build packages.x86_64-linux.go-tests

Reproduce this run
  1. 2.19 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/little-moments?ref=idea-3-behavior-rich-media-store&rev=b5a6297db8cce3e05c983560500a45fb24c157e9&shallow=1#packages.x86_64-linux.go-tests --print-build-logs
  2. 3.34 s
  3. 3.34 s Downloading cached source from https://cache.nix-ci.com
  4. 10.31 s Downloaded cached source (194.4 MiB) in 6.9s