[issue39812] Avoid daemon threads in concurrent.futures

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

I reopen the issue since it introduced a regression on buildbots. If no fix is found soon (let's say in 1 or 2 days), I will revert the change to get more time to investigate. If buildbots remain red, we will be other regressions which would make the situation even worse.

----------
resolution: fixed -> 
status: closed -> open

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39812>
_______________________________________