (arg=0x7f011e7fc700) at
pthread_create.c:463
#8  0x00007f0183c0fcbf in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f011effd700 (LWP 29872)):
#0  0x00007f0183c0ffe7 in epoll_wait (epfd=37, events=0x7f01140020d0,
maxevents=32, timeout=9957) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1  0x00007f01531a2408 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#2  0x00007f0153198329 in event_base_loop () at /usr/lib/x86_64-linux-
gnu/libevent-2.1.so.6
#3  0x00007f01552bab83 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#4  0x00007f01552b6d38 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#5  0x00007f01552d370b in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#6  0x00007f0154b72758 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#7  0x00007f0154b72d0b in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#8  0x00007f01552eb498 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#9  0x00007f01552e74fb in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#10 0x00007f018208e5aa in start_thread (arg=0x7f011effd700) at
pthread_create.c:463
#11 0x00007f0183c0fcbf in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f011f7fe700 (LWP 29871)):
#0  0x00007f01820944ec in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x7f011f7fd758) at ../sysdeps/unix/sysv/linux/futex-
internal.h:88
#1  0x00007f01820944ec in __pthread_cond_wait_common (abstime=0x0,
mutex=0x7f011f7fd708, cond=0x7f011f7fd730) at pthread_cond_wait.c:502
#2  0x00007f01820944ec in __pthread_cond_wait (cond=0x7f011f7fd730,
mutex=0x7f011f7fd708) at pthread_cond_wait.c:655
#3  0x00007f01552df8a9 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#4  0x00007f01552df8d7 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#5  0x00007f01552ba46b in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#6  0x00007f01552b6d38 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#7  0x00007f01552d370b in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#8  0x00007f0154b726a8 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#9  0x00007f0154b72cfb in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#10 0x00007f01552eb498 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#11 0x00007f01552e74fb in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#12 0x00007f018208e5aa in start_thread (arg=0x7f011f7fe700) at
pthread_create.c:463
#13 0x00007f0183c0fcbf in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f011ffff700 (LWP 29870)):
#0  0x00007f01820944ec in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x7f011fffe758) at ../sysdeps/unix/sysv/linux/futex-
internal.h:88
#1  0x00007f01820944ec in __pthread_cond_wait_common (abstime=0x0,
mutex=0x7f011fffe708, cond=0x7f011fffe730) at pthread_cond_wait.c:502
#2  0x00007f01820944ec in __pthread_cond_wait (cond=0x7f011fffe730,
mutex=0x7f011fffe708) at pthread_cond_wait.c:655
#3  0x00007f01552df8a9 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#4  0x00007f01552df8d7 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#5  0x00007f01552ba46b in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#6  0x00007f01552b6d38 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#7  0x00007f01552d370b in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#8  0x00007f0154b725f8 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#9  0x00007f0154b72ceb in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#10 0x00007f01552eb498 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#11 0x00007f01552e74fb in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#12 0x00007f018208e5aa in start_thread (arg=0x7f011ffff700) at
pthread_create.c:463
#13 0x00007f0183c0fcbf in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f013cff9700 (LWP 29869)):
#0  0x00007f01820944ec in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x7f013cff8758) at ../sysdeps/unix/sysv/linux/futex-
internal.h:88
#1  0x00007f01820944ec in __pthread_cond_wait_common (abstime=0x0,
mutex=0x7f013cff8708, cond=0x7f013cff8730) at pthread_cond_wait.c:502
#2  0x00007f01820944ec in __pthread_cond_wait (cond=0x7f013cff8730,
mutex=0x7f013cff8708) at pthread_cond_wait.c:655
#3  0x00007f01552df8a9 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#4  0x00007f01552df8d7 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#5  0x00007f01552ba46b in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#6  0x00007f01552b6d38 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#7  0x00007f01552d370b in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#8  0x00007f0154b72548 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#9  0x00007f0154b72cdb in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#10 0x00007f01552eb498 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#11 0x00007f01552e74fb in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#12 0x00007f018208e5aa in start_thread (arg=0x7f013cff9700) at
pthread_create.c:463
#13 0x00007f0183c0fcbf in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f013d7fa700 (LWP 29868)):
#0  0x00007f0183c0ffe7 in epoll_wait (epfd=31, events=0x7f01200020d0,
maxevents=32, timeout=-1) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1  0x00007f01531a2408 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#2  0x00007f0153198329 in event_base_loop () at /usr/lib/x86_64-linux-
gnu/libevent-2.1.so.6
#3  0x00007f01552baa9d in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#4  0x00007f01552b6d38 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#5  0x00007f01552d370b in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#6  0x00007f0154b72498 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#7  0x00007f0154b72ccb in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#8  0x00007f01552eb498 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#9  0x00007f01552e74fb in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#10 0x00007f018208e5aa in start_thread (arg=0x7f013d7fa700) at
pthread_create.c:463
#11 0x00007f0183c0fcbf in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f013dffb700 (LWP 29867)):
#0  0x00007f01820944ec in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x7f013dffa758) at ../sysdeps/unix/sysv/linux/futex-
internal.h:88
#1  0x00007f01820944ec in __pthread_cond_wait_common (abstime=0x0,
mutex=0x7f013dffa708, cond=0x7f013dffa730) at pthread_cond_wait.c:502
#2  0x00007f01820944ec in __pthread_cond_wait (cond=0x7f013dffa730,
mutex=0x7f013dffa708) at pthread_cond_wait.c:655
#3  0x00007f01552df8a9 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#4  0x00007f01552df8d7 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#5  0x00007f01552ba46b in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#6  0x00007f01552b6d38 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#7  0x00007f01552d370b in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#8  0x00007f0154b723e8 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#9  0x00007f0154b72cbb in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#10 0x00007f01552eb498 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#11 0x00007f01552e74fb in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#12 0x00007f018208e5aa in start_thread (arg=0x7f013dffb700) at
pthread_create.c:463
#13 0x00007f0183c0fcbf in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f013e7fc700 (LWP 29866)):
#0  0x00007f018209481a in futex_reltimed_wait_cancelable (private=<optimized
out>, reltime=0x7f013e7fbbe0, expected=0, futex_word=0x7f0138004520) at
../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f018209481a in __pthread_cond_wait_common (abstime=0x7f013e7fbc80,
mutex=0x7f01380044d0, cond=0x7f01380044f8) at pthread_cond_wait.c:533
#2  0x00007f018209481a in __pthread_cond_timedwait (cond=0x7f01380044f8,
mutex=0x7f01380044d0, abstime=0x7f013e7fbc80) at pthread_cond_wait.c:667
#3  0x00007f0155318552 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#4  0x00007f01552ee6a9 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#5  0x00007f01552eec0b in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#6  0x00007f01552e74fb in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#7  0x00007f018208e5aa in start_thread (arg=0x7f013e7fc700) at
pthread_create.c:463
#8  0x00007f0183c0fcbf in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f013effd700 (LWP 29865)):
#0  0x00007f018209481a in futex_reltimed_wait_cancelable (private=<optimized
out>, reltime=0x7f013effcbe0, expected=0, futex_word=0x7f0138004524) at
../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f018209481a in __pthread_cond_wait_common (abstime=0x7f013effcc80,
mutex=0x7f01380044d0, cond=0x7f01380044f8) at pthread_cond_wait.c:533
#2  0x00007f018209481a in __pthread_cond_timedwait (cond=0x7f01380044f8,
mutex=0x7f01380044d0, abstime=0x7f013effcc80) at pthread_cond_wait.c:667
#3  0x00007f0155318552 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#4  0x00007f01552ee6a9 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#5  0x00007f01552eec0b in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#6  0x00007f01552e74fb in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#7  0x00007f018208e5aa in start_thread (arg=0x7f013effd700) at
pthread_create.c:463
#8  0x00007f0183c0fcbf in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f013f7fe700 (LWP 29864)):
#0  0x00007f0183c0796f in __GI___select (nfds=31, readfds=0x7f013f7fd5c0,
writefds=0x0, exceptfds=0x0, timeout=0x0) at
../sysdeps/unix/sysv/linux/select.c:41
#1  0x00007f015843990f in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#2  0x00007f0155313993 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#3  0x00007f01552b7990 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#4  0x00007f01552b8fe8 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#5  0x00007f01552b937b in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#6  0x00007f01552ba421 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#7  0x00007f01552b6d38 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#8  0x00007f01552d370b in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#9  0x00007f01552eb3e6 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#10 0x00007f01552e74fb in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#11 0x00007f018208e5aa in start_thread (arg=0x7f013f7fe700) at
pthread_create.c:463
#12 0x00007f0183c0fcbf in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f013ffff700 (LWP 29863)):
#0  0x00007f0183c0ffe7 in epoll_wait (epfd=25, events=0x7f01380020f0,
maxevents=32, timeout=-1) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1  0x00007f01531a2408 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#2  0x00007f0153198329 in event_base_loop () at /usr/lib/x86_64-linux-
gnu/libevent-2.1.so.6
#3  0x00007f01552baa9d in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#4  0x00007f01552b6d38 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#5  0x00007f01552d370b in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#6  0x00007f01552eb3e6 in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#7  0x00007f01552e74fb in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineCore.so.5
#8  0x00007f018208e5aa in start_thread (arg=0x7f013ffff700) at
pthread_create.c:463
#9  0x00007f0183c0fcbf in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f0165ff5700 (LWP 29860)):
#0  0x00007f0183c055d9 in __GI___poll (fds=0x7f0160004db0, nfds=3, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f01801f9439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f01801f954c in g_main_context_iteration () at /usr/lib/x86_64-linux-
gnu/libglib-2.0.so.0
#3  0x00007f01841b60ef in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f018415b2aa in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f0183f7a35a in QThread::exec() () at /usr/lib/x86_64-linux-
gnu/libQt5Core.so.5
#6  0x00007f017bdaee45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f0183f7f22d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f018208e5aa in start_thread (arg=0x7f0165ff5700) at
pthread_create.c:463
#9  0x00007f0183c0fcbf in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f016ec51700 (LWP 29859)):
#0  0x00007f0183c055d9 in __GI___poll (fds=0x7f016ec50d28, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f0184f7e0f7 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f0184f7fd1a in xcb_wait_for_event () at /usr/lib/x86_64-linux-
gnu/libxcb.so.1
#3  0x00007f0170db4029 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f0183f7f22d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f018208e5aa in start_thread (arg=0x7f016ec51700) at
pthread_create.c:463
#6  0x00007f0183c0fcbf in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f0185b09780 (LWP 29858)):
[KCrash Handler]
#6  0x00007f0183b4de7b in __GI_raise (sig=sig@entry=6) at
../sysdeps/unix/sysv/linux/raise.c:51
#7  0x00007f0183b4f231 in __GI_abort () at abort.c:79
#8  0x00007f0183f6a0c7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f01727ef420 in  () at /usr/lib/x86_64-linux-
gnu/libQt5QuickWidgets.so.5
#10 0x00007f01727ef78a in  () at /usr/lib/x86_64-linux-
gnu/libQt5QuickWidgets.so.5
#11 0x00007f01727f199e in QQuickWidget::resizeEvent(QResizeEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5
#12 0x00007f015a735edd in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineWidgets.so.5
#13 0x00007f018263b8f2 in QWidget::event(QEvent*) () at /usr/lib/x86_64-linux-
gnu/libQt5Widgets.so.5
#14 0x00007f015a7361fb in  () at /usr/lib/x86_64-linux-
gnu/libQt5WebEngineWidgets.so.5
#15 0x00007f01825fc63c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f0182603f04 in QApplication::notify(QObject*, QEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f018415d258 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f0182633dfb in QWidgetPrivate::sendPendingMoveAndResizeEvents(bool,
bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007f0182637bd3 in QWidgetPrivate::show_helper() () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007f0182637aee in QWidgetPrivate::showChildren(bool) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007f0182637bef in QWidgetPrivate::show_helper() () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007f018263a8eb in QWidget::setVisible(bool) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007f0182637b40 in QWidgetPrivate::showChildren(bool) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007f0182637bef in QWidgetPrivate::show_helper() () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007f0182637aee in QWidgetPrivate::showChildren(bool) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#26 0x00007f0182637bef in QWidgetPrivate::show_helper() () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007f0182637aee in QWidgetPrivate::showChildren(bool) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007f0182637bef in QWidgetPrivate::show_helper() () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007f018263a8eb in QWidget::setVisible(bool) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007f0182637b40 in QWidgetPrivate::showChildren(bool) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007f0182637bef in QWidgetPrivate::show_helper() () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#32 0x00007f0182637aee in QWidgetPrivate::showChildren(bool) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#33 0x00007f0182637bef in QWidgetPrivate::show_helper() () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#34 0x00007f018263a8eb in QWidget::setVisible(bool) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#35 0x00007f0173d04dce in  () at /usr/lib/x86_64-linux-
gnu/libkdeinit5_konqueror.so
#36 0x00007f0173d08bd0 in kdemain () at /usr/lib/x86_64-linux-
gnu/libkdeinit5_konqueror.so
#37 0x0000557ac67ae69d in  ()
#38 0x0000557ac67afc8b in  ()
#39 0x0000557ac67b0568 in  ()
#40 0x0000557ac67ab00c in  ()
#41 0x00007f0183b3aa87 in __libc_start_main (main=0x557ac67aa6c0, argc=1,
argv=0x7ffeaab71118, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffeaab71108) at ../csu/libc-start.c:310
#42 0x0000557ac67abc7a in _start ()



This also happens in anaconda-navigator



-- System Information:
Debian Release: buster/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.15.0-1-amd64 (SMP w/12 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE= 
(charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages konqueror depends on:
ii  dolphin                  4:17.08.3-2
ii  install-info             6.5.0.dfsg.1-2
ii  kio                      5.44.0-2
ii  libc6                    2.27-3
ii  libkf5archive5           5.44.0-1
ii  libkf5bookmarks5         5.44.0-1
ii  libkf5codecs5            5.44.0-1
ii  libkf5completion5        5.44.0-1
ii  libkf5configcore5        5.44.0-1
ii  libkf5configgui5         5.44.0-1
ii  libkf5configwidgets5     5.44.0-1
ii  libkf5coreaddons5        5.44.0-1
ii  libkf5dbusaddons5        5.44.0-1
ii  libkf5i18n5              5.44.0-1
ii  libkf5iconthemes5        5.44.0-1
ii  libkf5itemviews5         5.44.0-1
ii  libkf5jobwidgets5        5.44.0-1
ii  libkf5kcmutils5          5.44.0-1
ii  libkf5kdelibs4support5   5.44.0-2
ii  libkf5khtml5             5.44.0-1
ii  libkf5kiocore5           5.44.0-2
ii  libkf5kiofilewidgets5    5.44.0-2
ii  libkf5kiogui5            5.44.0-2
ii  libkf5kiowidgets5        5.44.0-2
ii  libkf5konq6              4:17.08.3-2
ii  libkf5parts5             5.44.0-1
ii  libkf5service-bin        5.44.0-1
ii  libkf5service5           5.44.0-1
ii  libkf5sonnetcore5        5.44.0-1
ii  libkf5sonnetui5          5.44.0-1
ii  libkf5widgetsaddons5     5.44.0-1
ii  libkf5windowsystem5      5.44.0-1
ii  libkf5xmlgui5            5.44.0-2
ii  libqt5core5a             5.9.2+dfsg-12
ii  libqt5dbus5              5.9.2+dfsg-12
ii  libqt5gui5               5.9.2+dfsg-12
ii  libqt5network5           5.9.2+dfsg-12
ii  libqt5printsupport5      5.9.2+dfsg-12
ii  libqt5webenginewidgets5  5.9.2+dfsg-3
ii  libqt5widgets5           5.9.2+dfsg-12
ii  libqt5x11extras5         5.9.2-1
ii  libqt5xml5               5.9.2+dfsg-12
ii  libstdc++6               8-20180402-1

Versions of packages konqueror recommends:
ii  kfind  4:17.08.3-2

Versions of packages konqueror suggests:
ii  konq-plugins  4:17.08.3-2

-- no debconf information

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