bug#46722: test-map-into fails

[Philipp Stephani]

Am Mi., 5. Jan. 2022 um 19:25 Uhr schrieb Stefan Monnier via Bug
reports for GNU Emacs, the Swiss army knife of text editors
<bug-gnu-emacs@gnu.org>:
> > And we nowadays use generics a lot, so this could potentially affect
> > gobs of code.  So I'd rather we didn't install this on the
> > release branch.
>
> Fine by me,

Should the affected tests (these map tests, but I think I have a
similar case with the bindat tests) be marked as unstable in the
meantime?