I just tried to build -current (cvs update'd immediately before I
started), and I bombed with the following:

/mnt/NetBSD-current/destdir/lib/libdes.so. -> libcrypto.so.1.1
/mnt/NetBSD-current/destdirstopped -> nbmake:
/mnt/NetBSD-current/destdir/mnt/NetBSD-current/src/lib/libdes. -> in
nbinstall: /mnt/NetBSD-current/destdir/mnt/NetBSD-current/src/lib: mktemp: No su
ch file or directory
*** Error code 1

Stop.
nbmake: stopped in /mnt/NetBSD-current/src/lib/libcrypto
*** Error code 1

I was in /mnt/NetBSD-current/src and the command I used to build it was

./build.sh -D /mnt/NetBSD-current/destdir -R /mnt/NetBSD-current/releasedir rele
ase