=> Bootstrap dependency digest>=20010302: found digest-20190127
===> Skipping vulnerability checks.
WARNING: No /opt/pkg/pkgdb/pkg-vulnerabilities file found.
WARNING: To fix run: `/opt/pkg/sbin/pkg_admin -K /opt/pkg/pkgdb fetch-pkg-vulnerabilities'.
===> Installing for zircon-1.18.256nb1
=> Generating pre-install file lists
can't find package unixfile exactly 1.18.8.5
    while executing
"package require -exact unixfile 1.18.[info tclversion]"
    (procedure "install" line 4)
    invoked from within
"install $argv"
    (file "installer/install.tcl" line 68)
*** Error code 1

Stop.
bmake[1]: stopped in /opt/pkgsrc/chat/zircon
*** Error code 1

Stop.
bmake: stopped in /opt/pkgsrc/chat/zircon