Warnings on upgrade from 11.2-RELEASE to 12.0-RC3

Hello,

I did a test upgrade from 11.2-RELEASE to 12.-RC3 and got these 
warnings.  They look mostly harmless, but mentioning them in case the 
installer could do something to suppress them if this is the case.

% sudo freebsd-update -r 12.0-RC3 upgrade
% sudo freebsd-update install
[reboot]
% sudo freebsd-update install
Password:
src component not installed, skipped
Installing updates...install: chown 0:0 ///proc: Operation not supported
install: chmod 555 ///proc: Operation not supported

% grep proc /etc/fstab
proc    /proc           procfs          rw      0       0

% sudo freebsd-update install
Password:
src component not installed, skipped
Installing updates...rmdir: 
///var/db/etcupdate/current/usr/share/openssl/man/en.ISO8859-1: 
Directory not empty
rmdir: ///var/db/etcupdate/current/usr/share/openssl/man: Directory not 
empty
rmdir: ///var/db/etcupdate/current/usr/share/openssl: Directory not empty
rmdir: ///var/db/etcupdate/current/usr/share/man/en.UTF-8: Directory not 
empty
rmdir: ///var/db/etcupdate/current/usr/share/man/en.ISO8859-1: Directory 
not empty
rmdir: ///var/db/etcupdate/current/usr/share/man: Directory not empty

I'm fairly certain that I got the /proc warning in the past for 11.0-RC 
on the same system.  Is the installation aware of and handling 
mountpoints correctly?

Likewise the manpages:

% ls -l /var/db/etcupdate/current/usr/share/openssl/man/en.ISO8859-1
total 1
lrwxr-xr-x  1 root  wheel  7 15 Nov  2014 man1 -> ../man1
lrwxr-xr-x  1 root  wheel  7 15 Nov  2014 man3 -> ../man3

% ls -l /var/db/etcupdate/current/usr/share/man/en.UTF-8
total 5
lrwxr-xr-x  1 root  wheel  7 15 Nov  2014 man1 -> ../man1
lrwxr-xr-x  1 root  wheel  7 15 Nov  2014 man2 -> ../man2
lrwxr-xr-x  1 root  wheel  7 15 Nov  2014 man3 -> ../man3
lrwxr-xr-x  1 root  wheel  7 15 Nov  2014 man4 -> ../man4
lrwxr-xr-x  1 root  wheel  7 15 Nov  2014 man5 -> ../man5
lrwxr-xr-x  1 root  wheel  7 15 Nov  2014 man6 -> ../man6
lrwxr-xr-x  1 root  wheel  7 15 Nov  2014 man7 -> ../man7
lrwxr-xr-x  1 root  wheel  7 15 Nov  2014 man8 -> ../man8
lrwxr-xr-x  1 root  wheel  7 15 Nov  2014 man9 -> ../man9

broken symlinks (self-referencing) in both cases.  Not sure what has 
made this happen now or at some time in the past, but it's certainly not 
been due to manual intervention; this system has always been updated via 
freebsd-update since back to 10.0.  Should it be noticing and fixing 
such broken links?  Any ideas what caused them in the first place?


Regards,
Roger