.
Thread 6 (Thread 0x7feb52781700 (LWP 1226)):
#0  0x00007feb6a58e901 in __GI___poll (fds=0x55b1e545c830, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1  0x00007feb6aad0169 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x55b1e545c830, timeout=<optimized out>, context=0x55b1e545d040) at ../../../../glib/gmain.c:4187
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7feb6aadf640 <g_poll>
#2  g_main_context_iterate (context=0x55b1e545d040, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3881
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x55b1e545c830
#3  0x00007feb6aad0502 in g_main_loop_run (loop=0x7feb400023d0) at ../../../../glib/gmain.c:4082
        __func__ = "g_main_loop_run"
#4  0x00007feb6b8e5a23 in e_cal_resolve_tzid_cb (tzid=0x7feb400023d0 "@\320E\345\261U", data=0x55b1e545d040) at ./src/calendar/libecal/e-cal.c:1384
        ecal = <optimized out>
        zone = 0x0
        __func__ = "e_cal_resolve_tzid_cb"
#5  0x00007feb6a86d7fc in start_thread (arg=0x7feb52781700) at pthread_create.c:465
        pd = 0x7feb52781700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140648677644032, -5196125487712292895, 140726491808238, 140726491808239, 140648677644032, 140648677644736, 5203068888009289697, 5203190751052050401}, 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"
#6  0x00007feb6a59ab0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.
.
Thread 5 (Thread 0x7feb60d46700 (LWP 1221)):
#0  0x00007feb6a58e901 in __GI___poll (fds=0x55b1e5421c20, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1  0x00007feb6aad0169 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x55b1e5421c20, timeout=<optimized out>, context=0x55b1e5421d30) at ../../../../glib/gmain.c:4187
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7feb6aadf640 <g_poll>
#2  g_main_context_iterate (context=context@entry=0x55b1e5421d30, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3881
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x55b1e5421c20
#3  0x00007feb6aad027c in g_main_context_iteration (context=context@entry=0x55b1e5421d30, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3947
        retval = <optimized out>
#4  0x00007feb60d4e46d in dconf_gdbus_worker_thread (user_data=0x55b1e5421d30) at dconf-gdbus-thread.c:82
        context = 0x55b1e5421d30
#5  0x00007feb6aaf7645 in g_thread_proxy (data=0x55b1e54071e0) at ../../../../glib/gthread.c:784
        thread = 0x55b1e54071e0
#6  0x00007feb6a86d7fc in start_thread (arg=0x7feb60d46700) at pthread_create.c:465
        pd = 0x7feb60d46700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140648918574848, -5196125487712292895, 140726491806670, 140726491806671, 140648918574848, 140648918575552, 5203177981789220833, 5203190751052050401}, 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"
#7  0x00007feb6a59ab0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.
.
Thread 4 (Thread 0x7feb61754700 (LWP 1167)):
#0  0x00007feb6a58e901 in __GI___poll (fds=0x7feb540109a0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1  0x00007feb6aad0169 in g_main_context_poll (priority=<optimized out>, n_fds=2, fds=0x7feb540109a0, timeout=<optimized out>, context=0x7feb5400e6c0) at ../../../../glib/gmain.c:4187
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7feb6aadf640 <g_poll>
#2  g_main_context_iterate (context=0x7feb5400e6c0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3881
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = 2
        fds = 0x7feb540109a0
#3  0x00007feb6aad0502 in g_main_loop_run (loop=0x7feb5400e800) at ../../../../glib/gmain.c:4082
        __func__ = "g_main_loop_run"
#4  0x00007feb6b0b9b26 in gdbus_shared_thread_func (user_data=0x7feb5400e690) at ../../../../gio/gdbusprivate.c:275
        data = 0x7feb5400e690
#5  0x00007feb6aaf7645 in g_thread_proxy (data=0x55b1e5407ad0) at ../../../../glib/gthread.c:784
        thread = 0x55b1e5407ad0
#6  0x00007feb6a86d7fc in start_thread (arg=0x7feb61754700) at pthread_create.c:465
        pd = 0x7feb61754700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140648929117952, -5196125487712292895, 140648937507598, 140648937507599, 140648929117952, 140648929118656, 5203176597736009697, 5203190751052050401}, 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"
#7  0x00007feb6a59ab0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.
.
Thread 3 (Thread 0x7feb53fff700 (LWP 1222)):
#0  0x00007feb6a58e901 in __GI___poll (fds=0x7feb48092b70, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1  0x00007feb6aad0169 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7feb48092b70, timeout=<optimized out>, context=0x55b1e5423170) at ../../../../glib/gmain.c:4187
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7feb6aadf640 <g_poll>
#2  g_main_context_iterate (context=0x55b1e5423170, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3881
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7feb48092b70
#3  0x00007feb6aad0502 in g_main_loop_run (loop=0x55b1e54232b0) at ../../../../glib/gmain.c:4082
        __func__ = "g_main_loop_run"
#4  0x00007feb6b3ef4b1 in source_registry_sources_remove (source=0x7feb48092f20, registry=0x55b1e540a780) at ./src/libedataserver/e-source-registry.c:450
        uid = 0xfffffffffffffdfc <error: Cannot access memory at address 0xfffffffffffffdfc>
        removed = <optimized out>
#5  source_registry_object_removed_by_owner (dbus_object=<optimized out>, registry=0x55b1e540a780) at ./src/libedataserver/e-source-registry.c:931
        closure = <optimized out>
        idle_source = <optimized out>
        object_path = <optimized out>
#6  source_registry_object_removed_cb (object_manager=<optimized out>, dbus_object=<optimized out>, registry=0x55b1e540a780) at ./src/libedataserver/e-source-registry.c:984
        name_owner = 0xc0 <error: Cannot access memory at address 0xc0>
#7  0x00007feb53fff700 in ?? ()
No symbol table info available.
#8  0x00007feb53fff9c0 in ?? ()
No symbol table info available.
#9  0x00007feb6aaf7645 in g_thread_proxy (data=0x7ffd708e032f) at ../../../../glib/gthread.c:784
        thread = 0x7ffd708e032f
#10 0x00007feb6a86d7fc in start_thread (arg=0x7feb53fff700) at pthread_create.c:465
        pd = 0x7feb53fff700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140648703325952, -5196125487712292895, 140726491808558, 140726491808559, 140648703325952, 140648703326656, 5203065605580533729, 5203190751052050401}, 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"
#11 0x00007feb6a59ab0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.
.
Thread 2 (Thread 0x7feb62756700 (LWP 1165)):
#0  0x00007feb6a58e901 in __GI___poll (fds=0x55b1e5408050, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1  0x00007feb6aad0169 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x55b1e5408050, timeout=<optimized out>, context=0x55b1e5406d30) at ../../../../glib/gmain.c:4187
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7feb6aadf640 <g_poll>
#2  g_main_context_iterate (context=context@entry=0x55b1e5406d30, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3881
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x55b1e5408050
#3  0x00007feb6aad027c in g_main_context_iteration (context=0x55b1e5406d30, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3947
        retval = <optimized out>
#4  0x00007feb6aad02c1 in glib_worker_main (data=<optimized out>) at ../../../../glib/gmain.c:5742
No locals.
#5  0x00007feb6aaf7645 in g_thread_proxy (data=0x55b1e5407000) at ../../../../glib/gthread.c:784
        thread = 0x55b1e5407000
#6  0x00007feb6a86d7fc in start_thread (arg=0x7feb62756700) at pthread_create.c:465
        pd = 0x7feb62756700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140648945903360, -5196125487712292895, 140726491809358, 140726491809359, 140648945903360, 140648945904064, 5203174399786495969, 5203190751052050401}, 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"
#7  0x00007feb6a59ab0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.
.
Thread 1 (Thread 0x7feb6bd25140 (LWP 1154)):
#0  icaltimezone_get_utc_offset (zone=0x1, tt=0x7ffd708df390, is_daylight=0x0) at ./src/libical/icaltimezone.c:841
        prev_zone_change = <optimized out>
        cmp = <optimized out>
        want_daylight = <optimized out>
        tmp_change = {utc_offset = 8, prev_utc_offset = 0, year = -2012676864, month = -1893880463, day = 1802063728, hour = 32747, minute = 1073862736, second = 32747, is_daylight = 2023}
        change_num_to_use = <optimized out>
        step = <optimized out>
        utc_offset_change = <optimized out>
        zone_change = <optimized out>
        tt_change = {utc_offset = 141, prev_utc_offset = 0, year = -445187280, month = 21937, day = -445183264, hour = 21937, minute = 251, second = 0, is_daylight = 1}
        change_num = <optimized out>
        found_change = <optimized out>
        tt = 0x7ffd708df390
        zone = 0x1
        is_daylight = 0x0
#1  0x00007feb6b69687d in icaltimezone_convert_time (tt=tt@entry=0x7ffd708df390, from_zone=from_zone@entry=0x1, to_zone=to_zone@entry=0x7feb6b8c4420 <utc_timezone>) at ./src/libical/icaltimezone.c:808
        utc_offset = <optimized out>
        is_daylight = 32765
#2  0x00007feb6b69286f in icaltime_convert_to_zone (tt=..., zone=0x7feb6b8c4420 <utc_timezone>) at ./src/libical/icaltime.c:981
        from_zone = 0x1
        ret = {year = 1073862736, month = 32747, day = 2018, hour = 1, minute = 3, second = 0, is_date = 0, is_daylight = 0, zone = 0x1}
#3  0x00007feb6b692a84 in icaltime_compare (a_in=..., b_in=...) at ./src/libical/icaltime.c:737
        a = {year = 2017, month = 11, day = 27, hour = 12, minute = 11, second = 0, is_date = 0, is_daylight = <optimized out>, zone = <optimized out>}
        b = <optimized out>
#4  0x00007feb6b8ffcec in cal_obj_remove_duplicates_and_invalid_dates (occs=<optimized out>) at ./src/calendar/libecal/e-cal-recur.c:2712
        occ = <optimized out>
        len = <optimized out>
        i = <optimized out>
        prev_occ = <optimized out>
        j = <optimized out>
        year = <optimized out>
        month = <optimized out>
        days = <optimized out>
        keep_occ = <optimized out>
#5  cal_obj_expand_recurrence (event_start=0x0, zone=0x7ffd708e03c0, recur=0x0, interval_start=0x1, interval_end=0xc0000001b, finished=0x7ffd708e03f0) at ./src/calendar/libecal/e-cal-recur.c:2299
        vtable = {find_start_position = 0x7feb6b8fdce0 <cal_obj_secondly_find_start_position>, find_next_position = 0x7feb6b8fdc70 <cal_obj_secondly_find_next_position>, bymonth_filter = 0x7feb6b8fe740 <cal_obj_bymonth_filter>, byweekno_filter = 0x0, byyearday_filter = <optimized out>, bymonthday_filter = <optimized out>, byday_filter = <optimized out>, byhour_filter = <optimized out>, byminute_filter = <optimized out>, bysecond_filter = <optimized out>}
        event_end = 0x0
        event_end_cotime = {year = 0, month = 0 '\000', day = 0 '\000', hour = 0 '\000', minute = 0 '\000', second = 0 '\000', flags = 0 '\000'}
        recur_data = {recur = 0x0, weekday_offset = 1073862736, months = "\353\177\000\000\200\366\215p\375\177\000", yeardays = "\000\375\b\210q\255\035\217P\337k\345\261U", '\000' <repeats 26 times>, "\200\366\215p\375\177\000\000e\001\220k\353\177\000\000\000\000\000\000\000\000\000\000P\276\217k\353\177\000\000\060\004\216p\375\177\000\000@R\nH\353\177\000\000\320\300\217k\353\177\000\000\060\004\216p\375\177\000\000@\320n\345\261U\000\000\001\000\000\000\001", '\000' <repeats 11 times>, "\360\003\216p\375\177\000\000p\334n\345\261U\000\000\310\064Qj\353\177", '\000' <repeats 18 times>, "\342\a\000\000\001\000\000\000\003", '\000' <repeats 15 times>, "\001", '\000' <repeats 15 times>..., neg_yeardays = "\000\247\027Qj\353\177\000\000/\367\215p\375\177\000\000\377\017\000\000\000\000\000\000\000\360\377\377\377\377\377\377\000\020\002\000\000\000\000\000\000\300s\345\261U\000\000\001\020\000\000\000\000\000\000s\177\022k\353\177\000\000)\240Mj\353\177\000\000\"\351\261j\353\177\000\000)\240Mj\353\177\000\000\004\000\000\000\000\000\000\000\240\367\215p\375\177\000\000\001\000\000\000\000\000\000\000yU\255j\353\177\000\000\004\000\000\000\000\000\000\000J\353\256j\353\177\000\000P\v\000\000\000\000\000\000\001\000\000\000\000\000\000\000\001\000\000\000\000\000\000\000P\375\215p\375\177\000\000@\375\215p\375\177\000\000p\177\022k\353\177\000\000\300\376\215p\375\177\000\000\000\000\000\000\000\000\000\000"..., monthdays = "\000\000\000\000\000\000\000\000\000\000h\r\000\000\000\000\000\000\002\000\000\000\000\000\000\000q\177\022k\353\177", neg_monthdays = "\000\000\000\000\000\000\v\000\000\000\060\376\215p\375\177\000\000t\177\022k\353\177\000\000\260\377\215p\375\177", weekdays = "\000\000\000\000\000\000", hours = "\000\000\000s\177\022k\353\177\000\000)\240Mj\353\177\000\000\357\370\215p\375", minutes = "\177\000\000\360\370\215p\375\177\000\000p\f\206j\353\177\000\000x\371\215p\375\177\000\000\240\371\215p\375\177\000\000\002\000\000\000\177\177\177\177\177\177\177\177", '\000' <repeats 12 times>, seconds = "\000\000\000\177\177\177\177\b\000\000\000\060\000\000\000\240\377\215p\375\177\000\000\340\376\215p\375\177\000\000\001\000\000\000\177\177\177\177\377\377\377\177\261U\000\000\000\343c\345\261U\000\000\000\000\000\000\375\177"}
        occ = {year = 55376, month = 1 '\001', day = 64 '@', hour = 235 '\353', minute = 127 '\177', second = 0 '\000', flags = 0 '\000'}
        cotime = <optimized out>
        all_occs = 0x0
        occs = <optimized out>
        len = <optimized out>
#6  0x00007feb6b127f74 in ?? () from /tmp/apport_sandbox_e9RZZx/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#7  0x7f7f7f7f7f7f7f7f in ?? ()
No symbol table info available.
#8  0x000055b1e56d44a0 in ?? ()
No symbol table info available.
#9  0x00000000000005a0 in ?? ()
No symbol table info available.
#10 0x0000000000000b80 in ?? ()
No symbol table info available.
#11 0x000000000000002d in ?? ()
No symbol table info available.
#12 0x0000005d00000011 in ?? ()
No symbol table info available.
#13 0x000000000000000f in ?? ()
No symbol table info available.
#14 0x0000000000000101 in ?? ()
No symbol table info available.
#15 0x0000000000000110 in ?? ()
No symbol table info available.
#16 0x0000000000000000 in ?? ()
No symbol table info available.