A few interesting observations, but everything was fixable and I could explain with confidence what was going on.
== 1 ==
I have seen the warning message below before, sometimes it is Firefox. The file did and does exist. Wondering if this is a real warning or just a missing leading slash?
checking available disk space...
warning: could not get file information for usr/lib/thunderbird/distribution/distribution.ini
:: Running pre-transaction hooks...
== 2 ==
I missed the 5.13 preset file when I cleaned up the 5.13 kernel awhile back, causing the messages below. I ran into some bumps along the way. At this point in time, all I needed to do was remove linux513.preset file.
==> Building image from preset: /etc/mkinitcpio.d/linux513.preset: 'default'
-> -k /boot/vmlinuz-5.13-x86_64 -c /etc/mkinitcpio.conf -g /boot/initramfs-5.13-x86_64.img
==> ERROR: specified kernel image does not exist: `/boot/vmlinuz-5.13-x86_64'
== 3 ==
I don’t think I have ever installed a Manjaro update without seeing these messages. So far, they seem harmless 
warning: dependency cycle detected:
warning: bashrc-manjaro will be installed before its bash dependency
warning: dependency cycle detected:
warning: freetype2
...
warning: mesa
...
warning: lib32-mesa
...
warning: lib32-harfbuzz