[BUG] Illegal instruction - CPU lacks AVX support (Linux)

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

The latest version of Claude can’t run on my old CPU. It shows:
CPU lacks AVX support. Please consider upgrading to a newer CPU.

It was working fine on v2.1.34.

What Should Happen?

it should not crash

Error Messages/Logs

claude --version
============================================================
Bun Canary v1.3.9-canary.51 (d5628db2) Linux x64 (baseline)
Linux Kernel v5.4.0 | glibc v2.31
Args: "claude" "--version"
Features: jsc no_avx2 no_avx standalone_executable 
Builtins: "bun:main" 
Elapsed: 14548ms | User: 7548ms | Sys: 7000ms
RSS: 14.45GB | Peak: 5.24GB | Commit: 14.45GB | Faults: 0 | Machine: 65.85GB

CPU lacks AVX support. Please consider upgrading to a newer CPU.
panic(main thread): Segmentation fault at address 0x5D6E7800000
oh no: Bun has crashed. This indicates a bug in Bun, not your code.

To send a redacted crash report to Bun's team,
please file a GitHub issue using the link below:

 https://bun.report/1.3.9/B_2d5628dbEggggigD4skkwE+o4Qgpjt9Cstg4pDkgt2pD+2+k1Di1jhmE0os1sEwj6vtF_6muvhE6muvhE6muvhE6muvhE6muvhE6muvhE6muvhE6muvhE6muvhE6muvhEA2s9ChgggwY

Illegal instruction (core dumped)

Steps to Reproduce

Run any claude command

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

2.1.34

Claude Code Version

2.1.37

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

Warp

Additional Information

_No response_