Fix #3326 by making sure only one zipper is selected.
Fix #3326 by making sure only one zipper is selected.

Change-Id: Ib061c85900e577f3548d47e8fa86086dfec9654a
PiperOrigin-RevId: 161360338

bazelbuild/bazel,snnn/bazel,spxtr/bazel,variac/bazel,twitter-forks/bazel,akira-baruah/bazel,damienmg/bazel,perezd/bazel,dslomov/bazel-windows,akira-baruah/bazel,dropbox/bazel,safarmer/bazel,katre/bazel,dslomov/bazel-windows,dslomov/bazel,werkt/bazel,damienmg/bazel,bazelbuild/bazel,ButterflyNetwork/bazel,damienmg/bazel,bazelbuild/bazel,twitter-forks/bazel,davidzchen/bazel,ulfjack/bazel,werkt/bazel,bazelbuild/bazel,perezd/bazel,ulfjack/bazel,twitter-forks/bazel,cushon/bazel,akira-baruah/bazel,safarmer/bazel,twitter-forks/bazel,safarmer/bazel,werkt/bazel,ButterflyNetwork/bazel,davidzchen/bazel,variac/bazel,ulfjack/bazel,katre/bazel,ButterflyNetwork/bazel,meteorcloudy/bazel,dslomov/bazel-windows,dropbox/bazel,perezd/bazel,aehlig/bazel,ulfjack/bazel,perezd/bazel,dslomov/bazel,spxtr/bazel,meteorcloudy/bazel,davidzchen/bazel,spxtr/bazel,ulfjack/bazel,werkt/bazel,variac/bazel,perezd/bazel,dslomov/bazel-windows,katre/bazel,variac/bazel,damienmg/bazel,bazelbuild/bazel,safarmer/bazel,variac/bazel,snnn/bazel,safarmer/bazel,dslomov/bazel,snnn/bazel,katre/bazel,dslomov/bazel,davidzchen/bazel,aehlig/bazel,damienmg/bazel,meteorcloudy/bazel,ButterflyNetwork/bazel,cushon/bazel,aehlig/bazel,katre/bazel,snnn/bazel,meteorcloudy/bazel,dropbox/bazel,katre/bazel,dslomov/bazel,twitter-forks/bazel,davidzchen/bazel,aehlig/bazel,ulfjack/bazel,snnn/bazel,werkt/bazel,meteorcloudy/bazel,perezd/bazel,aehlig/bazel,meteorcloudy/bazel,ButterflyNetwork/bazel,dropbox/bazel,cushon/bazel,dslomov/bazel,akira-baruah/bazel,davidzchen/bazel,variac/bazel,spxtr/bazel,davidzchen/bazel,twitter-forks/bazel,dslomov/bazel-windows,safarmer/bazel,dropbox/bazel,aehlig/bazel,dropbox/bazel,damienmg/bazel,ulfjack/bazel,spxtr/bazel,akira-baruah/bazel,cushon/bazel,cushon/bazel,aehlig/bazel,bazelbuild/bazel,werkt/bazel,perezd/bazel,snnn/bazel,cushon/bazel,dslomov/bazel,spxtr/bazel,ButterflyNetwork/bazel,snnn/bazel,meteorcloudy/bazel,twitter-forks/bazel,damienmg/bazel,variac/bazel,spxtr/bazel,dslomov/bazel-windows,akira-baruah/bazel