#0  __libc_do_syscall () at ../ports/sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:44
  [Error: ../ports/sysdeps/unix/sysv/linux/arm/libc-do-syscall.S was not found in source tree]
#1  0x404ea5fe in __GI_raise (sig=sig@entry=5) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
  [Error: ../nptl/sysdeps/unix/sysv/linux/raise.c was not found in source tree]
#2  0x403c79ba in g_logv (log_domain=0x0, log_level=log_level@entry=G_LOG_LEVEL_ERROR, format=format@entry=0xa094 "Unable to find keyfile for application '%s'", args=..., args@entry=...) at /build/buildd/glib2.0-2.38.0/./glib/gmessages.c:989
  [Error: /build/buildd/glib2.0-2.38.0/./glib/gmessages.c was not found in source tree]
#3  0x403c7a74 in g_log (log_domain=<optimized out>, log_level=log_level@entry=G_LOG_LEVEL_ERROR, format=0xa094 "Unable to find keyfile for application '%s'") at /build/buildd/glib2.0-2.38.0/./glib/gmessages.c:1025
  [Error: /build/buildd/glib2.0-2.38.0/./glib/gmessages.c was not found in source tree]
#4  0x0000931e in main (argc=1, argv=<optimized out>) at /build/buildd/upstart-app-launch-0.1+13.10.20131008.1/desktop-exec.c:47
  [Error: /build/buildd/upstart-app-launch-0.1+13.10.20131008.1/desktop-exec.c was not found in source tree]