ssh(1) -v gives debug1: pledge: filesystem full

[Marcus MERIGHI]

Hello!

By accident I noticed that 

        $ ssh -v $host

gives me, among many other lines, this

        debug1: pledge: filesystem full

Tried with multiple hosts. None of the filesystems on the hosts (client,
servers) is full. The messages appears when connecting from -current (as
of yesterday) to 6.9, when connecting from 6.9 to 6.9 and when
connecting from -current to -current.

My .ssh/config has:

        Host *
                ServerAliveInterval 15
                ServerAliveCountMax 4
                AddKeysToAgent yes

        Host a b c d e f
                ForwardAgent yes

        host g h
                ProxyJump i
                CheckHostIP no

Is this expected? Something to worry about?

Marcus