https://bugzilla.redhat.com/show_bug.cgi?id=1087720
--- Comment #11 from Matthew Heon mheon@redhat.com --- Appears to be an issue with Golang proper (https://code.google.com/p/go/issues/detail?id=4391&q=signal&colspec=...)
Unknown when a fix will be released - there hasn't been any movement on the bug since February.