Function load_crate_graph_into_db 

pub(crate) fn load_crate_graph_into_db(
    crate_graph: CrateGraphBuilder,
    proc_macros: ProcMacrosBuilder,
    source_root_config: SourceRootConfig,
    vfs: &mut Vfs,
    receiver: &Receiver<Message>,
    db: &mut RootDatabase,
)