mut base.caps.CapTry

mut #[T$0,R$0](data: iso T$0, try: read base.caps.TryBody[T$0,R$0]): mut base.Res[R$0,imm base.Info] -> …,
mut #[R$0](try: read base.caps.TryBody[R$0]): mut base.Res[R$0,imm base.Info] -> …,
mut #[T$0,R$0](data: iso T$0, try: read base.caps.TryBody[T$0,R$0]): mut base.Res[R$0,imm base.Info] -> …,
mut #[R$0](try: read base.caps.TryBody[R$0]): mut base.Res[R$0,imm base.Info] -> …,