I ran gimp under gdb and got the more useful stack trace below, though there still isn't enough info to figure out what's going on.

#0  __wcslen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:76
#1  0x00007ffff6ad0d8e in __GI___wcsxfrm_l
    (dest=0x0, src=0x0, n=0, l=<optimized out>) at ../string/strxfrm_l.c:676
#2  0x00007ffff6ede8be in g_utf8_collate_key ()
    at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x0000555555994fab in gimp_object_name_normalize (object=0x555557d8ae10)
    at core/gimpobject.c:399
#4  0x00005555557a19a0 in gimp_object_name_collate
    (object2=0x555557d8ae10, object1=0x555557daeea0) at core/gimpobject.c:387
#5  gimp_device_info_compare (a=0x555557daeea0, b=0x555557d8ae10)
    at widgets/gimpdeviceinfo.c:942
#6  0x00007ffff6ebc375 in g_queue_insert_sorted ()
    at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x0000555555994f09 in gimp_list_add
    (container=0x555557e0c610, object=0x555557d8ae10) at core/gimplist.c:261
#8  0x00007ffff6fa5130 in g_closure_invoke ()
    at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#9  0x00007ffff6fd25f0 in ??? () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#10 0x00007ffff6fc39b1 in ??? () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#11 0x00007ffff6fc3bd6 in g_signal_emit_valist ()
    at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#12 0x00007ffff6fc3c93 in g_signal_emit ()
    at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#13 0x000055555591ec43 in gimp_container_add
    (container=0x555557e0c610, object=0x555557d8ae10)
    at core/gimpcontainer.c:632
#14 0x00005555557a8a6c in gimp_device_manager_device_added
    (manager=0x555557e0c610, device=0x555555f835d0, gdk_display=0x555555f89be0)
    at widgets/gimpdevicemanager.c:423
#15 gimp_device_manager_display_opened
    (disp_manager=<optimized out>, manager=0x555557e0c610, gdk_display=0x555555f89be0) at widgets/gimpdevicemanager.c:360
#16 gimp_device_manager_display_opened
    (disp_manager=<optimized out>, gdk_display=0x555555f89be0, manager=0x555557e0c610) at widgets/gimpdevicemanager.c:334
#17 0x00005555557a8b36 in gimp_device_manager_constructed
    (object=0x555557e0c610) at widgets/gimpdevicemanager.c:168
#18 0x00007ffff6fb52c3 in ??? () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#19 0x00007ffff6fb7273 in g_object_new_valist ()
    at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#20 0x00007ffff6fb75cd in g_object_new ()
    at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#21 0x00005555557a77d5 in gimp_device_manager_new
    (gimp=gimp@entry=0x555556031b40) at widgets/gimpdevicemanager.c:271
#22 0x00005555557a7888 in gimp_devices_init (gimp=0x555556031b40)
    at widgets/gimpdevices.c:66
#23 0x00005555556432a2 in gui_restore_callback
    (gimp=0x555556031b40, status_callback=0x55555563c770 <splash_update(gchar const*, gchar const*, gdouble)>) at gui/gui.c:561
#24 0x00007ffff6fa5130 in g_closure_invoke ()
    at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#25 0x00007ffff6fd24ac in ??? () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#26 0x00007ffff6fc39b1 in ??? () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#27 0x00007ffff6fc3bd6 in g_signal_emit_valist ()
    at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#28 0x00007ffff6fc3c93 in g_signal_emit ()
    at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#29 0x00005555558f5691 in gimp_restore
    (gimp=0x555556031b40, status_callback=0x55555563c770 <splash_update(gchar const*, gchar const*, gdouble)>, error=<optimized out>) at core/gimp.c:844
#30 0x000055555564533b in app_run