ConnectSuite.TestLocalConnectError: windows cannot connect to local lxd server

As seen in
    http://reports.vapour.ws/releases/issue/5706e088749a561d7fc5612d

The ConnectSuite.TestLocalConnectError: centos/windows cannot connect to local lxd server issue also affects windows

c.Assert(err.Error(), gc.Equals, `can't connect to the local LXD server: LXD refused connections; is LXD running?

    Please configure LXD by running:
     $ newgrp lxd
     $ lxd init
    `)
... obtained string = "" +
... "can't connect to the local LXD server: Get http://unix.socket/1.0: dial unix /tmp/juju-lxd-remote-test214449393: connection refused\n" +
... "\n" +
... "Please install LXD by running:\n" +
... "\t$ sudo apt-get install lxd\n" +
... "and then configure it with:\n" +
... "\t$ newgrp lxd\n" +
... "\t$ lxd init\n"
... expected string = "" +
... "can't connect to the local LXD server: LXD refused connections; is LXD running?\n" +
... "\n" +
... "Please configure LXD by running:\n" +
... "\t$ newgrp lxd\n" +
... "\t$ lxd init\n"