Instacrash with fluid.umap~ (minimum @numneighbours?)

[rconstanzo]

I imagine this relates to another bug report, but it looks like that got moved/closed. I think having to do with the minimum amount of @numneighbours. In this use case I'm using fluid.datasetquery~ to proccess a dataset, so I don't know how many (or few) matches I will get. So without building a bunch of scaffolding before UMAP, it's pretty dangerous.

It's 100% reproducible on version 1.0.4+sha.9b29419.core.sha.60e1a77

I'm on Max 8.3.1 on OSX 10.14.6

Steps to reproduce:
load crashing_dataset.json into fluid.dataset~
send fittransform starter to fluid.umap~

crashStuff.zip