$ /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://github.com/NorfairKing/sydtest?ref=mutation-control-group&rev=bd2e2a8d76d29094b5f89fb0ec6b47fa67d599fb#checks.x86_64-linux.mutation-sydtest-mutation-example --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 sydtest-mutation-example-mutation-sydtest-mutation-example from https://cache.staging.nix-ci.com Progress: 0 of 1 built, 1 of 3 downloaded from cache Downloading cached sydtest-mutation-example-check-sydtest-mutation-example from https://cache.staging.nix-ci.com Progress: 0 of 1 built, 2 of 3 downloaded from cache Downloading cached sydtest-mutation-example-mutation-check from https://cache.staging.nix-ci.com Progress: 0 of 1 built, 3 of 3 downloaded from cache /nix/store/bfy7k0v77qa3iiq6hx47c3r4fl5jsn0k-sydtest-mutation-example-mutation-check Build succeeded.