I would like to propose loading nadvice before seq in loadup.el, for the
following reason:

If a seq.elc exists, and we dump bootstrap-emacs.pdmp, and seq.el gets
loaded, then the cl-generic machinery will want to warn about the fact
that certain method stuff in seq.elc is already compiled. This warning
wants to use somethign from nadvice, and ultimately a recursive load
(warnings.el requires icons.el, which uses seq, which leads to a
warning, etc).

I'm attaching an example log

(I guess one could get more prodictable behaviour if
bootstrap-emacs.pdmp would load only sources.)