these 5 derivations will be built:
  /nix/store/091bj61y0ndwbm5x0sa1qk1kwqw09xpd-clan-runtime.drv
  /nix/store/n3kk05d0gbf34aqvsh5nklj83h20k1hy-clan-cli-source.drv
  /nix/store/ihhmdh6fvx1yf0l4ashg1pz1vx6i96y8-clan-cli.drv
  /nix/store/vmxryc6rpfmilf0rmmncqp5b9vsbf3dn-closure-info.drv
  /nix/store/f72jnjr05zr64faqx75ax4mh5q9ldc02-check-vars.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
error: path '/nix/store/bxizy2ak0qvzfa7ikaivmz7lwa71ccpf-check-vars' is not valid
error: Cannot build '/nix/store/f72jnjr05zr64faqx75ax4mh5q9ldc02-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/bxizy2ak0qvzfa7ikaivmz7lwa71ccpf-check-vars