It's not the initial sync, I've copied the blockchain ("blocks" and "chainstate" folders) from an in-sync node and it took a while to start, but now it's synchronized, the crash happens during normal operation, it's not using much processor time, just a ton of memory. I don't have swap enabled, I'm really not very keen on enabling swap to flash - but does it really need swap when it has 1 GB of RAM?? As I said, memory usage is around 350MB (I've restarted it a few hours ago and now it's at 293MB (the VSZ field in "ps -w").

I'm now running it with -debug and sending output to the console, so I should see it when it crashes, previous runs were without -debug.

Also, I can't run the 64-bit version, this is a 32-bit x86 system based on Intel Atom.