I tried using the latest stable Flux.jl with the latest stable Julia interpreter about a year ago, and most of it didn't work. Some of the simplest model usage examples led to a traceback with dozens of frames, ending in an incomprehensible internal error that I couldn't possibly understand as a beginner.

It seems to me that Julia is still moving too fast for its own good. At some point, something needs to stabilize for it to be worth adopting.