"Claude Code process terminated by signal SIGILL" error on Linux, Thinkpad X230

[KiKaraage]

Specification

• Device: Lenovo 2325WUF (ThinkPad X230)
• Processor: Intel Core i5-3320M
• OS: Linux, Fedora 43
• Version: 0.4.1 via AppImage

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I can't use Craft Agents at all since it launched, due to failed Claude Code processes:

Screencast.From.2026-02-10.15-29-35.webm

[ClaudeAgent] INNER CATCH triggered: Claude Code process terminated by signal SIGILL
[title-generator] Failed to generate title: Error: Claude Code process terminated by signal SIGILL
    at XX.getProcessExitError (/tmp/.mount_Craft-UAeb7y/resources/app/dist/main.cjs:18938:28)
    at ChildProcess.$2 (/tmp/.mount_Craft-UAeb7y/resources/app/dist/main.cjs:19015:27)
    at Object.onceWrapper (node:events:634:26)
    at ChildProcess.emit (node:events:531:35)
    at ChildProcess._handle.onexit (node:internal/child_process:293:12)
[ClaudeAgent] INNER CATCH triggered: Claude Code process terminated by signal SIGILL

• Connection check & adding endpoints went properly on both Anthropic and OpenAI-compatible APIs.
• After debugging with another agent, I got the answer: this happens because it's an older laptop with no AVX2 support, and the Bun version used to spawn Claude Code (in the SDK) is the non-baseline version. (debugging_report.md)
• Jarred Sumner himself said using AVX2 is not a requirement to run Bun.
• Bun provide baseline versions for all platforms, and Craft Agents already uses the baseline version in the build script for Windows. There's no reason to not do the same for Linux, right? https://github.com/lukilabs/craft-agents-oss/blob/436820567432c61326574a822808c96a969c3a0d/apps/electron/scripts/build-win.ps1#L103-L115
• This will be solved by merging fix(electron): use Bun baseline ver for non-AVX2 compat on Linux #157

I hope the Craft team can fix this issue. Please 🙏

[rjulius23]

Looking at it.

[rjulius23]

Should be fixed.