This is an auto-filed bug because net-proxy/wwwoffle installs files with broken symlink. The issue was originally discovered on amd64, 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 641610 [details] build.log build log and emerge --info
tinderbox has reproduced this issue with version 2.9i-r2 - Updating summary.
ci has reproduced this issue with version 2.9j - Updating summary.