module V1 : Core_kernel__.Stable_module_types.S1 with type 'a t = 'a t
Or_error.t is wire compatible with V2.t, but not V1.t, like Info.Stable and Error.Stable.
Or_error.t
V2.t
V1.t
Info.Stable
Error.Stable
module V2 : Core_kernel__.Stable_module_types.S1 with type 'a t = 'a t