> I tested with both PR 19312 and PR 19308 and I still have the same crash 

Which test is causing the issue? Does it still crash if you comment test_input_no_stdout_fileno()? Try to rename it "Xtest_input_no_stdout_fileno" to skip it.

What if you only run this test?

./python -m test test_builtin -m test_input_no_stdout_fileno -F -j10 -v

Maybe this test should register a signal handler for SIGHUP?

This bug looks like bpo-38547 which affected test_pty. I fixed it by registering a SIGHUP signal handler:

commit a1838ec2592e5082c75c77888f2a7a3eb21133e5
Author: Victor Stinner <vstinner@python.org>
Date:   Mon Dec 9 11:57:05 2019 +0100

    bpo-38547: Fix test_pty if the process is the session leader (GH-17519)
    
    Fix test_pty: if the process is the session leader, closing the
    master file descriptor raises a SIGHUP signal: simply ignore SIGHUP
    when running the tests.