these 2 derivations will be built:
  /nix/store/1nlziwh0xrbkrw00wgnxmszz1gwd47ah-closure-info.drv
  /nix/store/xqkfw8j608kw773ihzbg1l9mqikxnanw-check-vars.drv
error: path '/nix/store/0z5w718pw038d8v3icdd5xgsr461gy8l-check-vars' is not valid
error: Cannot build '/nix/store/xqkfw8j608kw773ihzbg1l9mqikxnanw-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/0z5w718pw038d8v3icdd5xgsr461gy8l-check-vars