#0  0x00007faa8fae1494 in g_str_hash () from /tmp/apport_sandbox_qtpjmzb3/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.1
#1  0x00007faa8fae05dc in g_hash_table_lookup () from /tmp/apport_sandbox_qtpjmzb3/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.1
#2  0x00007faa8fa77bf0 in update_user (user=0x7faa800062c0, manager=0x55d5121c92d0) at ../src/libaccountsservice/act-user-manager.c:1020
  [Error: act-user-manager.c was not found in source tree]
#3  on_user_changed (manager=0x55d5121c92d0, user=0x7faa800062c0) at ../src/libaccountsservice/act-user-manager.c:664
  [Error: act-user-manager.c was not found in source tree]
#4  on_user_changed (user=0x7faa800062c0, manager=0x55d5121c92d0) at ../src/libaccountsservice/act-user-manager.c:650
  [Error: act-user-manager.c was not found in source tree]
#5  0x00007faa8fbde802 in g_closure_invoke () from /tmp/apport_sandbox_qtpjmzb3/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.1
#6  0x00007faa8fbf2814 in signal_emit_unlocked_R () from /tmp/apport_sandbox_qtpjmzb3/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.1
#7  0x00007faa8fbfdb9e in g_signal_emit_valist () from /tmp/apport_sandbox_qtpjmzb3/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.1
#8  0x00007faa8fbfe0d3 in g_signal_emit () from /tmp/apport_sandbox_qtpjmzb3/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.1
#9  0x00007faa8f679ff5 in ffi_call_unix64 () at ../src/x86/unix64.S:101
  [Error: unix64.S was not found in source tree]
#10 0x00007faa8f67940a in ffi_call_int (cif=<optimized out>, fn=<optimized out>, rvalue=<optimized out>, avalue=<optimized out>, closure=<optimized out>) at ../src/x86/ffi64.c:669
  [Error: ffi64.c was not found in source tree]
#11 0x00007faa8fbdf30d in g_cclosure_marshal_generic () from /tmp/apport_sandbox_qtpjmzb3/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.1
#12 0x00007faa8fbde802 in g_closure_invoke () from /tmp/apport_sandbox_qtpjmzb3/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.1
#13 0x00007faa8fbf2814 in signal_emit_unlocked_R () from /tmp/apport_sandbox_qtpjmzb3/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.1
#14 0x00007faa8fbfca37 in g_signal_emitv () from /tmp/apport_sandbox_qtpjmzb3/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.1
#15 0x00007faa8fa81bf5 in accounts_user_proxy_g_signal (proxy=<optimized out>, sender_name=<optimized out>, signal_name=<optimized out>, parameters=<optimized out>) at src/accounts-user-generated.c:6784
  [Error: accounts-user-generated.c was not found in source tree]
#16 0x00007faa8fbde802 in g_closure_invoke () from /tmp/apport_sandbox_qtpjmzb3/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.1
#17 0x00007faa8fbf1f96 in signal_emit_unlocked_R () from /tmp/apport_sandbox_qtpjmzb3/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.1
#18 0x00007faa8fbfdb9e in g_signal_emit_valist () from /tmp/apport_sandbox_qtpjmzb3/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.1
#19 0x00007faa8fbfe0d3 in g_signal_emit () from /tmp/apport_sandbox_qtpjmzb3/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.1
#20 0x00007faa8fd45df0 in on_signal_received (connection=<optimized out>, sender_name=0x7faa80012a40 ":1.138", object_path=<optimized out>, interface_name=<optimized out>, signal_name=0x7faa80009fd0 "Changed", parameters=0x7faa80010d80, user_data=0x55d5121ecf60) at ../../../gio/gdbusproxy.c:884
  [Error: gdbusproxy.c was not found in source tree]
#21 0x00007faa8fd3381f in emit_signal_instance_in_idle_cb (data=0x7faa80015000) at ../../../gio/gdbusconnection.c:3777
  [Error: gdbusconnection.c was not found in source tree]
#22 0x00007faa8faf2e8e in g_main_context_dispatch () from /tmp/apport_sandbox_qtpjmzb3/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.1
#23 0x00007faa8faf3240 in g_main_context_iterate.isra () from /tmp/apport_sandbox_qtpjmzb3/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.1
#24 0x00007faa8faf3533 in g_main_loop_run () from /tmp/apport_sandbox_qtpjmzb3/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.1
#25 0x000055d5107d355a in main ()