#0  0x00007fed6dd76267 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:55
        resultvar = 0
        pid = 681
        selftid = 823
#1  0x00007fed6dd77eca in __GI_abort () at abort.c:89
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x4, sa_sigaction = 0x4}, sa_mask = {__val = {140657735421749, 94642395798096, 140657664129680, 2791422528, 140657753292800, 140657728229416, 140657737912626, 140657737913264, 140657664130336, 94642395788784, 140657727133852, 140657728248320, 140657728229416, 140657664129864, 140657726620848, 140657728213545}}, sa_flags = 1869316096, sa_restorer = 0x7fed6ded1028}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007fed6dd6f03d in __assert_fail_base (fmt=0x7fed6ded1028 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x7fed6e80d132 "*_head == _item", file=file@entry=0x7fed6e80d117 "entrygroup.c", line=line@entry=245, function=function@entry=0x7fed6e80d3b0 "avahi_entry_group_free") at assert.c:92
        str = 0x7fed64000920 ""
        total = 4096
#3  0x00007fed6dd6f0f2 in __GI___assert_fail (assertion=0x7fed6e80d132 "*_head == _item", file=0x7fed6e80d117 "entrygroup.c", line=245, function=0x7fed6e80d3b0 "avahi_entry_group_free") at assert.c:101
No locals.
#4  0x00007fed6e806a37 in avahi_entry_group_free () from /tmp/apport_sandbox_ge9Ymp/usr/lib/x86_64-linux-gnu/libavahi-client.so.3
No symbol table info available.
#5  0x00005613a50102d2 in dnssdDeregisterInstance (srv=0x5613a662d9d0, from_callback=<optimized out>) at dirsvc.c:684
No locals.
#6  0x00005613a5010352 in dnssdDeregisterPrinter (p=0x5613a662d230, clear_name=clear_name@entry=1, from_callback=from_callback@entry=1) at dirsvc.c:711
No locals.
#7  0x00005613a5010868 in dnssdDeregisterAllPrinters (from_callback=from_callback@entry=1) at dirsvc.c:659
        p = <optimized out>
#8  0x00005613a5011bed in dnssdClientCallback (c=0x5613a6810e60, state=<optimized out>, userdata=<optimized out>) at dirsvc.c:602
        error = 22035
#9  0x00007fed6e805705 in ?? () from /tmp/apport_sandbox_ge9Ymp/usr/lib/x86_64-linux-gnu/libavahi-client.so.3
No symbol table info available.
#10 0x00007fed6ec3c0e5 in dbus_connection_dispatch (connection=0x5613a680b3e0) at ../../dbus/dbus-connection.c:4703
        filter = <optimized out>
        next = 0x0
        message = 0x5613a680a660
        link = <optimized out>
        reply_serial = <optimized out>
        filter_list_copy = 0x5613a663e9f0
        status = <optimized out>
        found_object = 1846676921
        message_link = 0x5613a66d4dc8
        result = DBUS_HANDLER_RESULT_NOT_YET_HANDLED
        pending = <optimized out>
        connection = 0x5613a680b3e0
        status = <optimized out>
#11 0x00007fed6e80c686 in ?? () from /tmp/apport_sandbox_ge9Ymp/usr/lib/x86_64-linux-gnu/libavahi-client.so.3
No symbol table info available.
#12 0x00007fed6ea20638 in avahi_simple_poll_dispatch () from /tmp/apport_sandbox_ge9Ymp/usr/lib/x86_64-linux-gnu/libavahi-common.so.3
No symbol table info available.
#13 0x00007fed6ea2091d in avahi_simple_poll_loop () from /tmp/apport_sandbox_ge9Ymp/usr/lib/x86_64-linux-gnu/libavahi-common.so.3
No symbol table info available.
#14 0x00007fed6ea209e4 in ?? () from /tmp/apport_sandbox_ge9Ymp/usr/lib/x86_64-linux-gnu/libavahi-common.so.3
No symbol table info available.
#15 0x00007fed6e1186aa in start_thread (arg=0x7fed6a1b0700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7fed6a1b0700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140657664132864, -6820305817266537409, 0, 140720518959663, 140657664133568, 94642395788784, 6810484747501583423, 6810493622238460991}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#16 0x00007fed6de47eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
No locals.