The Julia 1.12 beta version dropped recently, so of course I gave it a trial run with the DI test suite. Apart from some JET issues, I think there are some actual bugs with Mooncake relying on Compiler internals which disappeared.

CI log: https://github.com/JuliaDiff/DifferentiationInterface.jl/actions/runs/14269026134/job/39997732540

Error:

ERROR: LoadError: UndefVarError: `inlining_policy` not defined in `Compiler`

Testing on the pre-release (version = "pre" in the CI YAML) would probably be good from now on