[2.0.11] Crash saving "fluidBoxIDRecord != fluidBoxToIDMapping.end() was not true"

[Dezzick]

Factorio crashed while autosaving. No mods other than the official space age set.

I was throwing together oil cracking on Vulcanus. Log suggests something to do with the fluid system. Was alt-tabbed using windows calculator during autosave.

I've been unable to reproduce - tried to recreate my steps as best I could but not managed to find the right combination of things to force a crash on save.

Attached:
- log
- autosave1 is the autosave pre-crash
- autosave2.tmp is the _failed_ autosave in case it's useful
- bug_3 is my best attempt at recreating the fluid system as it was when the autosave took place

[Rseding91]

Thanks for the report. If you're ever able to reproduce this please let us know.