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| == Known Issues == | | == Known Issues == |
| * hydra-queue-runner sometimes gets stuck even with builds are in the queue, and the builds are not scheduled. The issue is being tracked [https://github.com/NixOS/hydra/issues/366 here]. In the meantime, a workaround is to add a cron job that regularly restarts the hydra-queue-runner systemd service. Possible fix: [https://github.com/NixOS/hydra/commit/73ca325d1c0f7914640a63764c9a6d448fde5bd0]
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| * If you see <code>error: unexpected end-of-file</code> it can mean multiple things, some of them are:
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| # You have a miss-match between nix versions on the Hydra server and the builder
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| # It can also mean that <code>hydra-queue-runner</code> needs privileges on the build server. Reference: [https://github.com/NixOS/nix/issues/2789]
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| * The default timeout for git operations is 600 seconds [https://github.com/NixOS/hydra/issues/1181], which might cause fetches of large repositories like [https://github.com/NixOS/nixpkgs nixos/nixpkgs] to fail: <code>error fetching latest change from git repo at `https://github.com/nixos/nixpkgs': timeout</code>. The timeout can be increased with the following configuration.nix snippet:
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