With more experimenting, this is looking like a bug. I upgraded clearml-agent to 1.4.0rc and now it finds the wheel and downloads it, but then fails with the same error as above, saying the .whl file "is not a supported wheel on this platform". But why would this wheel not be supported? It's a standard x86 machine that can run this same code fine if I manually create an env and train the model without using ClearML.