build checks.x86_64-linux.default

Reproduce this run
  1. 0.80 s $ /nix/store/9ypz3flqsrl5xl495mm8h645gadjsxi1-coreutils-9.11/bin/timeout --kill-after=15s 7200s /nix/store/23zk8sgzamrbmj1fday15szf7f2279s8-nix-2.34.7/bin/nix --extra-experimental-features nix-command --extra-experimental-features flakes --log-format internal-json build --no-link --print-out-paths git+https://codeberg.org/mtlynch/mikeville?ref=multiplayer&rev=e9dd1f5d9b0dd1d52f9f5dedcf186c8311f15b44#checks.x86_64-linux.default --print-build-logs
  2. 0.84 s
  3. 0.84 s Waiting for lock on check-frontend
  4. 5.73 s Progress: 1 of 1 built
  5. 5.73 s /nix/store/f7jz1z8lfi0ilbgp33fy0kbxilf3svvz-check-frontend-0.0.0
  6. 5.75 s Build succeeded.