Here is more detailed log from last night. KStars made it almost to the end but still crashed at 5 AM

The stack trace is exactly the same. I can share core dumps if anybody wants to look. Again, when I run GDB on those dumps, no helpful stuff (local variables, links to source files, etc.) appears despite the KStars debug package is installed. Do I miss some important step?
My imaging computer has only 2 GB of RAM. KStars itself takes over 1 GB. I tried running it under Ekos Debugger. GDB takes another 1.5 GB and things get really tough, though it doesn't die right away.

This time it again happened when Focus just started. Another interesting fact is that guiding is still running (Focus has been only doing a test exposure (why do I have it enabled?..)) Apparently, two cameras finished their exposures really close to each other and here the story ends.
My both cameras are ZWO now. Until about a week ago I used SX Lodestar as a guide camera and got similar crashes. I only have terse logs from the past. Here is one.

It ends during normal capture cycle. Guiding exposure was 1s. I do see a good chance that main and guide cameras finished at the same time.

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