I realize running planaria machines on the BTC chain is likely an unsupported usecase but I was experimenting with a genesis machine, which crashes on block height 91880
"errmsg": "E11000 duplicate key error collection: 1BTChYUvcHwPn6cBVtNC2CEbh22MEsob3L.c index: tx.h_1 dup key: { : "e3bf3d07d4b0375638d5f1db5255fe07ba2c4cb067cd81b84ee974b6585fb468" }",
https://gist.github.com/mboyd1/409dc134c55c4fa2dad1bcc2ad2a7b09