=> Bootstrap dependency digest>=20010302: found digest-20190127
===> Skipping vulnerability checks.
WARNING: No /var/db/pkg/pkg-vulnerabilities file found.
WARNING: To fix run: `/usr/sbin/pkg_admin -K /var/db/pkg fetch-pkg-vulnerabilities'.
=> Checksum SHA1 OK for pkg-1.9.99.4.tar.xz
=> Checksum RMD160 OK for pkg-1.9.99.4.tar.xz
=> Checksum SHA512 OK for pkg-1.9.99.4.tar.xz
===> Installing dependencies for pkg-1.9.99.4nb1
=> Tool dependency checkperms>=1.1: found checkperms-1.12
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
===> Overriding tools for pkg-1.9.99.4nb1
===> Extracting for pkg-1.9.99.4nb1
===> Patching for pkg-1.9.99.4nb1
===> Creating toolchain wrappers for pkg-1.9.99.4nb1
===> Configuring for pkg-1.9.99.4nb1
=> Update pkg(8) defaults.
=> Direct audit reports to Pkgsrc vuxml
=> Modifying GNU configure scripts to avoid --recheck
=> Replacing config-guess with pkgsrc versions
=> Replacing config-sub with pkgsrc versions
=> Replacing install-sh with pkgsrc version
=> Checking for portability problems in extracted files
ERROR: [check-portability.awk] => Found test ... == ...:
ERROR: [check-portability.awk] scripts/periodic/411.pkg-backup.in:28: 		if [ ${i} == 0 ]; then

Explanation:
===========================================================================
The "test" command, as well as the "[" command, are not required to know
the "==" operator. Only a few implementations like bash and some
versions of ksh support it.

When you run "test foo == foo" on a platform that does not support the
"==" operator, the result will be "false" instead of "true". This can
lead to unexpected behavior.

There are two ways to fix this error message. If the file that contains
the "test ==" is needed for building the package, you should create a
patch for it, replacing the "==" operator with "=". If the file is not
needed, add its name to the CHECK_PORTABILITY_SKIP variable in the
package Makefile.
===========================================================================

*** Error code 1

Stop.
make[1]: stopped in /data/pkgsrc/pkgtools/pkg
*** Error code 1

Stop.
make: stopped in /data/pkgsrc/pkgtools/pkg