$ /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/conformance?ref=master&rev=b9f82cb48f849452233caf9eaca76ea117f6252e#checks.x86_64-linux.forwardCompatibility --print-build-logs  Downloading cached conformance-0.1.0.0-doc from https://cache.staging.nix-ci.com Progress: 0 of 3 built, 1 of 4 downloaded from cache Downloading cached conformance from https://cache.staging.nix-ci.com Downloading cached conformance-gen-0.0.0.0-doc from https://cache.staging.nix-ci.com Progress: 0 of 3 built, 2 of 4 downloaded from cache (1 downloading) Progress: 0 of 3 built, 3 of 4 downloaded from cache Downloading cached conformance-gen from https://cache.staging.nix-ci.com Progress: 0 of 2 built, 4 of 4 downloaded from cache Building conformance-release [conformance-release] /nix/store/d1chkpblwblsh706zn7q17dm5qp2aa7d-conformance-gen-0.0.0.0/nix-support: [conformance-release] propagated-build-inputs: Keeping existing link to /nix/store/izxrp77h5wynqfdpm6pzlm6spiz4r2qb-conformance-0.1.0.0/nix-support/propagated-build-inputs [post-build-hook] Uploading to the NixCI staging cache: /nix/store/471hz659k58rxih9v6cjf003dh93yjw5-conformance-release [post-build-hook] copying 0 paths... [post-build-hook] copying 0 paths... Progress: 1 of 2 built, 4 of 4 downloaded from cache