Function cargo::ops::cargo_update::upgrade_dependency

source ยท 
fn upgrade_dependency(
    gctx: &GlobalContext,
    to_update: &Vec<PackageIdSpec>,
    registry: &mut PackageRegistry<'_>,
    upgrades: &mut HashMap<(String, SourceId), Version>,
    upgrade_messages: &mut HashSet<String>,
    dependency: Dependency,
) -> CargoResult<Dependency>