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[1.1.46] Crash after unreasonable power usage

Posted: Fri Nov 12, 2021 10:33 pm
by Warger
During my playthrough i encountered a strange thing. Unfortunately i don't know how to reproduce it nor what caused it.

Power usage:
https://clips.twitch.tv/BlueDirtyCrabsH ... 0hUSftzxqD
https://clips.twitch.tv/TastyWimpyHedge ... YSs8Khk954

Crash:
https://clips.twitch.tv/CleverScrumptio ... JyeOki5WRR

long video that has everything in it:
https://www.twitch.tv/videos/1203779142

Re: [1.1.46] Crash after unreasonable power usage

Posted: Fri Nov 12, 2021 10:35 pm
by AntiElitz
Just wanted to add that there is no save file as this Speedrun turned autosave off.
Moment of the final crash https://clips.twitch.tv/ShinyFurryDillA ... UNapuC6on5

Re: [1.1.46] Crash after unreasonable power usage

Posted: Sat Nov 13, 2021 5:19 pm
by Rseding91
Thanks for the report. Based off the weird scenario before the crash and looking at the crash itself my current thought is a random bit-flip. The crash itself is trying to read an energy source prototype from an inserter that is nullptr while in an electric network. Which ... should never be possible since the energy source has to be used to put it into the electric network to begin with meaning it wasn't nullptr when it was added but became nullptr in the meantime.

Have you been able to reproduce any of the issue(s) you've shown here? Or have you had any other weird issues/crashes?

Re: [1.1.46] Crash after unreasonable power usage

Posted: Sun Nov 14, 2021 4:09 pm
by Warger
I have tried reproducing the steps (which basically means practicing for that part of the speedrun) however i have not been able to reproduce it at all...
I am going to grab the seed that i used in the run that had the crash and i will start practicing on that too, to try and replicate it.
However i haven't done anything that i usually don't do in the run of the clips. I have done the same steps dozen of times and i never had something like this happen. I still don't know what could possibly have caused it.

Also as i mentioned in the long video this is the first crash (in vanilla factorio) that i have ever experienced.

Re: [1.1.46] Crash after unreasonable power usage

Posted: Sun Nov 14, 2021 5:09 pm
by Rseding91
Warger wrote: Sun Nov 14, 2021 4:09 pm I have tried reproducing the steps (which basically means practicing for that part of the speedrun) however i have not been able to reproduce it at all...
I am going to grab the seed that i used in the run that had the crash and i will start practicing on that too, to try and replicate it.
However i haven't done anything that i usually don't do in the run of the clips. I have done the same steps dozen of times and i never had something like this happen. I still don't know what could possibly have caused it.

Also as i mentioned in the long video this is the first crash (in vanilla factorio) that i have ever experienced.
It's entirely possible it was a random bit flip not caused by anything being defective but just the nature of computers: they are not infallible and do have random errors. Most of the time it doesn't cause any issue but sometimes the right bit is flipped and it can cause stuff like this.