Per the GLEP, upstream maintainer in metadata.xml must have a <name/> specified. Please add the missing name.
commit 9450a7f01734b053347531aa75a6d18306bd12f9 Author: Patrice Clement <monsieurp@gentoo.org> AuthorDate: Tue May 10 12:47:39 2016 Commit: Patrice Clement <monsieurp@gentoo.org> CommitDate: Tue May 10 12:52:47 2016 net-p2p/ncdc: Add maintainer name. Package-Manager: portage-2.2.26