The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2017.05.01.23.07.14 pgoyette src/share/man/man9/Makefile,v 1.412 2017.05.01.23.08.11 pgoyette src/distrib/sets/lists/comp/mi,v 1.2129 2017.05.01.23.33.07 pgoyette src/distrib/sets/lists/comp/mi,v 1.2130 Log files can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2017.05.html#2017.05.01.23.33.07