freebsd-update not updating kernel?

[Matthew Pounsett]

It looks to me from what I'm pasting below as if there is a kernel out
there somewhere for 9.3-RELEASE-p45, but freebsd-update is unable/unwilling
to fetch it.  I've also got Virtualbox segfaulting, which frequently
happens to me mid-upgrade when there's a kernel/package mismatch.

Does anyone have an explanation for what's happening here?

% uname -a
FreeBSD localhost 9.3-RELEASE-p43 FreeBSD 9.3-RELEASE-p43 #0: Sat May 28
00:19:32 UTC 2016
root at amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC
 amd64

% sudo freebsd-update -F fetch install
Looking up update.FreeBSD.org mirrors... 4 mirrors found.
Fetching metadata signature for 9.3-RELEASE from update6.freebsd.org...
done.
Fetching metadata index... done.
Inspecting system... done.
Preparing to download files... done.

No updates needed to update system to 9.3-RELEASE-p45.
No updates are available to install.
Run '/usr/sbin/freebsd-update fetch' first.

% sudo pkg install -f lsof
Updating FreeBSD repository catalogue...
FreeBSD repository is up-to-date.
All repositories are up-to-date.
The following 1 package(s) will be affected (of 0 checked):

Installed packages to be REINSTALLED:
lsof-4.90.e,8

Number of packages to be reinstalled: 1

111 KiB to be downloaded.

Proceed with this action? [y/N]: y
Fetching lsof-4.90.e,8.txz: 100%  111 KiB 113.9kB/s    00:01
Checking integrity... done (0 conflicting)
[1/1] Reinstalling lsof-4.90.e,8...
[1/1] Extracting lsof-4.90.e,8: 100%

% lsof >/dev/null
lsof: WARNING: compiled for FreeBSD release 9.3-RELEASE-p45; this is
9.3-RELEASE-p43.