#![forbid(unsafe_code)]#![deny(rust_2018_idioms)] use std::str::FromStr; #[derive(Debug, Eq, PartialEq, Hash, Clone, Copy)]pub enum OutputFormat {    Human,    #[cfg(feature = "serde1")]    Json,} impl OutputFormat {    pub fn variants() -> &'static [&'static str] {        &[            "human",            #[cfg(feature = "serde1")]            "json",        ]    }} impl FromStr for OutputFormat {    type Err = String;     fn from_str(s: &str) -> Result<Self, Self::Err> {        let s_lc = s.to_ascii_lowercase();        Ok(match s_lc.as_str() {            "human" => OutputFormat::Human,            #[cfg(feature = "serde1")]            "json" => OutputFormat::Json,            _ => return Err(format!("Invalid output format: '{}'", s)),        })    }} mod protocol;pub use protocol::Protocol; pub mod pack;pub mod remote;pub mod repository;