these 2 derivations will be built:
  /nix/store/dq54hnmnksxd244hd8gdlq83j1fzam7w-closure-info.drv
  /nix/store/c820asy4v9vqbv73vjmfvrl06lh36md3-check-vars.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
error: path '/nix/store/7ndk5v1s0yk3l263cvl0ynsbr78hzhnw-check-vars' is not valid
error: Cannot build '/nix/store/c820asy4v9vqbv73vjmfvrl06lh36md3-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/7ndk5v1s0yk3l263cvl0ynsbr78hzhnw-check-vars