Comment 2 for bug 1228626

StacktraceTop:
 sem_post@@GLIBC_2.1 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/sem_post.S:41
 PyThread_release_lock (lock=0x0) at ../Python/thread_pthread.h:350
 PyEval_ReleaseLock () at ../Python/ceval.c:265
 pyg_toggle_notify (data=data@entry=0x9167c5c, object=object@entry=0x94aefd0, is_last_ref=is_last_ref@entry=0) at ../../../gi/_gobject/pygobject.c:605
 toggle_refs_notify (object=<optimized out>, is_last_ref=0) at /build/buildd/glib2.0-2.37.93/./gobject/gobject.c:2906