Aaaaand now I realise I had the wrong save in that test. Yes: loading a 0.12.35 save from before we played on 0.13.0 always works.

Sorry about the noise.

To be clear: yes, we can replicate the problem with a save that wasn't run with 0.13.0

Attached a save file that's a 0.12.35 game that we took straight to 0.13.1

This bug is related to the same situation: viewtopic.php?f=7&t=27677

I have a reproducable reliable desync, using the headless server on our save game (imported from 0.12.35, used on 0.13.0, and now launching on 0.13.1).

We would see desyncs in a continuous loop for 5-10 minutes on first join, until it finally let a player on the game.

There are no mods in use ...

Yep, I had to change my launch script to be:
in order to start the process.

Now it's started and everything's working.

I'm attempting to run the headless server, and this is the crash I get:

0.000 2016-06-27 20:17:33; Factorio 0.13.0 (Build 22782, linux64, headless)
0.000 Operating system: Linux
0.000 Not rotating logs.
0.000 Program arguments: "/opt/factorio/bin/x64/factorio" "--create" "/opt/factorio/saves ...