Running baseline Bun build despite CPU supporting AVX2

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?

claude code crashes every time and each time is faster than the last

What Should Happen?

claude should run normally without crashing

Error Messages/Logs

Bun v1.3.11 (01210fb6) Windows x64 (baseline)
Windows v.win10_cu
CPU: sse42 avx avx2
Args: "C:\Users\PC\.local\bin\claude.exe"
Features: Bun.stderr Bun.stdin(2) Bun.stdout(3) abort_signal(4) fetch(25) jsc sp
awn(14) standalone_executable process_dlopen yaml_parse
Builtins: "bun:main" "node:assert" "node:async_hooks" "node:buffer" "node:child_
process" "node:constants" "node:crypto" "node:dns" "node:events" "node:fs" "node
:fs/promises" "node:http" "node:https" "node:module" "node:net" "node:os" "node:
path" "node:path/posix" "node:path/win32" "node:perf_hooks" "node:process" "node
:stream" "node:stream/consumers" "node:timers/promises" "node:tls" "node:tty" "n
ode:url" "node:util" "node:zlib" "undici" "ws"
Elapsed: 109397ms | User: 19453ms | Sys: 3953ms
RSS: 2.65GB | Peak: 2.65GB | Commit: 14.13GB | Faults: 851992 | Machine: 16.06GB

panic(thread 16780): Illegal instruction at address 0x7FF776B33C00
oh no: Bun has crashed. This indicates a bug in Bun, not your code.

Steps to Reproduce

this is a claude code issue as its building the wrong bun variant which my cpu doesnt support

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.75

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Other

Additional Information

_No response_