#0  g_slist_length (list=0xa00000000, list@entry=0x26fb920) at /build/buildd/glib2.0-2.36.0/./glib/gslist.c:874
  [Error: /build/buildd/glib2.0-2.36.0/./glib/gslist.c was not found in source tree]
#1  0x00007f903ec6bc65 in _py_args_combine_and_check_length (py_kwargs=0x7f902c0effc8, py_args=0x7f9034051b90, arg_name_hash=0x0, arg_name_list=0x26fb920, function_name=0x1 <Address 0x1 out of bounds>) at ../../gi/pygi-invoke.c:169
  [Error: ../../gi/pygi-invoke.c was not found in source tree]
#2  _invoke_state_init_from_callable_cache (kwargs=0x7f902c0effc8, py_args=<optimized out>, cache=0x26fb640, state=0x7f90254a56a0) at ../../gi/pygi-invoke.c:301
  [Error: ../../gi/pygi-invoke.c was not found in source tree]
#3  pygi_callable_info_invoke (info=0x212d000, py_args=<optimized out>, kwargs=0x7f902c0effc8, cache=0x26fb640, function_ptr=0x0, user_data=0x0) at ../../gi/pygi-invoke.c:653
  [Error: ../../gi/pygi-invoke.c was not found in source tree]
#4  0x00000000004dbba8 in ext_do_call (nk=0, na=0, flags=<optimized out>, pp_stack=0x7f90254a58b0, func=0x7f902c04d050) at ../Python/ceval.c:4374
  [Error: ../Python/ceval.c was not found in source tree]
#5  PyEval_EvalFrameEx (f=f@entry=0x7f903f5073f0, throwflag=throwflag@entry=0) at ../Python/ceval.c:2720
  [Error: ../Python/ceval.c was not found in source tree]
#6  0x00000000004cdca6 in PyEval_EvalCodeEx (_co=0x7f903d05dd20, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=<optimized out>, kws=0x7f902c0dd568, kwcount=0, defs=0x0, defcount=0, kwdefs=0x0, closure=0x7f903d07f050) at ../Python/ceval.c:3433
  [Error: ../Python/ceval.c was not found in source tree]
#7  0x00000000004d91d3 in fast_function (nk=<optimized out>, na=<optimized out>, n=<optimized out>, pp_stack=0x7f90254a5b50, func=0x7f903d00df80) at ../Python/ceval.c:4160
  [Error: ../Python/ceval.c was not found in source tree]
#8  call_function (oparg=<optimized out>, pp_stack=0x7f90254a5b50) at ../Python/ceval.c:4083
  [Error: ../Python/ceval.c was not found in source tree]
#9  PyEval_EvalFrameEx (f=<optimized out>, throwflag=throwflag@entry=0) at ../Python/ceval.c:2679
  [Error: ../Python/ceval.c was not found in source tree]
#10 0x00000000004d8e9f in fast_function (nk=<optimized out>, na=<optimized out>, n=<optimized out>, pp_stack=0x7f90254a5d40, func=0x7f9034a5a680) at ../Python/ceval.c:4150
  [Error: ../Python/ceval.c was not found in source tree]
#11 call_function (oparg=<optimized out>, pp_stack=0x7f90254a5d40) at ../Python/ceval.c:4083
  [Error: ../Python/ceval.c was not found in source tree]
#12 PyEval_EvalFrameEx (f=f@entry=0x7f902c0e1050, throwflag=throwflag@entry=0) at ../Python/ceval.c:2679
  [Error: ../Python/ceval.c was not found in source tree]
#13 0x00000000004cd873 in PyEval_EvalCodeEx (_co=0x7f903eedced0, globals=<optimized out>, locals=<optimized out>, args=<optimized out>, argcount=<optimized out>, kws=kws@entry=0x0, kwcount=kwcount@entry=0, defs=defs@entry=0x0, defcount=defcount@entry=0, kwdefs=kwdefs@entry=0x0, closure=0x0) at ../Python/ceval.c:3433
  [Error: ../Python/ceval.c was not found in source tree]
#14 0x00000000004ce3ae in function_call.70462 (func=func@entry=0x7f9036e06200, arg=<optimized out>, kw=kw@entry=0x0) at ../Objects/funcobject.c:633
  [Error: ../Objects/funcobject.c was not found in source tree]
#15 0x00000000004e50ca in PyObject_Call (func=func@entry=0x7f9036e06200, arg=<optimized out>, kw=kw@entry=0x0) at ../Objects/abstract.c:2082
  [Error: ../Objects/abstract.c was not found in source tree]
#16 0x00000000004d5eed in ext_do_call (nk=0, na=0, flags=<optimized out>, pp_stack=0x7f90254a60a0, func=0x7f9036e06200) at ../Python/ceval.c:4377
  [Error: ../Python/ceval.c was not found in source tree]
#17 PyEval_EvalFrameEx (f=f@entry=0x7f902c0f2050, throwflag=throwflag@entry=0) at ../Python/ceval.c:2720
  [Error: ../Python/ceval.c was not found in source tree]
#18 0x00000000004cdca6 in PyEval_EvalCodeEx (_co=0x7f903f38ac90, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=<optimized out>, kws=0x7f9020003c30, kwcount=0, defs=0x0, defcount=0, kwdefs=0x0, closure=0x7f9036e08910) at ../Python/ceval.c:3433
  [Error: ../Python/ceval.c was not found in source tree]
#19 0x00000000004d91d3 in fast_function (nk=<optimized out>, na=<optimized out>, n=<optimized out>, pp_stack=0x7f90254a6340, func=0x7f9036e06290) at ../Python/ceval.c:4160
  [Error: ../Python/ceval.c was not found in source tree]
#20 call_function (oparg=<optimized out>, pp_stack=0x7f90254a6340) at ../Python/ceval.c:4083
  [Error: ../Python/ceval.c was not found in source tree]
#21 PyEval_EvalFrameEx (f=f@entry=0x7f9020003a70, throwflag=throwflag@entry=0) at ../Python/ceval.c:2679
  [Error: ../Python/ceval.c was not found in source tree]
#22 0x00000000004cd873 in PyEval_EvalCodeEx (_co=0x7f903f3dbc90, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=<optimized out>, kws=0x7f90200010f0, kwcount=0, defs=0x7f903453ade8, defcount=1, kwdefs=0x0, closure=0x0) at ../Python/ceval.c:3433
  [Error: ../Python/ceval.c was not found in source tree]
#23 0x00000000004d91d3 in fast_function (nk=<optimized out>, na=<optimized out>, n=<optimized out>, pp_stack=0x7f90254a65f0, func=0x7f903454c7a0) at ../Python/ceval.c:4160
  [Error: ../Python/ceval.c was not found in source tree]
#24 call_function (oparg=<optimized out>, pp_stack=0x7f90254a65f0) at ../Python/ceval.c:4083
  [Error: ../Python/ceval.c was not found in source tree]
#25 PyEval_EvalFrameEx (f=<optimized out>, throwflag=throwflag@entry=0) at ../Python/ceval.c:2679
  [Error: ../Python/ceval.c was not found in source tree]
#26 0x00000000004d8e9f in fast_function (nk=<optimized out>, na=<optimized out>, n=<optimized out>, pp_stack=0x7f90254a67e0, func=0x7f903454ccb0) at ../Python/ceval.c:4150
  [Error: ../Python/ceval.c was not found in source tree]
#27 call_function (oparg=<optimized out>, pp_stack=0x7f90254a67e0) at ../Python/ceval.c:4083
  [Error: ../Python/ceval.c was not found in source tree]
#28 PyEval_EvalFrameEx (f=<optimized out>, throwflag=throwflag@entry=0) at ../Python/ceval.c:2679
  [Error: ../Python/ceval.c was not found in source tree]
#29 0x00000000004d8e9f in fast_function (nk=<optimized out>, na=<optimized out>, n=<optimized out>, pp_stack=0x7f90254a69d0, func=0x7f903454c4d0) at ../Python/ceval.c:4150
  [Error: ../Python/ceval.c was not found in source tree]
#30 call_function (oparg=<optimized out>, pp_stack=0x7f90254a69d0) at ../Python/ceval.c:4083
  [Error: ../Python/ceval.c was not found in source tree]
#31 PyEval_EvalFrameEx (f=<optimized out>, throwflag=throwflag@entry=0) at ../Python/ceval.c:2679
  [Error: ../Python/ceval.c was not found in source tree]
#32 0x00000000004d8e9f in fast_function (nk=<optimized out>, na=<optimized out>, n=<optimized out>, pp_stack=0x7f90254a6bc0, func=0x7f903f37e4d0) at ../Python/ceval.c:4150
  [Error: ../Python/ceval.c was not found in source tree]
#33 call_function (oparg=<optimized out>, pp_stack=0x7f90254a6bc0) at ../Python/ceval.c:4083
  [Error: ../Python/ceval.c was not found in source tree]
#34 PyEval_EvalFrameEx (f=f@entry=0x7f902c0f0050, throwflag=throwflag@entry=0) at ../Python/ceval.c:2679
  [Error: ../Python/ceval.c was not found in source tree]
#35 0x00000000004cd873 in PyEval_EvalCodeEx (_co=0x7f903f376030, globals=<optimized out>, locals=<optimized out>, args=args@entry=0x7f9040f8a428, argcount=<optimized out>, kws=kws@entry=0x0, kwcount=kwcount@entry=0, defs=defs@entry=0x0, defcount=defcount@entry=0, kwdefs=kwdefs@entry=0x0, closure=0x0) at ../Python/ceval.c:3433
  [Error: ../Python/ceval.c was not found in source tree]
#36 0x00000000004ce3ae in function_call.70462 (func=func@entry=0x7f903f37e3b0, arg=arg@entry=0x7f9040f8a410, kw=kw@entry=0x0) at ../Objects/funcobject.c:633
  [Error: ../Objects/funcobject.c was not found in source tree]
#37 0x00000000004e50ca in PyObject_Call (func=func@entry=0x7f903f37e3b0, arg=arg@entry=0x7f9040f8a410, kw=kw@entry=0x0) at ../Objects/abstract.c:2082
  [Error: ../Objects/abstract.c was not found in source tree]
#38 0x00000000004e5537 in method_call.64992 (func=0x7f903f37e3b0, func@entry=0x7f9034055dd0, arg=0x7f9040f8a410, arg@entry=0x7f90410eb050, kw=0x0) at ../Objects/classobject.c:323
  [Error: ../Objects/classobject.c was not found in source tree]
#39 0x00000000004e50ca in PyObject_Call (func=func@entry=0x7f9034055dd0, arg=arg@entry=0x7f90410eb050, kw=<optimized out>) at ../Objects/abstract.c:2082
  [Error: ../Objects/abstract.c was not found in source tree]
#40 0x0000000000500c16 in PyEval_CallObjectWithKeywords (func=0x7f9034055dd0, arg=0x7f90410eb050, kw=<optimized out>) at ../Python/ceval.c:3942
  [Error: ../Python/ceval.c was not found in source tree]
#41 0x00000000005660c2 in t_bootstrap.29297 (boot_raw=0x233f4c0) at ../Modules/_threadmodule.c:993
  [Error: ../Modules/_threadmodule.c was not found in source tree]
#42 0x00007f9040d0ff8e in start_thread (arg=0x7f90254a7700) at pthread_create.c:311
  [Error: pthread_create.c was not found in source tree]
#43 0x00007f903fce5e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  [Error: ../sysdeps/unix/sysv/linux/x86_64/clone.S was not found in source tree]