rust-kit gives unavailable repository error for layout.conf

When using equery I get the following message:

Unavailable repository 'gentoo' referenced by masters entry in '/var/git/meta-repo/kits/rust-kit/metadata/layout.conf'

Modifying the line 'masters = gentoo' to 'masters = core-kit' and adding the line 'repo-name = rust-kit' resolves the problem.

Got the same message when using skeleton-overlay for a local overlay. It seems that skeleton-overlay is not updated yet.