Function resolve_std 

pub fn resolve_std<'gctx>(
    ws: &Workspace<'gctx>,
    target_data: &mut RustcTargetData<'gctx>,
    build_config: &BuildConfig,
    crates: &[String],
    kinds: &[CompileKind],
) -> CargoResult<(PackageSet<'gctx>, Resolve, ResolvedFeatures)>

Resolve the standard library dependencies.

• crates is the arg value from -Zbuild-std.