fn download_crate(name: &str, version: &Version) -> Result<Vec<u8>, Box<Error>> {
    let download_url = format!("{}/{}/{}/download", CRATES_API_ROOT, name, version);
    debug!("Downloading crate `{}=={}` from {}", name, version, download_url);
    let mut response = reqwest::get(&download_url)?;

    let content_length: Option<usize> = response.headers().get(CONTENT_LENGTH)
        .and_then(|ct_len| ct_len.to_str().ok())
        .and_then(|ct_len| ct_len.parse().ok());
    trace!("Download size: {}", content_length.map_or("<unknown>".into(), |cl| format!("{} bytes", cl)));
    let mut bytes = match content_length {
        Some(cl) => Vec::with_capacity(cl),
        None => Vec::new(),
    };
    response.read_to_end(&mut bytes)?;

    info!("Crate `{}=={}` downloaded successfully", name, version);
    Ok(bytes)
}
/// Download given crate and return it as a vector of gzipped bytes.
Download given crate and return it as a vector of gzipped bytes.
Download given crate and return it as a vector of gzipped bytes .
fn download_crate(name: &str, version: &Version) -> Result<Vec<u8>, Box<Error>> {
    let download_url = format!("{}/{}/{}/download", CRATES_API_ROOT, name, version);
    debug!("Downloading crate `{}=={}` from {}", name, version, download_url);
    let mut response = reqwest::get(&download_url)?;
    let content_length: Option<usize> = response.headers().get(CONTENT_LENGTH)
        .and_then(|ct_len| ct_len.to_str().ok())
        .and_then(|ct_len| ct_len.parse().ok());
    trace!("Download size: {}", content_length.map_or("<unknown>".into(), |cl| format!("{} bytes", cl)));
    let mut bytes = match content_length {
        Some(cl) => Vec::with_capacity(cl),
        None => Vec::new(),
    };
    response.read_to_end(&mut bytes)?;
    info!("Crate `{}=={}` downloaded successfully", name, version);
    Ok(bytes)
}
fn download_crate ( name : & str , version : & Version ) -> Result < Vec < u8 > , Box < Error > > { let download_url = format ! ( " " CRATES_API_ROOT name version ) ; debug ! ( " " name version download_url ) ; let mut response = reqwest :: get ( & download_url ) ? ; let content_length : Option < usize > = response . headers ( ) . get ( CONTENT_LENGTH ) . and_then ( | ct_len | ct_len . to_str ( ) . ok ( ) ) . and_then ( | ct_len | ct_len . parse ( ) . ok ( ) ) ; trace ! ( " " content_length map_or ( " " into ( ) cl format ( " " cl ) ) ) ; let mut bytes = match content_length { Some ( cl ) => Vec :: with_capacity ( cl ) , None => Vec :: new ( ) , } ; response . read_to_end ( & mut bytes ) ? ; info ! ( " " name version ) ; Ok ( bytes ) }
Download given crate and return it as a vector of gzipped bytes.
Download given crate and return it as a vector of gzipped bytes .
name
&str
version
&Version