let link_meta = build_link_meta(crate_hash);
let exported_symbols = ::find_exported_symbols(tcx);
let (metadata, _hashes) = tcx.encode_metadata(&link_meta, &exported_symbols);
let link_meta = build_link_meta(crate_hash);
let exported_symbols = ::find_exported_symbols(tcx);
let (metadata, _hashes) = tcx.encode_metadata(&link_meta, &exported_symbols);