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update(ruby troubleshooting): add info about the Cloudflare JS challenge causing tests to hang #237

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ArturT merged 1 commit into from
Aug 6, 2025
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update(ruby troubleshooting): add info about the Cloudflare JS challenge causing tests to hang #237

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2 changes: 2 additions & 0 deletions docusaurus/docs/ruby/troubleshooting.mdx
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Expand Up @@ -90,6 +90,8 @@ Some users reported frozen CI nodes with:

- Recursive loop in the code base. Check if you have hidden loops that could happen when an exception happens. For example, investigate nested `rescue` blocks. You can use the following [backtrace debugging suggestions](troubleshooting.mdx#why-does-the-ci-node-hang-backtrace-debugging) to find it.

- Cloudflare JS challenge blocking external requests during tests if your CI runs from outside the allowed regions.

### Why does the CI node hang? (backtrace debugging)

Knapsack Pro would print Ruby threads to the output when tests freeze and CI node timeouts (the Ruby process is killed by a CI provider).
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