netbsd-current build error

[Hisashi T Fujinaka <htodd%twofifty.com@localhost>]

I wonder if this is just me:
makesetfiles ===> /usr/src/distrib/sets
--- /usr/src/obj.amd64/destdir.amd64/METALOG.sanitised ---
sort /usr/src/obj.amd64/destdir.amd64/METALOG | 
/usr/src/obj.amd64/tooldir.NetBSD-6.99.12-amd64/bin/nbmtree -CSM -k all -N 
/usr/src/etc  >/usr/src/obj.amd64/destdir.amd64/METALOG.new
nbmtree: strunvis failed on `./rescue/\['
nbmtree: failed at line 237 of the specification
*** [/usr/src/obj.amd64/destdir.amd64/METALOG.sanitised] Error code 1
nbmake: stopped in /usr/src/distrib/sets


--
Hisashi T Fujinaka - htodd%twofifty.com@localhost
BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte