2 Warnings when trying to validate

Hi Support,
My site validates but gives 2 warnings.

Document uses the Unicode Private Use Area(s), which should not be used in publicly exchanged documents. (Charmod C073)
<input type="submit" id="searchsubmit" value="" />
Section lacks heading. Consider using h2-h6 elements to add identifying headings to all sections.
<section id="container" class="two-columns-left">

Allthough they are not serious, maybe in a next release they can be fixed?
Thanks.
Johanna