Created attachment 633826 [details] emerge --info app-admin/terraform-0.12.17 fails to build looks similar to what was reported about 0.12.3 in https://bugs.gentoo.org/show_bug.cgi?id=693766
Created attachment 633828 [details] build.log
The problem is solved by setting GOFLAGS=-mod=vendor env var for Go >=1.11
just marked newer version stable and drtopped old.