fn update_submodule(
parent: &Repository,
child: &mut Submodule<'_>,
cargo_config: &Config,
parent_remote_url: &Url
) -> CargoResult<()>
fn update_submodule(
parent: &Repository,
child: &mut Submodule<'_>,
cargo_config: &Config,
parent_remote_url: &Url
) -> CargoResult<()>