https://blogs.gentoo.org/ago/2020/07/04/gentoo-tinderbox/ Issue: app-shells/mksh-59c calls commands that do not exist. Discovered on: amd64 (internal ref: ci)
Created attachment 678436 [details] build.log build log and emerge --info
I can't see if the SIZE environment variable is properly defined in your build.log, is it the case? In anyway this bug isn't a very significant one here, AFAIK size is just called to display information.