nix journalctl

[demo@nixos:~]$ journalctl -u nix-daemon
-- Logs begin at Tue 2019-06-11 16:27:28 UTC, end at Wed 2019-06-12 17:23:08 UTC. --
Jun 12 16:55:00 nixos systemd[1]: Started Nix Daemon.
Jun 12 16:55:00 nixos nix-daemon[4023]: accepted connection from pid 4019, user demo
Jun 12 16:55:03 nixos nix-daemon[4023]: accepted connection from pid 4029, user demo
Jun 12 16:55:29 nixos nix-daemon[4023]: accepted connection from pid 4052, user demo
Jun 12 16:55:29 nixos nix-daemon[4023]: accepted connection from pid 4058, user demo
Jun 12 16:56:01 nixos nix-daemon[4023]: accepted connection from pid 4081, user demo
Jun 12 16:56:02 nixos nix-daemon[4023]: accepted connection from pid 4087, user demo
Jun 12 16:58:22 nixos nix-daemon[4023]: accepted connection from pid 4209, user demo
Jun 12 16:58:23 nixos nix-daemon[4023]: accepted connection from pid 4215, user demo
Jun 12 16:59:33 nixos nix-daemon[4023]: accepted connection from pid 4282, user demo
Jun 12 16:59:34 nixos nix-daemon[4023]: accepted connection from pid 4288, user demo
Jun 12 17:02:14 nixos nix-daemon[4023]: accepted connection from pid 4342, user demo
Jun 12 17:02:15 nixos nix-daemon[4023]: accepted connection from pid 4348, user demo
Jun 12 17:03:08 nixos nix-daemon[4023]: accepted connection from pid 4392, user demo
Jun 12 17:03:08 nixos nix-daemon[4023]: accepted connection from pid 4398, user demo
Jun 12 17:03:42 nixos nix-daemon[4023]: accepted connection from pid 4458, user demo
Jun 12 17:03:43 nixos nix-daemon[4023]: accepted connection from pid 4464, user demo
Jun 12 17:03:44 nixos nix-daemon[4023]: accepted connection from pid 4471, user demo
Jun 12 17:03:44 nixos nix-daemon[4023]: error processing connection: unable to fork: Cannot allocate memory
Jun 12 17:04:00 nixos nix-daemon[4023]: accepted connection from pid 4481, user demo
Jun 12 17:04:01 nixos nix-daemon[4023]: accepted connection from pid 4487, user demo
Jun 12 17:04:02 nixos nix-daemon[4023]: accepted connection from pid 4494, user demo
Jun 12 17:04:02 nixos nix-daemon[4023]: error processing connection: unable to fork: Cannot allocate memory
Jun 12 17:05:11 nixos nix-daemon[4023]: accepted connection from pid 4558, user root (trusted)
Jun 12 17:05:11 nixos nix-daemon[4023]: error processing connection: unable to fork: Cannot allocate memory
Jun 12 17:05:12 nixos nix-daemon[4023]: accepted connection from pid 4562, user root (trusted)
Jun 12 17:05:13 nixos nix-daemon[4023]: accepted connection from pid 4568, user root (trusted)
Jun 12 17:05:14 nixos nix-daemon[4023]: accepted connection from pid 4575, user root (trusted)
Jun 12 17:05:14 nixos nix-daemon[4023]: error processing connection: unable to fork: Cannot allocate memory
Jun 12 17:07:33 nixos nix-daemon[4023]: accepted connection from pid 4623, user demo
Jun 12 17:07:33 nixos nix-daemon[4023]: error processing connection: unable to fork: Cannot allocate memory
Jun 12 17:07:34 nixos nix-daemon[4023]: accepted connection from pid 4631, user demo
Jun 12 17:07:34 nixos nix-daemon[4023]: error processing connection: unable to fork: Cannot allocate memory
Jun 12 17:07:34 nixos nix-daemon[4023]: accepted connection from pid 4635, user demo
Jun 12 17:07:34 nixos nix-daemon[4023]: error processing connection: unable to fork: Cannot allocate memory
Jun 12 17:07:35 nixos nix-daemon[4023]: accepted connection from pid 4648, user demo
Jun 12 17:07:35 nixos nix-daemon[4023]: error processing connection: unable to fork: Cannot allocate memory
Jun 12 17:07:36 nixos nix-daemon[4023]: accepted connection from pid 4664, user demo
Jun 12 17:07:36 nixos nix-daemon[4023]: error processing connection: unable to fork: Cannot allocate memory
Jun 12 17:20:13 nixos nix-daemon[4023]: accepted connection from pid 5043, user demo
Jun 12 17:20:13 nixos nix-daemon[4023]: error processing connection: unable to fork: Cannot allocate memory