I was having trouble updating my system with the latest source updates so I decided to go back to scratch, delete /usr/src and /usr/xsrc, download the snapshot from 20200117 and try again.
Unfortunately, I get a new error when the system is trying to build "tests." It throws and error at the "Create libarchive/test_main.d" section. It says it cannot find the "list.h" file included in test_main.c.
Not sure where to go from here. Any suggestions?