these 2 derivations will be built:
  /nix/store/h8909pvj07yk9y32kvxy2x29115wnjm9-flake-inputs.drv
  /nix/store/w706ai2d5mnka1ss4llj6rnjcfg1fsrf-check-flake-inputs.drv
could not copy /nix/store/v19j61blj40339fraxvcr1ik4drs2jic-check-flake-inputs: error: gRPC FetchNars failed: failed to connect to all addresses; last error: UNKNOWN: ipv6:%5B2a01:4f9:3071:1fc8::1%5D:50051: handshaker shutdown
error: some outputs are unexpectedly invalid