#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:49
  [Error: raise.c was not found in source tree]
#1  0x00007f5981fce864 in __GI_abort () at abort.c:79
  [Error: abort.c was not found in source tree]
#2  0x00007f5982031af6 in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7f5982159128 "%s\n") at ../sysdeps/posix/libc_fatal.c:155
  [Error: libc_fatal.c was not found in source tree]
#3  0x00007f598203a46c in malloc_printerr (str=str@entry=0x7f598215b5d8 "double free or corruption (fasttop)") at malloc.c:5389
  [Error: malloc.c was not found in source tree]
#4  0x00007f598203bfd3 in _int_free (av=0x7f598218bba0 <main_arena>, p=0x55964a2bf3e0, have_lock=0) at malloc.c:4298
  [Error: malloc.c was not found in source tree]
#5  0x00007f59822673a2 in g_hash_table_remove_all_nodes.part () from /srv/vms/apport-sandbox-dir/Ubuntu 20.10/amd64/report-sandbox/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6600.0
#6  0x00007f5982268f73 in g_hash_table_remove_all () from /srv/vms/apport-sandbox-dir/Ubuntu 20.10/amd64/report-sandbox/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6600.0
#7  0x00007f5982268fc2 in g_hash_table_destroy () from /srv/vms/apport-sandbox-dir/Ubuntu 20.10/amd64/report-sandbox/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6600.0
#8  0x000055964845d83e in parse_and_upload_report (crash_file=<optimized out>) at src/whoopsie.c:776
  771:             handle_response (report, s->str);
  772: 
  773:         g_string_free (s, TRUE);
  774:     }
  775: 
  776:     g_hash_table_destroy (report);
  777: 
  778:     return success;
  779: }
  780: 
  781: gboolean
#9  0x000055964845da98 in process_existing_files (report_dir=0x55964846266f "/var/crash") at src/whoopsie.c:806
  801:         }
  802: 
  803:         crash_file = change_file_extension (upload_file, ".crash");
  804:         if (!crash_file) {
  805:             g_free (upload_file);
  806:             continue;
  807:         }
  808: 
  809:         if (already_handled_report (crash_file)) {
  810:             g_free (upload_file);
  811:             g_free (crash_file);
#10 0x000055964845c1d6 in main (argc=<optimized out>, argv=<optimized out>) at src/whoopsie.c:1135
  1130:         exit (EXIT_FAILURE);
  1131: 
  1132:     if (!assume_online)
  1133:         monitor_connectivity (crash_db_url, network_changed);
  1134: 
  1135:     process_existing_files (report_dir);
  1136:     g_timeout_add_seconds (PROCESS_OUTSTANDING_TIMEOUT,
  1137:                            (GSourceFunc) process_existing_files, (gpointer) report_dir);
  1138: 
  1139:     loop = g_main_loop_new (NULL, FALSE);
  1140:     g_main_loop_run (loop);