#0  magazine_chain_pop_head (magazine_chunks=0x7f68e80009d0) at /build/buildd/glib2.0-2.39.91/./glib/gslice.c:539
  [Error: /build/buildd/glib2.0-2.39.91/./glib/gslice.c was not found in source tree]
#1  thread_memory_magazine1_alloc (tmem=<optimized out>, ix=16) at /build/buildd/glib2.0-2.39.91/./glib/gslice.c:842
  [Error: /build/buildd/glib2.0-2.39.91/./glib/gslice.c was not found in source tree]
#2  g_slice_alloc (mem_size=mem_size@entry=264) at /build/buildd/glib2.0-2.39.91/./glib/gslice.c:998
  [Error: /build/buildd/glib2.0-2.39.91/./glib/gslice.c was not found in source tree]
#3  0x00007f690995876e in g_slice_alloc0 (mem_size=mem_size@entry=264) at /build/buildd/glib2.0-2.39.91/./glib/gslice.c:1032
  [Error: /build/buildd/glib2.0-2.39.91/./glib/gslice.c was not found in source tree]
#4  0x00007f68f3dd7706 in gst_video_decoder_new_frame (decoder=decoder@entry=0x7f68e8041f60) at gstvideodecoder.c:2156
  [Error: gstvideodecoder.c was not found in source tree]
#5  0x00007f68f3dd7f98 in gst_video_decoder_chain_forward (decoder=decoder@entry=0x7f68e8041f60, buf=buf@entry=0x7f68e40301e0, at_eos=at_eos@entry=0) at gstvideodecoder.c:1739
  [Error: gstvideodecoder.c was not found in source tree]
#6  0x00007f68f3dd9f6d in gst_video_decoder_chain (pad=<optimized out>, parent=0x7f68e8041f60, buf=0x7f68e40301e0) at gstvideodecoder.c:2037
  [Error: gstvideodecoder.c was not found in source tree]
#7  0x00007f69036cfce8 in gst_pad_chain_data_unchecked (data=0x7f68e40301e0, type=<optimized out>, pad=0x7f68e80440f0) at gstpad.c:3760
  [Error: gstpad.c was not found in source tree]
#8  gst_pad_push_data (pad=0x7f68e4014960, type=type@entry=4112, data=<optimized out>) at gstpad.c:3990
  [Error: gstpad.c was not found in source tree]
#9  0x00007f69036d6996 in gst_pad_push (pad=<optimized out>, buffer=<optimized out>) at gstpad.c:4093
  [Error: gstpad.c was not found in source tree]
#10 0x00007f690344b299 in gst_base_transform_chain (pad=<optimized out>, parent=0x7f68e4024120, buffer=<optimized out>) at gstbasetransform.c:2237
  [Error: gstbasetransform.c was not found in source tree]
#11 0x00007f69036cfce8 in gst_pad_chain_data_unchecked (data=0x7f68e40301e0, type=<optimized out>, pad=0x7f68e4014730) at gstpad.c:3760
  [Error: gstpad.c was not found in source tree]
#12 gst_pad_push_data (pad=0x7f68e4014500, type=type@entry=4112, data=<optimized out>, data@entry=0x7f68e40301e0) at gstpad.c:3990
  [Error: gstpad.c was not found in source tree]
#13 0x00007f69036d6996 in gst_pad_push (pad=<optimized out>, buffer=buffer@entry=0x7f68e40301e0) at gstpad.c:4093
  [Error: gstpad.c was not found in source tree]
#14 0x00007f690342db09 in gst_base_parse_push_frame (parse=parse@entry=0x7f68e401e950, frame=frame@entry=0x7f68f207aaf0) at gstbaseparse.c:2299
  [Error: gstbaseparse.c was not found in source tree]
#15 0x00007f690342e510 in gst_base_parse_chain (pad=<optimized out>, parent=0x7f68e401e950, buffer=0x7f68e40301e0) at gstbaseparse.c:2805
  [Error: gstbaseparse.c was not found in source tree]
#16 0x00007f69036cfce8 in gst_pad_chain_data_unchecked (data=0x7f68e40301e0, type=<optimized out>, pad=0x7f68e40142d0) at gstpad.c:3760
  [Error: gstpad.c was not found in source tree]
#17 gst_pad_push_data (pad=0x7f68e40140a0, type=type@entry=4112, data=<optimized out>, data@entry=0x7f68e40301e0) at gstpad.c:3990
  [Error: gstpad.c was not found in source tree]
#18 0x00007f69036d6996 in gst_pad_push (pad=<optimized out>, buffer=buffer@entry=0x7f68e40301e0) at gstpad.c:4093
  [Error: gstpad.c was not found in source tree]
#19 0x00007f68f3912a23 in gst_single_queue_push_one (object=0x7f68e40301e0, sq=0x7f68e4019440, mq=0x7f68fc030680) at gstmultiqueue.c:1089
  [Error: gstmultiqueue.c was not found in source tree]
#20 gst_multi_queue_loop (pad=<optimized out>) at gstmultiqueue.c:1338
  [Error: gstmultiqueue.c was not found in source tree]
#21 0x00007f69036fd4e9 in gst_task_func (task=0x7f68f802bb90) at gsttask.c:316
  [Error: gsttask.c was not found in source tree]
#22 0x00007f690996289c in g_thread_pool_thread_proxy (data=<optimized out>) at /build/buildd/glib2.0-2.39.91/./glib/gthreadpool.c:307
  [Error: /build/buildd/glib2.0-2.39.91/./glib/gthreadpool.c was not found in source tree]
#23 0x00007f6909961f15 in g_thread_proxy (data=0x7f68e4013190) at /build/buildd/glib2.0-2.39.91/./glib/gthread.c:764
  [Error: /build/buildd/glib2.0-2.39.91/./glib/gthread.c was not found in source tree]
#24 0x00007f69094d1182 in start_thread (arg=0x7f68f207b700) at pthread_create.c:312
  [Error: pthread_create.c was not found in source tree]
#25 0x00007f69091fe12d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
  [Error: ../sysdeps/unix/sysv/linux/x86_64/clone.S was not found in source tree]