WindowsPipes is not compatible with php 7.3

[SailorMax]

Symfony/Process version(s) affected: 4.1.4

Description
PHP 7.3 allow unlink() 'locked' file at Pipes/WindowsPipes.php#L57 and return true.
In result if start 2 processes one by one, second process will delete file of previous one.
Possible this is error in PHP, but I can't create good bug report for PHP developers.

How to reproduce
I use fastest to use with phpunit in async mode. If run 2+ tests, first always return error.

Possible Solution
before for ($i = 0;; ++$i) { add

if (!isset($GLOBALS["sf_proc_i"]))
	$GLOBALS["sf_proc_i"] = 0;
else
	$GLOBALS["sf_proc_i"]++;
$i =& $GLOBALS["sf_proc_i"];
if ($i > 1024)
	$i = 0;

plus replace for ($i = 0;; ++$i) { on for (;; ++$i) {

Additional context
no

[nicolas-grekas]

Can you please check if #28689 fixes your issue?

[nicolas-grekas]

Oh, and tell us what the error is if not?

[SailorMax]

No, this fix did not help. With it logic looks more correct (tries new $i for all pipes, not only for second, for example), but it did not fix the problem.
The real problem in first !unlink($file). In PHP 7.3 it successfully delete the file, which in use by first process, and start to use it for second process.

[selcuk-karateke]

Can I uninstall this package?