this derivation will be built:
  /nix/store/pmi9378hvdkzy4y8dv1n7wbk7wg4rwjq-updater-tests-check.drv
could not copy /nix/store/xkl58d4lq5c7fb50fdl1pwcgvqmw15hq-updater-tests-check: error: gRPC FetchNars failed: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.2:50051: connection attempt timed out before receiving SETTINGS frame
error: some outputs are unexpectedly invalid