$ /nix/store/bhv6xyvqw6gjs3j488gi1z6wdv18bdpa-coreutils-9.11/bin/timeout --kill-after=15s 7200s /nix/store/6f7ai6jmdrlg1r5viixgpysdxa5yg9y9-nix-ci-eval-0.0.0/bin/nix-ci-eval --flake git+https://github.com/NorfairKing/sydtest?ref=refs%2Fpull%2F157%2Fmerge&rev=9a1e7238780cb1985b75c80d4ee39ea6cff15951 --system x86_64-linux
fatal: unable to access 'https://gitlab.horizon-haskell.net/package-sets/horizon-advance/': The requested URL returned error: 504
nix-ci-eval: failed to evaluate flake: error:
       … while updating the lock file of flake 'git+https://github.com/NorfairKing/sydtest?ref=refs/pull/157/merge&rev=9a1e7238780cb1985b75c80d4ee39ea6cff15951&shallow=1'

       … while updating the flake input 'horizon-advance'

       … while fetching the input 'git+https://gitlab.horizon-haskell.net/package-sets/horizon-advance?ref=refs/heads/lts/ghc-9.12.x&rev=fcb43e438bd603583b829a7330f4fe2a0a00f45e'

       error: Failed to fetch git repository 'https://gitlab.horizon-haskell.net/package-sets/horizon-advance'
Job discovery failed.