Function cargo::util::auth::auth_token

pub fn auth_token(
    config: &Config,
    sid: &SourceId,
    login_url: Option<&Url>,
    operation: Operation<'_>,
    headers: Vec<String>,
    require_cred_provider_config: bool
) -> CargoResult<String>

Returns the token to use for the given registry. If a login_url is provided and a token is not available, the login_url will be included in the returned error.