[BUG] New Claude Code version crashes

[pidir048-beep]

Environment

• Device: Honor X7d 4G
• Android version: Android 15
• Architecture: aarch64
• Kernel version: 5.15.180-android13-8-00018-g9b2308ac0ad6-ab14563692
• Termux source: F-Droid
• Install path: Native Termux
• Launch command used: claude
• Node.js version: v24.15.0
• Claude Code version: 2.1.181 (Claude Code)

Steps to Reproduce

Expected Behavior

For Claude CLI to launch normally

Actual Behavior

Just crashes.

Error Output

~/test $ claude
============================================================
Bun v1.4.0 (324c5f012) Linux arm64                    Linux Kernel v5.15.180 | glibc v2.42-0
CPU: neon fp aes crc32
Args: "/data/data/com.termux/files/home/.local/share/claude/versions/2.1.181"                               Features: Bun.stderr(2) Bun.stdin(2) Bun.stdout(2) fetch jsc standalone_executable yaml_parse(2) claude_code
Builtins: "bun:main" "node:assert" "node:async_hooks" "node:buffer" "node:child_process" "node:crypto" "node:dns" "node:events" "node:fs" "node:fs/promises" "node:http" "node:http2" "node:https" "node:module" "node:net" "node:os" "node:path" "node:path/posix" "node:path/win32" "node:perf_hooks" "node:process" "node:readline" "node:stream" "node:stream/consumers" "node:stream/promises" "node:string_decoder" "node:timers/promises" "node:tls" "node:tty" "node:url" "node:util" "node:vm" "node:zlib"

Elapsed: 605ms | User: 621ms | Sys: 156ms
RSS: 41.1 MB | Peak: 0.29 GB | Commit: 41.1 MB | Faults: 3 | Machine: 8.0 GB

panic: Segmentation fault at address 0x0
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/1.4.0/L_1324c5f0kgggkEugogC2pl8Buxz0uCm12//C+00//C2pl9kCmxy8kCu6x8kC+q275B+ytiB2568BA2AA

Trap                       claude
~/test $

Additional Context

Just was using Claude CLI normally, relaunched it, wrapper (from native termux install approach) found a new version and downloaded it, patched it and then it started to crash. Also, heres the stacktrace:

 Bun v1.4.0 ([`324c5f0`](<https://github.com/oven-sh/bun/tree/324c5f012a5fa29c1b6dcbe59ae4f8fd0475c7a8>)) on linux aarch64 [StandaloneExecutable]

Segmentation fault at address 0x00000000

- `??`
- [`linux.rs:38`](<https://github.com/oven-sh/bun/blob/324c5f012a5fa29c1b6dcbe59ae4f8fd0475c7a8/src/platform/linux.rs#L38>): `sys_epoll_pwait2`
- [`epoll_kqueue.c:142`](<https://github.com/oven-sh/bun/blob/324c5f012a5fa29c1b6dcbe59ae4f8fd0475c7a8/packages/bun-usockets/src/eventing/epoll_kqueue.c#L142>): `bun_epoll_pwait2`
- [`epoll_kqueue.c:391`](<https://github.com/oven-sh/bun/blob/324c5f012a5fa29c1b6dcbe59ae4f8fd0475c7a8/packages/bun-usockets/src/eventing/epoll_kqueue.c#L391>): `us_loop_run_bun_tick`
- [`Loop.rs:249`](<https://github.com/oven-sh/bun/blob/324c5f012a5fa29c1b6dcbe59ae4f8fd0475c7a8/src/uws_sys/Loop.rs#L249>): `tick`
- [`HTTPThread.rs:1372`](<https://github.com/oven-sh/bun/blob/324c5f012a5fa29c1b6dcbe59ae4f8fd0475c7a8/src/http/HTTPThread.rs#L1372>): `<bun_http::http_thread::HttpThread>::process_events`
- [`HTTPThread.rs:1336`](<https://github.com/oven-sh/bun/blob/324c5f012a5fa29c1b6dcbe59ae4f8fd0475c7a8/src/http/HTTPThread.rs#L1336>): `on_start`
- [`HTTPThread.rs:1240`](<https://github.com/oven-sh/bun/blob/324c5f012a5fa29c1b6dcbe59ae4f8fd0475c7a8/src/http/HTTPThread.rs#L1240>): `{closure#0}`
- [`backtrace.rs:166`](<https://github.com/oven-sh/bun/blob/324c5f012a5fa29c1b6dcbe59ae4f8fd0475c7a8/src/rust/library/std/src/sys/backtrace.rs#L166>): `std::sys::backtrace::__rust_begin_short_backtrace::<bun_http::http_thread::_event_loop_draft::init_once::{closure#0}, (...)>`
- [`lifecycle.rs:70`](<https://github.com/oven-sh/bun/blob/324c5f012a5fa29c1b6dcbe59ae4f8fd0475c7a8/src/rust/library/std/src/thread/lifecycle.rs#L70>): `{closure#0}<bun_http::http_thread::_event_loop_draft::init_once::{closure_env#0}, (...)>`
- [`unwind_safe.rs:275`](<https://github.com/oven-sh/bun/blob/324c5f012a5fa29c1b6dcbe59ae4f8fd0475c7a8/src/rust/library/core/src/panic/unwind_safe.rs#L275>): `call_once<(), std::thread::lifecycle::spawn_unchecked::{closure#1}::{closure_env#0}<bun_http::http_thread::_event_loop_draft::init_once::{closure_env#0}, (...)>>`
- [`panicking.rs:581`](<https://github.com/oven-sh/bun/blob/324c5f012a5fa29c1b6dcbe59ae4f8fd0475c7a8/src/rust/library/std/src/panicking.rs#L581>): `do_call<core::panic::unwind_safe::AssertUnwindSafe<std::thread::lifecycle::spawn_unchecked::{closure#1}::{closure_env#0}<bun_http::http_thread::_event_loop_draft::init_once::{closure_env#0}, ()>>, (...)>`
- [`panicking.rs:544`](<https://github.com/oven-sh/bun/blob/324c5f012a5fa29c1b6dcbe59ae4f8fd0475c7a8/src/rust/library/std/src/panicking.rs#L544>): `catch_unwind<(), core::panic::unwind_safe::AssertUnwindSafe<std::thread::lifecycle::spawn_unchecked::{closure#1}::{closure_env#0}<bun_http::http_thread::_event_loop_draft::init_once::{closure_env#0}, (...)>>>`
- [`panic.rs:359`](<https://github.com/oven-sh/bun/blob/324c5f012a5fa29c1b6dcbe59ae4f8fd0475c7a8/src/rust/library/std/src/panic.rs#L359>): `catch_unwind<core::panic::unwind_safe::AssertUnwindSafe<std::thread::lifecycle::spawn_unchecked::{closure#1}::{closure_env#0}<bun_http::http_thread::_event_loop_draft::init_once::{closure_env#0}, ()>>, (...)>`
- [`lifecycle.rs:68`](<https://github.com/oven-sh/bun/blob/324c5f012a5fa29c1b6dcbe59ae4f8fd0475c7a8/src/rust/library/std/src/thread/lifecycle.rs#L68>): `{closure#1}<bun_http::http_thread::_event_loop_draft::init_once::{closure_env#0}, (...)>`
- [`function.rs:250`](<https://github.com/oven-sh/bun/blob/324c5f012a5fa29c1b6dcbe59ae4f8fd0475c7a8/src/rust/library/core/src/ops/function.rs#L250>): `<std::thread::lifecycle::spawn_unchecked<bun_http::http_thread::_event_loop_draft::init_once::{closure#0}, ()>::{closure#1} as core::ops::function::FnOnce<(...)>>::call_once::{shim:vtable#0}`
- [`boxed.rs:2275`](<https://github.com/oven-sh/bun/blob/324c5f012a5fa29c1b6dcbe59ae4f8fd0475c7a8/src/rust/library/alloc/src/boxed.rs#L2275>): `call_once<(), (...), alloc::alloc::Global>`
- [`unix.rs:118`](<https://github.com/oven-sh/bun/blob/324c5f012a5fa29c1b6dcbe59ae4f8fd0475c7a8/src/rust/library/std/src/sys/thread/unix.rs#L118>): `<std::sys::thread::unix::Thread>::new::thread_start`

Features: spawn, standalone\_executable, yaml\_parse, claude\_code, Bun.stderr, Bun.stdin, Bun.stdout, fetch, jsc

[ferrumclaudepilgrim]

Yup. Its the new bun 1.4 (that is unreleased publicly it appears) I am actively working it as we speak. I am about to push a hotfix/ patch that will pin Claude Code to 2.1.176 I am testing now.
2.1.181 pushed a new bun giving us a regression

[ferrumclaudepilgrim]

I just pushed an update. Re-running install.sh (steps here) refreshes the launcher in place.

The launcher now launch-tests each Claude Code version on your device and rolls back from one that crashes, so it won't strand you on 2.1.181. I'm following the Bun fix in PR #32490 closely and will note here when a working release lands.

[pidir048-beep]

Update on situation: When i received update to version 2.1.191 this error somehow fixed itself and now 2.1.191 claude code launches cleanly.