$ /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-7e6bafb50472c9cc/cachix-2a0bed13c4afecf4/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-7e6bafb50472c9cc/nix-ci-cache-f004b6e45e7297af/netrc --extra-substituters ssh-ng://worker.nix-ci.com?ssh-key=/tmp/nix-ci-worker-7e6bafb50472c9cc/ssh-key-b424c934321708e9/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?ref=upstream-configs&rev=0032b5182e557d031d32f83252b040bd4c6a283c#devShells.x86_64-linux.default --post-build-hook /tmp/nix-ci-worker-7e6bafb50472c9cc/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
warning: error: unable to download 'https://sellout.cachix.org/a401jxcqazmbsry2247qxy1byxyavn1x.narinfo': HTTP error 500; retrying in 256 ms
warning: error: unable to download 'https://sellout.cachix.org/a401jxcqazmbsry2247qxy1byxyavn1x.narinfo': HTTP error 500; retrying in 668 ms
warning: error: unable to download 'https://sellout.cachix.org/a401jxcqazmbsry2247qxy1byxyavn1x.narinfo': HTTP error 500; retrying in 1137 ms
warning: error: unable to download 'https://sellout.cachix.org/a401jxcqazmbsry2247qxy1byxyavn1x.narinfo': HTTP error 500; retrying in 2418 ms
error:
       … while calling the 'derivationStrict' builtin
         at <nix/derivation-internal.nix>:37:12:
           36|
           37|   strict = derivationStrict drvAttrs;
             |            ^
           38|

       … while evaluating derivation 'nix-shell'
         whose name attribute is located at /nix/store/iq64msz8gfknflqjrma5hja024rnq3ik-source/pkgs/stdenv/generic/make-derivation.nix:480:13

       … while evaluating attribute 'inputsFrom' of derivation 'nix-shell'
         at /nix/store/dyrks1v34pwbw8vbb76vxr0q32w3vgdm-source/nix/lib/default.nix:16:7:
           15|     (old: {
           16|       inputsFrom =
             |       ^
           17|         old.inputsFrom

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: unable to download 'https://sellout.cachix.org/a401jxcqazmbsry2247qxy1byxyavn1x.narinfo': HTTP error 500