Probably related to these bugs: https://bugs.php.net/bug.php?id=49948 https://bugs.php.net/bug.php?id=54563
no solution though.
This bug https://bugs.php.net/bug.php?id=49489
suggest that it might be related to Window's handling of strftime parameters. But since the error happens in stream_select() this is most probably a bug within PHP.
Some other project suggest that CRT means "C Run Time" and this is somehow harmless: http://www.tm-forum.com/viewtopic.php?p=154507#p154507
We could suppress error output in stream_select() but that might hide more important errors and the error might reoccur in other places.
So I suggest you try upgrading your PHP in the hope it fixes the problem.