# Non-deterministic segfault (only triggered on GitHub Actions). Tips for debugging?

**URL:** https://discourse.julialang.org/t/non-deterministic-segfault-only-triggered-on-github-actions-tips-for-debugging/53367
**Category:** General Usage
**Tags:** bug, multithreading, github-actions
**Created:** [January 14, 2021, 11:29pm UTC](https://discourse.julialang.org/t/non-deterministic-segfault-only-triggered-on-github-actions-tips-for-debugging/53367 "2021-01-14T23:29:36Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![giordano](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/giordano/32/2166_2.png) [@giordano](https://discourse.julialang.org/u/giordano)
#### Post date: [January 14, 2021, 11:36pm UTC](https://discourse.julialang.org/t/non-deterministic-segfault-only-triggered-on-github-actions-tips-for-debugging/53367/2 "2021-01-14T23:36:21Z")

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Tip to debug something on GitHub Actions: [GitHub - mxschmitt/action-tmate: Debug your GitHub Actions via SSH by using tmate to get access to the runner system itself.](https://github.com/mxschmitt/action-tmate)

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