$ git push
Warning: Permanently added the ECDSA host key for IP address '2620:0:861:ed1a::3:16' to the list of known hosts.
Enumerating objects: 7, done.
Counting objects: 100% (7/7), done.
Delta compression using up to 8 threads
Compressing objects: 100% (4/4), done.
Writing objects: 100% (4/4), 1.31 KiB | 1.31 MiB/s, done.
Total 4 (delta 3), reused 0 (delta 0)
[2019-06-06 05:10:33] EXCEPTION: (Exception) Unable to write to logfile "/var/log/phd/ssh.log"! at [<phutil>/src/filesystem/PhutilDeferredLog.php:193]
arcanist(), ava(), phabricator(), phutil(), security(), sprint(), translations(), wmf-ext-misc()
  #0 <#2> PhutilDeferredLog::__destruct()
  #1 phlog(Exception) called at [<phutil>/src/filesystem/PhutilDeferredLog.php:201]
  #2 PhutilDeferredLog::write() called at [<phutil>/src/filesystem/PhutilDeferredLog.php:155]
  #3 PhutilDeferredLog::__destruct()
To ssh://git-ssh.wikimedia.org/diffusion/1922/tool-admin-web.git
   07a15d8..2e083cc  master -> master