=> Bootstrap dependency digest>=20010302: found digest-20180917
=> Checksum SHA1 OK for nghttp2-1.35.1.tar.xz
=> Checksum RMD160 OK for nghttp2-1.35.1.tar.xz
=> Checksum SHA512 OK for nghttp2-1.35.1.tar.xz
mkdir: /tmp/pkgbuild/www/nghttp2: Permission denied
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/www/nghttp2