You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: lib.rs
    path of file: ./repos/cargo-binstall/crates/binstalk-registry/src
    
    the code of the file until where you have to start completion: #![cfg_attr(docsrs, feature(doc_auto_cfg))]

use std::{io, str::FromStr, sync::Arc};

use base16::DecodeError as Base16DecodeError;
use binstalk_downloader::{
    download::DownloadError,
    remote::{Client, Error as RemoteError},
};
use binstalk_types::cargo_toml_binstall::Meta;
use cargo_toml_workspace::cargo_toml::{Error as CargoTomlError, Manifest};
use compact_str::CompactString;
use leon::{ParseError, RenderError};
use miette::Diagnostic;
use semver::VersionReq;
use serde_json::Error as JsonError;
use thiserror::Error as ThisError;
use tokio::task;
use url::{ParseError as UrlParseError, Url};

#
    
    fn from_str_inner(s: &str) -> Result<Self, InvalidRegistryErrorInner> {
        if let Some(s) = s.strip_prefix("sparse+") {
            let url = Url::parse(s.trim_end_matches('/'))?;

            let scheme = url.scheme();
            if scheme != "http" && scheme != "https" {
                Err(InvalidRegistryErrorInner::InvalidScheme(Box::new(url)))
            } else {
                Ok(Self::Sparse(Arc::new(SparseRegistry::new(url))))
            }
        } else {
            #[cfg(not(feature = "git"))]
            {
                Err(InvalidRegistryErrorInner::GitRegistryNotSupported)
            }
            #[cfg(feature = "git")]
            {
                let url = GitUrl::from_str(s).map_err(Box::new)?;
                Ok(Self::Git(GitRegistry::new(url)))
            }
        }
    }