$ /nix/store/vzx1mi9c0xfadmsm9dhd83d005cb1qs9-coreutils-9.8/bin/timeout --kill-after=15s 7200s /nix/store/86n4l5yri6hys3zk2mwy2azcv9prqb8j-nix-2.31.4/bin/nix --extra-experimental-features nix-command --extra-experimental-features flakes --log-format internal-json build --no-link git+https://github.com/NorfairKing/validity?ref=development&rev=9d6ca69e9369af1e2a658b37ac9f84d11ef2cbb2#devShells.x86_64-linux.default --print-build-logs warning: ignoring untrusted flake configuration setting 'extra-substituters'. Pass '--accept-flake-config' to trust it warning: ignoring untrusted flake configuration setting 'extra-trusted-public-keys'. Pass '--accept-flake-config' to trust it  Downloading cached niv-0.2.22-bin from https://cache.staging.nix-ci.com Downloading cached hoogle-with-packages from https://cache.staging.nix-ci.com Downloading cached sydtest-discover-0.0.0.4-doc from https://validity.cachix.org Progress: 0 of 1 built, 1 of 6 downloaded from cache (2 downloading) Progress: 0 of 1 built, 2 of 6 downloaded from cache (1 downloading) Downloading cached ghc-9.10.3-with-packages from https://cache.staging.nix-ci.com Progress: 0 of 1 built, 3 of 6 downloaded from cache (1 downloading) Progress: 0 of 1 built, 4 of 6 downloaded from cache Downloading cached sydtest-discover from https://cache.staging.nix-ci.com Progress: 0 of 1 built, 5 of 6 downloaded from cache Downloading cached validity-shell from https://cache.staging.nix-ci.com Progress: 0 of 1 built, 6 of 6 downloaded from cache