The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2017.05.06.19.54.41 christos src/distrib/sets/lists/base/shl.mi,v 1.812
2017.05.06.19.56.41 christos src/doc/3RDPARTY,v 1.1441
2017.05.06.19.56.41 christos src/doc/CHANGES,v 1.2280
Log files can be found at:
http://releng.NetBSD.org/b5reports/i386/commits-2017.05.html#2017.05.06.19.56.41
