90%
Credible

Zig quits GitHub, gripes about Microsoft's AI obsession • The Register

Thomas Claburn
Thomas Claburn
@Thomas Claburn

90% credible (95% factual, 79% presentation). The article accurately reports the Zig Software Foundation's migration from GitHub to Codeberg due to unresolved bugs and GitHub's AI focus, supported by official statements and issue threads. However, the presentation omits GitHub's overall scale and user base, introducing a framing violation that slightly undermines the neutrality of the narrative.

95%
Factual claims accuracy
79%
Presentation quality

Analysis Summary

The Zig Software Foundation has migrated its repository from GitHub to Codeberg, criticizing Microsoft's focus on AI at the expense of core engineering maintenance. A key issue was a persistent bug in GitHub Actions' 'safe_sleep.sh' script that caused indefinite CPU hangs, unresolved for months despite reports. This move underscores broader developer frustrations with GitHub's declining reliability and AI prioritization.

Original Content

Factual
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[![](https://www.theregister.com/design_picker/ae01b183a707a7db8cd5f2c947715ed56d335138/graphics/std/user_icon_white_extents_16x16.png)![](https://www.theregister.com/design_picker/ae01b183a707a7db8cd5f2c947715ed56d335138/graphics/std/user_icon_white_filled_extents_16x16.png)Sign in / up](https://account.theregister.com/login?r=https%3A//www.theregister.com/2025/12/02/zig_quits_github_microsoft_ai_obsession/ "Sign in / up") [The Register](https://www.theregister.com/) [![](https://www.theregister.com/design_picker/ae01b183a707a7db8cd5f2c947715ed56d335138/graphics/std/magnifying_glass_white_extents_16x16.png)](https://search.theregister.com/) ![](https://www.theregister.com/design_picker/ae01b183a707a7db8cd5f2c947715ed56d335138/graphics/icon/burger_menu_white_16x16.png)![](https://www.theregister.com/design_picker/ae01b183a707a7db8cd5f2c947715ed56d335138/graphics/icon/burger_menu_white_close_16x16.png) ## Topics [Special Features](https://www.theregister.com/2025/12/02/zig_quits_github_microsoft_ai_obsession/#subnav-box-nav-special_features) ## Special Features ## Vendor Voice [Resources](https://www.theregister.com/2025/12/02/zig_quits_github_microsoft_ai_obsession/#subnav-box-nav-resources) ## Resources #### [Devops](https://www.theregister.com/software/devops/) [**32**![comment bubble on white](https://www.theregister.com/design_picker/f5daacc84b9722c1e31ba85f836c37e4ad993fc4/graphics/icons/bubble_comment_white.png)](https://forums.theregister.com/forum/all/2025/12/02/zig_quits_github_microsoft_ai_obsession/ "View comments on this article") # Zig quits GitHub, says Microsoft's AI obsession has ruined the service [**32**![comment bubble on white](https://www.theregister.com/design_picker/f5daacc84b9722c1e31ba85f836c37e4ad993fc4/graphics/icons/bubble_comment_white.png)](https://forums.theregister.com/forum/all/2025/12/02/zig_quits_github_microsoft_ai_obsession/ "View comments on this article") ## Zig prez complains about 'vibe-scheduling' after safe sleep bug goes unaddressed for eons ![icon](https://www.theregister.com/design_picker/d518b499f8a6e2c65d4d8c49aca8299d54b03012/graphics/icon/vulture_red.svg)[Thomas Claburn](https://www.theregister.com/Author/Thomas-Claburn "Read more by this author") Tue 2 Dec 2025 // 01:12 UTC ![](https://www.theregister.com/design_picker/d2e337b97204af4aa34dda04c4e5d56d954b216f/graphics/icons/social_share_icon.svg) The Foundation that promotes the Zig programming language has quit GitHub due to what its leadership perceives as the code sharing site's decline. The drama began in April 2025 when GitHub user AlekseiNikiforovIBM started a [thread](https://github.com/actions/runner/issues/3792) titled “safe\_sleep.sh rarely hangs indefinitely.” GitHub addGitHub addGitHub addressed the problem in August, but didn’t reveal that in the thread, which remained open until Monday. > The code uses 100 percent CPU all the time, and will run forever That timing appears notable. Last week, Andrew Kelly, president and lead developer of the Zig Software Foundation, [announced](https://ziglang.org/news/migrating-from-github-to-codeberg/) that the Zig project is moving to Codeberg, a non-profit git hosting service, because GitHub no longer demonstrates commitment to engineering excellence. One piece of evidence he offered for that assessment was the “safe\_sleep.sh rarely hangs indefinitely” thread. "Most importantly, Actions has [inexcusable bugs](https://github.com/actions/runner/issues/3792#issuecomment-3182746514) while being [completely neglected](https://github.com/actions/runner/issues/385)," Kelly wrote. "After the [CEO of GitHub said to 'embrace AI or get out'](https://www.businessinsider.com/github-ceo-developers-embrace-ai-or-get-out-2025-8), it seems the lackeys at Microsoft took the hint, because GitHub Actions started 'vibe-scheduling' – choosing jobs to run seemingly at random. Combined with other bugs and inability to manually intervene, this causes our CI system to get so backed up that not even master branch commits get checked." ### Older and deeper Kelly’s gripe seems justified, as the bug discussed in the thread appears to have poKelly’s gripe seems justified, as the bug discussed in the thread appears to have poKelly’s gripe seems justified, as the bug discussed in the thread appears to have popped up following [a code change](https://github.com/actions/runner/pull/1707/commits/4135bc20763f93a8a1cb9375af6a5333142abc16) in February 2022 that users flagged in prior bug reports. The code change replaced instances of the posix "sleep" command with a "safe\_sleep" script that failed to work as advertised. It was supposed to allow the GitHub Actions runner – the application that runs a job from a GitHub Actions workflow – to pause execution safely. "The bug in this 'safe sleep' script is obvious from looking at it: if the process is not scheduled for the one-second interval in which the loop would return (due to $SECONDS having the correct value), then it simply spins forever,"the correct value), then it simply spins forever,"the correct value), then it simply spins forever," wrote Zig core developer Matthew Lugg in [a comment](https://github.com/actions/runner/issues/3792#issuecomment-3182746514) appended to the April bug thread. "That can easily happen on a CI machine under extreme load. When this happens, it's pretty bad: it completely breaks a runner until manual intervention. On Zig's CI runner machines, we observed multiple of these processes which had been running for hundreds of hours, silently taking down two runner services for weeks."h had been running for hundreds of hours, silently taking down two runner services for weeks."h had been running for hundreds of hours, silently taking down two runner services for weeks." The fix was [merged](https://github.com/actions/runner/pull/3157#event-19252199948) on August 20, 2025, from a separate issue opened from a separate issue opened from a separate issue opened back in February 2024. The related bug report from April 2025 remained open [until Monday, December 1, 2025](https://github.com/actions/runner/issues/3792#issuecomment-3597495291). A separate CPU usage bug [remains unresolved](https://github.com/actions/runner/pull/3143). - [Microsoft appears to move on from its most loyal 'customers' – Contoso and Fabrikam](https://www.theregister.com/2025/12/01/microsoft_contoso_fabrikam_zava/) - [UK gov blames budget leak on misconfigured WordPress plugin, server](https://www.theregister.com/2025/12/01/uk_budget_leak_blamed_on/) - [Google Antigravity vibe-codes user's entire drive out of existence](https://www.theregister.com/2025/12/01/google_antigravity_wipes_d_drive/) - [OpenAI cuts off Mixpanel after analytics leak exposes API users](https://www.theregister.com/2025/11/27/openai_mixpanel_api/) Jeremy Howard, co-founder of Answer.AI and Fast.AI, said in a series of social media [posts](https://x.com/jeremyphoward/status/1994532591685570942?s=20) that users’ claims about GitHub Actions being in a poor state of repair appear to be justified. "The bug," [he wrote](https://x.com/jeremyphoward/status/1994532596257362326?s=20), "was implemented in a way that, very obviously to nearly anyone at first glance, uses 100 percent CPU all the time, and will run forever unless the task happens to check the time during the correct second." > I can't see how such an extraorI can't see how such an extraorI can't see how such an extraordinary collection of outright face-palming events could be made He [added](https://x.com/jeremyphoward/status/1994532598404845901?s=20) that the platform-independent fix for the CPU issue proposed last February lingered for a year without review and was [closed](https://github.com/actions/runner/pull/3157#event-16646534098) by the GitHub bot in March 2025 before being revived and merged. "Whilst one could say that this is just one isolated incident, I can't see how such an extraordinary collection of outright face-palming events could be made in any reasonably functioning organization," Howard [concluded](https://x.com/jeremyphoward/status/1994532608290820180?s=20). GitHub did not immediately respond to a request for comment. While Kelly has gone on to [apologize](https://ziggit.dev/t/migrating-from-github-to-codeberg-zig-programming-language/13234/53) for the incendiary nature of his post, Zig is not the only software project publicly parting ways with GitHub. Over the weekend, Rodrigo Arias Mallo, creator of the Dillo browser project, [said](https://dillo-browser.org/news/migration-from-github/) he's planning to move away from GitHub owing to concerns about over-reliance on JavaScript, GitHub's ability to deny service, declining usability, inadequate moderation tools, and "over-focusing on LLMs and generative AI, which are destroying the open web (or what remains of it) among [other problems](https://en.wikipedia.org/wiki/Generative_artificial_intelligence#Concerns)." Codeberg, for its part, has doubled its supporting membership since January, going from [more than 600 members](https://blog.codeberg.org/letter-from-codeberg-looking-into-2025.html) to [over 1,200](https://blog.codeberg.org/letter-from-codeberg-onwards-and-upwards.html) as of last week. GitHub has not disclosed how many of its users pay for its services presently. The code hosting biz had "over 1.3 million paid GitHub Copilot subscribers, up 30 percent quarter-over-quarter," Microsoft CEO Satya Nadella said on the company's [Q2 2024 earnings call](https://www.microsoft.com/en-us/investor/events/fy-2024/earnings-fy-2024-q2). In Q4 2024, when GitHub reported [an annual revenue run rate of $2 billion](https://www.microsoft.com/en-us/investor/events/fy-2024/earnings-fy-2024-q4), GitHub Copilot subscriptions accounted for about 40 percent of the company's annual revenue growth. Nadella offered a different figure during Microsoft's [Q3 2025 earnings call](https://www.microsoft.com/en-us/investor/events/fy-2025/earnings-fy-2025-q3): "we now have over 15 million GitHub Copilot users, up over 4X year-over-year." It's not clear how many GitHub users pay for Copilot, or for runner scripts that burned CPU cycles when they should have been sleeping. ® [Sponsored: Generative AI on Google Cloud. 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The Facts

The article accurately reports on the Zig migration announcement, the specific GitHub Actions bug, and related developer criticisms, corroborated by official Zig statements and GitHub issue threads. It includes quotes from key figures and notes GitHub's lack of response, presenting a balanced view of the controversy. Verdict: Highly Accurate

Benefit of the Doubt

The article advances a narrative of corporate neglect in favor of AI hype, portraying GitHub/Microsoft as prioritizing revenue-generating AI tools like Copilot over essential infrastructure maintenance, thereby alienating open-source developers. It emphasizes technical details of the bug and developer frustrations to build sympathy for Zig's decision, while omitting deeper analysis of GitHub's internal challenges or potential benefits of AI integration, such as improved productivity for some users. This selective framing shapes reader perception towards viewing the migration as a justified rebellion against 'declining excellence,' potentially downplaying GitHub's overall market dominance and user base satisfaction.

How Is This Framed?

Biases, omissions, and misleading presentation techniques detected

mediumcausal: false causation

Implies direct causation between GitHub's AI emphasis and neglect of bugs like 'vibe-scheduling' and safe_sleep hangs, based on timing rather than proven links.

Problematic phrases:

"after the CEO of GitHub said to 'embrace AI or get out', it seems the lackeys at Microsoft took the hint""because GitHub Actions started 'vibe-scheduling'"

What's actually there:

Correlational timing, no direct evidence of resource diversion causing bugs

What's implied:

AI focus directly caused engineering neglect

Impact: Leads readers to attribute service decline solely to AI prioritization, fostering anti-Microsoft sentiment without considering other factors like scale or competing priorities.

highomission: missing context

Omits GitHub's overall scale (e.g., millions of users, 15M Copilot users) and potential benefits of AI tools, framing the bug as symptomatic of total ruin rather than an isolated issue in a vast platform.

Problematic phrases:

"Microsoft's AI obsession has ruined the service""GitHub no longer demonstrates commitment to engineering excellence"

What's actually there:

GitHub remains dominant with growing paid services; bug affected specific CI runners but not core platform for most users

What's implied:

Service is broadly unreliable and declining due to AI

Impact: Readers perceive GitHub as fundamentally broken, encouraging sympathy for migrations without balanced view of its strengths and widespread adoption.

mediumomission: unreported counter evidence

Fails to report counterpoints like GitHub's eventual bug fixes (e.g., merged August 2025) or developer apologies (Kelly's), and ignores broader context of open-source hosting alternatives' limitations.

Problematic phrases:

"bug goes unaddressed for eons""remains unresolved"

What's actually there:

Some issues fixed; Kelly later apologized for tone

What's implied:

Ongoing total neglect without resolution

Impact: Exaggerates persistence of problems, making the narrative of 'decline' more compelling and urgent, while downplaying GitHub's responsiveness.

lowsequence: single instance as trend

Presents Zig's migration and one bug as indicative of a broader trend of projects leaving GitHub, without quantifying how representative it is.

Problematic phrases:

"Zig is not the only software project publicly parting ways with GitHub""Codeberg has doubled its supporting membership"

What's actually there:

Few named examples; Codeberg growth from 600 to 1200 members is small vs GitHub's millions

What's implied:

Widespread exodus due to AI focus

Impact: Creates illusion of a mounting wave of dissatisfaction, amplifying perceived crisis in GitHub's viability.

Sources & References

External sources consulted for this analysis

1

https://www.theregister.com/2025/12/02/zig_quits_github_microsoft_ai_obsession/

2

https://ziglang.org/news/migrating-from-github-to-codeberg/

3

https://winbuzzer.com/2025/12/02/zig-quits-github-citing-rotted-culture-and-microsofts-ai-obsession-xcxwbn/

4

https://www.reddit.com/r/Zig/comments/1p7uom4/the_zig_language_repository_is_migrating_from/

5

https://devclass.com/2025/11/27/zig-project-ditches-github-for-codeberg-but-move-could-be-costly/

6

https://www.thestack.technology/zig-dumps-github/

7

https://news.ycombinator.com/item?id=46064571

8

https://winbuzzer.com/2025/12/02/zig-quits-github-citing-rotted-culture-and-microsofts-ai-obsession-xcxwbn/

9

https://swikblog.com/why-zig-quit-github-full-story-codeberg-move/

10

https://www.howtogeek.com/this-programming-language-is-quitting-github/

11

https://www.theregister.com/2025/12/02/zig_quits_github_microsoft_ai_obsession/

12

https://windowsforum.com/threads/zig-migrates-from-github-to-codeberg-amid-ci-concerns-and-ai-backlash.391770/

13

https://theoutpost.ai/news-story/zig-programming-language-quits-git-hub-blames-microsoft-s-ai-obsession-and-crumbling-infrastructure-22089/

14

https://biztoc.com/x/c109e6754aed224d

15

https://x.com/jeremyphoward/status/1822165114608615717

16

https://x.com/jeremyphoward/status/1830015213460181035

17

https://x.com/jeremyphoward/status/1417331228752023554

18

https://x.com/jeremyphoward/status/1089495485713272832

19

https://x.com/jeremyphoward/status/1562954245925924868

20

https://x.com/jeremyphoward/status/1144764804155883520

21

https://ziglang.org/news/migrating-from-github-to-codeberg/

22

https://lobste.rs/s/tvkddz/migrating_zig_organization_from_github

23

https://www.theregister.com/2025/12/02/zig_quits_github_microsoft_ai_obsession/

24

https://www.reddit.com/r/programming/comments/1p7up3u/the_zig_language_repository_is_migrating_from/

25

https://www.techzine.eu/news/devops/136914/zig-project-leaves-github-due-to-excessive-ai/

26

https://winbuzzer.com/2025/12/02/zig-quits-github-citing-rotted-culture-and-microsofts-ai-obsession-xcxwbn/

27

https://tech.yahoo.com/ai/copilot/articles/programming-language-quitting-github-184437625.html

28

https://www.howtogeek.com/this-programming-language-is-quitting-github/

29

https://winbuzzer.com/2025/12/02/zig-quits-github-citing-rotted-culture-and-microsofts-ai-obsession-xcxwbn/

30

https://www.heise.de/en/news/Zig-turns-its-back-on-GitHub-Frustration-over-Actions-and-Microsoft-s-AI-course-11100039.html

31

https://swikblog.com/why-zig-quit-github-full-story-codeberg-move/

32

https://www.techfinitive.com/goodbye-github-zig-developer-ditches-sinking-ship-over-microsofts-ai/

33

https://windowsforum.com/threads/zig-migrates-from-github-to-codeberg-amid-ci-concerns-and-ai-backlash.391770/

34

https://theoutpost.ai/news-story/zig-programming-language-quits-git-hub-blames-microsoft-s-ai-obsession-and-crumbling-infrastructure-22089/

35

https://x.com/zacbowden/status/1770132194997997823

36

https://x.com/KirkDBorne/status/896927591835283456

37

https://x.com/kimmonismus/status/1977298707940016250

38

https://x.com/KirkDBorne/status/906859665753088001

39

https://x.com/ibamarief/status/1726512526790385881

40

https://x.com/asteris_ai/status/1995817207935217941

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Facts
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Predictions