.
Thread 2 (Thread 0x7fee181b8700 (LWP 25385)):
#0  0x00007fee1e9aad93 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = 0
        result = <optimized out>
#1  0x00007fee1f1a30e6 in g_main_context_poll (n_fds=1, fds=0x7fee100010e0, timeout=-1, context=0xf2f2f0, priority=<optimized out>) at /build/buildd/glib2.0-2.31.22/./glib/gmain.c:3417
        poll_func = 0x7fee1f1b0060 <g_poll>
#2  g_main_context_iterate (dispatch=1, block=<optimized out>, context=0xf2f2f0, self=<optimized out>) at /build/buildd/glib2.0-2.31.22/./glib/gmain.c:3118
        timeout = -1
        some_ready = <optimized out>
        fds = 0x7fee100010e0
        max_priority = 2147483647
        nfds = 1
        allocated_nfds = <optimized out>
#3  g_main_context_iterate (context=0xf2f2f0, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.31.22/./glib/gmain.c:3060
        some_ready = 268439776
#4  0x00007fee1f1a354a in g_main_loop_run (loop=0x7fee100010c0) at /build/buildd/glib2.0-2.31.22/./glib/gmain.c:3317
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#5  0x00007fee189e698b in ?? ()
No symbol table info available.
#6  0x0000000000f285e0 in ?? ()
No symbol table info available.
#7  0x00007fee1f1c4cd5 in g_thread_proxy (data=0xf2f2f0) at /build/buildd/glib2.0-2.31.22/./glib/gthread.c:801
        thread = 0xf2f2f0
#8  0x00007fee1da15e9a in start_thread (arg=0x7fee181b8700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7fee181b8700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -3072458775005609202, 140734486537440, 140660583401920, 0, 3, 3062552420008739598, 3062540412343436046}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#9  0x00007fee1e9b674d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#10 0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 0x7fee1fbf27c0 (LWP 25384)):
#0  0x0000000000405122 in bson_append_string (b=0x7fff4d13eba0, name=0xf403d0 "UserGroups", value=0x0) at lib/bson/bson.c:744
No locals.
#1  0x00007fee1f1935d0 in g_hash_table_foreach (hash_table=0x7fee10002d20, func=0x402ef1 <append_key_value>, user_data=0x7fff4d13eba0) at /build/buildd/glib2.0-2.31.22/./glib/ghash.c:1524
        node_hash = <optimized out>
        node_key = <optimized out>
        node_value = <optimized out>
        i = <optimized out>
        version = 29
        __PRETTY_FUNCTION__ = "g_hash_table_foreach"
#2  0x0000000000402f8e in bsonify (report=0x7fee10002d20, b=0x7fff4d13eba0, bson_message=0x7fff4d13ec48, bson_message_len=0x7fff4d13ec6c) at src/whoopsie.c:215
        __PRETTY_FUNCTION__ = "bsonify"
#3  0x00000000004037a6 in parse_and_upload_report (crash_file=<optimized out>) at src/whoopsie.c:521
        report = 0x7fee10002d20
        success = 0
        message_len = 0
        message_data = 0x0
        response_data = 0x0
        command = 0x0
        core = 0x0
        arch = 0x0
        error = 0x0
        b = {{data = 0xf425e0 "", cur = 0xf49bfc "", dataSize = 33813, finished = 0, stack = {1332289538, 0, 539514818, 0, 0, 0, 0, 0, 0, 0, 2050, 0, 1443991, 0, 1, 0, 33184, 0, 124, 0, 0, 0, 883242, 0, 4096, 0, 1728, 0, 1332289539, 0, 451514788, 0}, stackPos = 0, err = 0, errstr = 0x0}}
#4  0x0000000000403bde in process_existing_files () at src/whoopsie.c:700
        dir = 0xf2f650
        file = <optimized out>
        ext = <optimized out>
        upload_file = 0xf31f10 "/var/crash/_usr_sbin_cupsd.0.upload"
        crash_file = 0xf2f5e0 "/var/crash/_usr_sbin_cupsd.0.crash"
#5  0x0000000000402cc9 in main (argc=1, argv=0x7fff4d13edc8) at src/whoopsie.c:1010
        path = <optimized out>
        monitor = 0xf23030
        err = 0x0
        handler = 1