type t = | Not_running | 
| No_server_mode | 
| Rpc_menu_failed of string * Core.Error.t | 
| Rpc_failed of string * exn | 
| Tcp_failed of string * exn | 
val to_string : t ‑> stringval may_retry : t ‑> boolval exit_code : t ‑> intval to_error : t ‑> Core.Error.t