#0  __pthread_mutex_unlock_usercnt (mutex=0x7475700073754244, decr=decr@entry=1) at pthread_mutex_unlock.c:37
  [Error: pthread_mutex_unlock.c was not found in source tree]
#1  0x00007f25c04b70ea in __GI___pthread_mutex_unlock (mutex=<optimized out>) at pthread_mutex_unlock.c:297
  [Error: pthread_mutex_unlock.c was not found in source tree]
#2  0x00007f25c0751551 in g_mutex_unlock (mutex=<optimized out>) at /build/buildd/glib2.0-2.37.6/./glib/gthread-posix.c:232
  [Error: /build/buildd/glib2.0-2.37.6/./glib/gthread-posix.c was not found in source tree]
#3  0x00007f25c0711a3b in g_main_loop_run (loop=0x1529fb0) at /build/buildd/glib2.0-2.37.6/./glib/gmain.c:3908
  [Error: /build/buildd/glib2.0-2.37.6/./glib/gmain.c was not found in source tree]
#4  0x00000000004084dc in indicator_keyboard_service_up (self=<optimized out>) at main.c:373
  [Error: main.c was not found in source tree]
#5  0x0000000000408a37 in indicator_keyboard_service_main (args=0x7fffb7d71d08, args_length1=3) at main.c:2657
  [Error: main.c was not found in source tree]
#6  0x00007f25c0106de5 in __libc_start_main (main=0x405900 <main>, argc=3, ubp_av=0x7fffb7d71d08, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffb7d71cf8) at libc-start.c:260
  [Error: libc-start.c was not found in source tree]
#7  0x0000000000405949 in _start ()