$ /nix/store/rry6qingvsrqmc7ll7jgaqpybcbdgf5v-coreutils-9.7/bin/timeout --kill-after=15s 1800s /nix/store/mycbwkcm1jzjgsaiydvzib9phmzfz9vx-nix-2.31.1/bin/nix --extra-experimental-features nix-command --extra-experimental-features flakes --extra-substituters https://sellout.cachix.org --extra-trusted-public-keys sellout.cachix.org-1:v37cTpWBEycnYxSPAgSQ57Wiqd3wjljni2aC0Xry1DE= --netrc-file /tmp/nix-ci-worker-d3cde9f620ebce06/cachix-872dad23aa15f22d/netrc --extra-substituters https://cache.nix-ci.com --extra-trusted-public-keys nix-ci-staging:Q5+aawDG0LPCgu1fP9e+9hktvsfSyvu/Xe5PvzTLRVs= --netrc-file /tmp/nix-ci-worker-d3cde9f620ebce06/nix-ci-cache-f92fd27fc584d5a3/netrc --extra-substituters ssh-ng://worker.nix-ci.com?ssh-key=/tmp/nix-ci-worker-d3cde9f620ebce06/ssh-key-6d17565337b759c9/ssh.key&remote-store=/cache/nix-ci/&base64-ssh-public-host-key=c3NoLWVkMjU1MTkgQUFBQUMzTnphQzFsWkRJMU5URTVBQUFBSU9EQXdicHlRaVYwb2lyakhxbHIwbitnWDNNVjQwbDBKTmlKdVNDZHdoZ1o= --extra-trusted-public-keys nix-ci-staging:Q5+aawDG0LPCgu1fP9e+9hktvsfSyvu/Xe5PvzTLRVs= --print-build-logs build --no-link git+https://x-access-token:<REDACTED:GITHUB_ACCESS_TOKEN>@github.com/sellout/flaky-environments?ref=upstream-project-config&rev=3a896f9d9b0b4a6e56178f07ada02d4253aed986#devShells.x86_64-linux.c --post-build-hook /tmp/nix-ci-worker-d3cde9f620ebce06/nix-ci-cache-upload.sh
warning: ignoring untrusted flake configuration setting 'allow-import-from-derivation'.
Pass '--accept-flake-config' to trust it
warning: ignoring untrusted flake configuration setting 'extra-experimental-features'.
Pass '--accept-flake-config' to trust it
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
warning: ignoring untrusted flake configuration setting 'sandbox'.
Pass '--accept-flake-config' to trust it
warning: ignoring untrusted flake configuration setting 'use-registries'.
Pass '--accept-flake-config' to trust it
these 5 paths will be fetched (14.48 MiB download, 61.41 MiB unpacked):
  /nix/store/7va01f1pa6bkxy2a869dx148ajxx16dd-cmake-3.31.6
  /nix/store/wi76jwycrsjkxnlz959jz1pqpvqdddj4-curl-8.14.1
  /nix/store/915jsq2ab1dd35yvzl89ia3ksh3fgd67-gnumake-4.4.1
  /nix/store/zskyahxxijal3widnc1si63gvv27j6z3-nix-shell
  /nix/store/kivsj4ga5hgmfl8g4ccy12fljkpxks64-rhash-1.4.4
copying path '/nix/store/915jsq2ab1dd35yvzl89ia3ksh3fgd67-gnumake-4.4.1' from 'https://cache.nix-ci.com'...
copying path '/nix/store/wi76jwycrsjkxnlz959jz1pqpvqdddj4-curl-8.14.1' from 'https://cache.nix-ci.com'...
copying path '/nix/store/kivsj4ga5hgmfl8g4ccy12fljkpxks64-rhash-1.4.4' from 'https://cache.nix-ci.com'...
copying path '/nix/store/7va01f1pa6bkxy2a869dx148ajxx16dd-cmake-3.31.6' from 'https://cache.nix-ci.com'...
copying path '/nix/store/zskyahxxijal3widnc1si63gvv27j6z3-nix-shell' from 'https://cache.nix-ci.com'...