bug#40823: Test threads-join-error fails in test/src/thread-tests.log

[Eli Zaretskii]

> From: Stefan Kangas <stefan@marxist.se>
> Cc: 40823@debbugs.gnu.org
> Date: Sun, 26 Apr 2020 17:55:09 +0200
> 
> > What about just "cd test && make src/thread-tests"?
> 
> That works as expected:
> 
>     Ran 31 tests, 31 results as expected, 0 unexpected (2020-04-26 
> 17:49:31+0200, 3.324151 sec)
> 
> But AFAICT that method of running the tests doesn't run the failing
> test from "make check-all":
> 
>        FAILED  14/32  threads-join-error (0.000285 sec)

Why doesn't it run that test?