sys-fs/quota (through 3.17) still depends on portmap, while the new nfs-utils (~1.2.0) wants rpcbind and specifically not portmap. The quota package needs to be updated to allow the new rpcbind. Reproducible: Always Steps to Reproduce:
fixed in cvs, thanks http://sources.gentoo.org/sys-fs/quota/quota-3.17.ebuild?r1=1.1&r2=1.2