Runtime crash

[pchiusano]

I haven't minimized this, but here's a repro, using this branch https://share.unison-lang.org/@pchiusano/arcella/code/@pchiusano/crash/latest

clone @pchiusano/arcella/code/@pchiusano/crash and then run main to get:

    Failure
      (typeLink MiscFailure)
      "marshalToForeign: unhandled closure: Closure {unClosure = GUnboxedTypeTag NatTag}\nCallStack (from HasCallStack):\n  error, called at src/Unison/Runtime/Stack.hs:511:3 in unison-runtime-0.0.0-8RqOLOzZvLBDp1hEXUXC1j:Unison.Runtime.Stack\n  marshalToForeign, called at src/Unison/Runtime/Stack.hs:1189:19 in unison-runtime-0.0.0-8RqOLOzZvLBDp1hEXUXC1j:Unison.Runtime.Stack"
      (Any ())

version: 0.5.32.

I can also reproduce on Cloud if I switch Cloud.main.local for Cloud.main, same error.