Good point! This is what happens when you have too many open fronts ;-)
Anyhow, I've taken some time to dig into the problem and found the following

less test/lisp/shadowfile-tests.log
Running 8 tests (2021-06-18 08:33:34+0000, selector `(not (or (tag
:expensive-test) (tag :unstable)))')
   passed  1/8  shadow-test01-sites (0.743613 sec)
   passed  2/8  shadow-test02-files (0.007628 sec)
   passed  3/8  shadow-test03-expand-cluster-in-file-name (0.023701 sec)
   passed  4/8  shadow-test04-contract-file-name (0.007431 sec)
   passed  5/8  shadow-test05-file-match (0.023161 sec)
   passed  6/8  shadow-test06-literal-groups (0.029197 sec)
   passed  7/8  shadow-test07-regexp-groups (0.007492 sec)
Autosave file on local temporary directory, do you want to continue? (yes
or no)
test/lisp/shadowfile-tests.log (END)

I went and said 'yes' on the terminal where I was running make and the
build process ended.

This happens on commit bc44763b8342ee9e1bf43ffb202c73fee5ba0bf6

Best, /PA

On Thu, 17 Jun 2021 at 09:52, Eli Zaretskii <eliz@gnu.org> wrote:

> > From: Pedro Andres Aranda Gutierrez <paaguti@gmail.com>
> > Date: Thu, 17 Jun 2021 08:44:43 +0200
> >
> >   lisp/autorevert-tests.log
> > make[3]: *** [Makefile:331: check-doit] Error 1
> > make[3]: Leaving directory '/home/student/emacs/test'
> > make[2]: *** [Makefile:300: check] Error 2
> > make[2]: Leaving directory '/home/student/emacs/test'
> > make[1]: *** [Makefile:953: check] Error 2
> > make[1]: Leaving directory '/home/student/emacs'
> > dh_auto_test: error: make -j1 check VERBOSE=1 returned exit code 2
> > make: *** [debian/rules:17: binary] Error 2
>
> Please show the detailed report from ERT regarding the reason of the
> failure (it should be in test/lisp/autorevert-tests.log).
>
> Thanks.
>


-- 
Fragen sind nicht da um beantwortet zu werden,
Fragen sind da um gestellt zu werden
Georg Kreisler