stdout raises EINVAL when flush() is called on a closed pipe under win32. Maybe the exception should be caught and translated at raise location instead (sshserver.py).

#!/bin/sh

mkdir t
cd t
hg init
echo a > a
hg add a
hg commit -m test -d "1000000 0"
rm .hg/requires
hg tip
echo indoor-pool > .hg/requires
hg tip

true