pkg/52629: pkg_add: A different version of libarchive-3.3.2 is already installed: libarchive-3.1.2nb2

[andrew.pennebaker%gmail.com@localhost]

>Number:         52629
>Category:       pkg
>Synopsis:       pkg_add: A different version of libarchive-3.3.2 is already installed: libarchive-3.1.2nb2
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Oct 20 01:00:00 +0000 2017
>Originator:     Andrew Pennebaker
>Release:        7.0
>Organization:
>Environment:
NetBSD .domain.name 7.0 NetBSD 7.0 (GENERIC.201509250726Z) amd64
>Description:
When I try to run `make install` for lang/rust, it fails with "pkg_add: A different version of libarchive-3.3.2 is already installed: libarchive-3.1.2nb2".
>How-To-Repeat:
curl -o pkgsrc-2017Q3.tar.gz ftp://ftp.netbsd.org//pub/pkgsrc/pkgsrc-2017Q3/pkgsrc-2017Q3.tar.gz && \
    tar -C /usr -xzf pkgsrc-2017Q3.tar.gz && \
    sh -c 'cd /usr/pkgsrc/lang/rust && sudo make install'
>Fix: