this derivation will be built:
  /nix/store/r8fz4i6vnqb0ghsij19dji0jf5b0cxv3-interpolate-conformance.drv
farm.numtide.com:50051: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.2:50051: tcp handshaker shutdown, retrying