This is an auto-filled bug because dev-vcs/rcs fails tests. The issue was originally discovered on arm64, but it may be reproducible on other arches as well. If you think that a different summary clarifies the issue better, feel free to change it. Attached build log and emerge --info.
Created attachment 635818 [details] build.log build log and emerge --info
(Other bug came first, same failure) *** This bug has been marked as a duplicate of bug 675430 ***