Could this problem be associated with issue4749? It was found that
something goes wrong when two cmd children processes are spawned from
different threads, when the first exits, it is closing file handles
shared with the first (or something like that) and it's causing a
problem with logging in issue4749. That bug has been closed since it's
not a problem with logging itself so I'm searching for other similar
bugs to see if we can create a new bug that documents the cause and
link to these other bugs that are all showing different symptoms of the
bug. Thoughts?