Panic in custom asynchronous protocol when sending response

**Problem**

I've got an asynchronous_custom_protocol for loading some assets like images etc, but if not present, downloading them from certain locations first. I'm not sure why, or for what requests, but semi-regularly, it will panic inside `responder.respond`. I'm not sure why or how to really debug this, except for digging through the stream of request to find the failure. Because it's all async, logs aren't really lining up that well at the moment.

Is this a more common issue, or a certain gotcha like response sizes that I am missing?

```
with_asynchronous_custom_protocol("my_protocol", handler::protocol_handler)
```

```
/// Create the asynchronous fifteen:// protocol handler
pub fn protocol_handler(
request: http::Request>,
responder: dioxus::desktop::RequestAsyncResponder,
) {
tokio::spawn(async move {
let response = match handle_request_inner(request).await {
Ok(response) => response,
Err(e) => {
warn!("Error handling protocol:// request: {}", e);
build_error_response(&e)
}
};
responder.respond(response);
});
}
```

```
en: thread 'tokio-runtime-worker' panicked at 'panic in a function that cannot unwind', library/core/src/panicking.rs:225:5

Backtrace:
0: std::backtrace_rs::backtrace::libunwind::trace
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
1: std::backtrace_rs::backtrace::trace_unsynchronized
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
2: std::backtrace::Backtrace::create
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/std/src/backtrace.rs:331:13
3: fifteen::main::{{closure}}
at ./bin/fifteen/src/main.rs:45:25
4: as core::ops::function::Fn>::call
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/alloc/src/boxed.rs:1980:9
5: std::panicking::rust_panic_with_hook
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/std/src/panicking.rs:841:13
6: std::panicking::begin_panic_handler::{{closure}}
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/std/src/panicking.rs:699:13
7: std::sys::backtrace::__rust_end_short_backtrace
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/std/src/sys/backtrace.rs:168:18
8: __rustc::rust_begin_unwind
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/std/src/panicking.rs:697:5
9: core::panicking::panic_nounwind_fmt::runtime
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/core/src/panicking.rs:117:22
10: core::panicking::panic_nounwind_fmt
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/core/src/intrinsics/mod.rs:3177:9
11: core::panicking::panic_nounwind
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/core/src/panicking.rs:225:5
12: core::panicking::panic_cannot_unwind
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/core/src/panicking.rs:330:5
13: objc_exception::try_no_ret::try_objc_execute_closure
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/objc_exception-0.1.2/src/lib.rs:30:5
14: RustObjCExceptionTryCatch
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/objc_exception-0.1.2/extern/exception.m:10:9
15: objc_exception::try_no_ret
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/objc_exception-0.1.2/src/lib.rs:44:19
16: objc_exception::try
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/objc_exception-0.1.2/src/lib.rs:67:9
17: objc::exception::try
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/objc-0.2.7/src/exception.rs:8:5
18: objc::message::platform::send_unverified
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/objc-0.2.7/src/message/mod.rs:12:9
19: objc::message::send_message
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/objc-0.2.7/src/message/mod.rs:178:5
20: objc::message::Message::send_message
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/objc-0.2.7/src/message/mod.rs:65:9
21: wry::wkwebview::InnerWebView::new_ns_view::start_task::{{closure}}::response
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/wry-0.45.0/src/wkwebview/mod.rs:323:24
22: wry::wkwebview::InnerWebView::new_ns_view::start_task::{{closure}}
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/wry-0.45.0/src/wkwebview/mod.rs:345:27
23: core::ops::function::FnOnce::call_once{{vtable.shim}}
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/ops/function.rs:250:5
24: as core::ops::function::FnOnce>::call_once
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/alloc/src/boxed.rs:1966:9
25: wry::RequestAsyncResponder::respond
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/wry-0.45.0/src/lib.rs:291:5
26: fifteen::asset_handler::fifteen_protocol_handler::{{closure}}
at ./bin/fifteen/src/asset_handler.rs:57:19
27: as core::future::future::Future>::poll
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/future/future.rs:124:9
28: tokio::runtime::task::core::Core::poll::{{closure}}
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/core.rs:365:24
29: tokio::loom::std::unsafe_cell::UnsafeCell::with_mut
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/loom/std/unsafe_cell.rs:16:9
30: tokio::runtime::task::core::Core::poll
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/core.rs:354:30
31: tokio::runtime::task::harness::poll_future::{{closure}}
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/harness.rs:535:30
32: as core::ops::function::FnOnce<()>>::call_once
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/panic/unwind_safe.rs:272:9
33: std::panicking::catch_unwind::do_call
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panicking.rs:589:40
34: ___rust_try
35: std::panicking::catch_unwind
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panicking.rs:552:19
36: std::panic::catch_unwind
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panic.rs:359:14
37: tokio::runtime::task::harness::poll_future
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/harness.rs:523:18
38: tokio::runtime::task::harness::Harness::poll_inner
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/harness.rs:210:27
39: tokio::runtime::task::harness::Harness::poll
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/harness.rs:155:20
40: tokio::runtime::task::raw::poll
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/raw.rs:325:13
41: tokio::runtime::task::raw::RawTask::poll
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/raw.rs:255:18
42: tokio::runtime::task::LocalNotified::run
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/mod.rs:509:13
43: tokio::runtime::scheduler::multi_thread::worker::Context::run_task::{{closure}}
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/scheduler/multi_thread/worker.rs:600:18
44: tokio::task::coop::with_budget
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/task/coop/mod.rs:167:5
45: tokio::task::coop::budget
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/task/coop/mod.rs:133:5
46: tokio::runtime::scheduler::multi_thread::worker::Context::run_task
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/scheduler/multi_thread/worker.rs:591:9
47: tokio::runtime::scheduler::multi_thread::worker::Context::run
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/scheduler/multi_thread/worker.rs:539:29
48: tokio::runtime::scheduler::multi_thread::worker::run::{{closure}}::{{closure}}
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/scheduler/multi_thread/worker.rs:504:24
49: tokio::runtime::context::scoped::Scoped::set
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/context/scoped.rs:40:9
50: tokio::runtime::context::set_scheduler::{{closure}}
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/context.rs:176:38
51: std::thread::local::LocalKey::try_with
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/thread/local.rs:315:12
52: std::thread::local::LocalKey::with
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/thread/local.rs:279:20
53: tokio::runtime::context::set_scheduler
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/context.rs:176:17
54: tokio::runtime::scheduler::multi_thread::worker::run::{{closure}}
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/scheduler/multi_thread/worker.rs:499:9
55: tokio::runtime::context::runtime::enter_runtime
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/context/runtime.rs:65:16
56: tokio::runtime::scheduler::multi_thread::worker::run
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/scheduler/multi_thread/worker.rs:491:5
57: tokio::runtime::scheduler::multi_thread::worker::Launch::launch::{{closure}}
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/scheduler/multi_thread/worker.rs:457:45
58: as core::future::future::Future>::poll
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/blocking/task.rs:42:21
59: tokio::runtime::task::core::Core::poll::{{closure}}
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/core.rs:365:24
60: tokio::loom::std::unsafe_cell::UnsafeCell::with_mut
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/loom/std/unsafe_cell.rs:16:9
61: tokio::runtime::task::core::Core::poll
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/core.rs:354:30
62: tokio::runtime::task::harness::poll_future::{{closure}}
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/harness.rs:535:30
63: as core::ops::function::FnOnce<()>>::call_once
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/panic/unwind_safe.rs:272:9
64: std::panicking::catch_unwind::do_call
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panicking.rs:589:40
65: ___rust_try
66: std::panicking::catch_unwind
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panicking.rs:552:19
67: std::panic::catch_unwind
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panic.rs:359:14
68: tokio::runtime::task::harness::poll_future
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/harness.rs:523:18
69: tokio::runtime::task::harness::Harness::poll_inner
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/harness.rs:210:27
70: tokio::runtime::task::harness::Harness::poll
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/harness.rs:155:20
71: tokio::runtime::task::raw::poll
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/raw.rs:325:13
72: tokio::runtime::task::raw::RawTask::poll
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/raw.rs:255:18
73: tokio::runtime::task::UnownedTask::run
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/mod.rs:546:13
74: tokio::runtime::blocking::pool::Task::run
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/blocking/pool.rs:161:19
75: tokio::runtime::blocking::pool::Inner::run
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/blocking/pool.rs:516:22
76: tokio::runtime::blocking::pool::Spawner::spawn_thread::{{closure}}
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/blocking/pool.rs:474:47
77: std::sys::backtrace::__rust_begin_short_backtrace
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/sys/backtrace.rs:152:18
78: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/thread/mod.rs:559:17
79: as core::ops::function::FnOnce<()>>::call_once
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/panic/unwind_safe.rs:272:9
80: std::panicking::catch_unwind::do_call
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panicking.rs:589:40
81: ___rust_try
82: std::panicking::catch_unwind
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panicking.rs:552:19
83: std::panic::catch_unwind
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panic.rs:359:14
84: std::thread::Builder::spawn_unchecked_::{{closure}}
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/thread/mod.rs:557:30
85: core::ops::function::FnOnce::call_once{{vtable.shim}}
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/ops/function.rs:250:5
86: as core::ops::function::FnOnce>::call_once
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/alloc/src/boxed.rs:1966:9
87: as core::ops::function::FnOnce>::call_once
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/alloc/src/boxed.rs:1966:9
88: std::sys::pal::unix::thread::Thread::new::thread_start
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/std/src/sys/pal/unix/thread.rs:97:17
89: __pthread_cond_wait

2025-07-14T20:13:12.763658Z ERROR fifteen: thread 'tokio-runtime-worker' panicked at 'panic in a function that cannot unwind', library/core/src/panicking.rs:225:5

Backtrace:
0: std::backtrace_rs::backtrace::libunwind::trace
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
1: std::backtrace_rs::backtrace::trace_unsynchronized
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
2: std::backtrace::Backtrace::create
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/std/src/backtrace.rs:331:13
3: fifteen::main::{{closure}}
at ./bin/fifteen/src/main.rs:45:25
4: as core::ops::function::Fn>::call
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/alloc/src/boxed.rs:1980:9
5: std::panicking::rust_panic_with_hook
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/std/src/panicking.rs:841:13
6: std::panicking::begin_panic_handler::{{closure}}
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/std/src/panicking.rs:699:13
7: std::sys::backtrace::__rust_end_short_backtrace
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/std/src/sys/backtrace.rs:168:18
8: __rustc::rust_begin_unwind
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/std/src/panicking.rs:697:5
9: core::panicking::panic_nounwind_fmt::runtime
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/core/src/panicking.rs:117:22
10: core::panicking::panic_nounwind_fmt
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/core/src/intrinsics/mod.rs:3177:9
11: core::panicking::panic_nounwind
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/core/src/panicking.rs:225:5
12: core::panicking::panic_cannot_unwind
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/core/src/panicking.rs:330:5
13: objc_exception::try_no_ret::try_objc_execute_closure
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/objc_exception-0.1.2/src/lib.rs:30:5
14: RustObjCExceptionTryCatch
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/objc_exception-0.1.2/extern/exception.m:10:9
15: objc_exception::try_no_ret
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/objc_exception-0.1.2/src/lib.rs:44:19
16: objc_exception::try
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/objc_exception-0.1.2/src/lib.rs:67:9
17: objc::exception::try
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/objc-0.2.7/src/exception.rs:8:5
18: objc::message::platform::send_unverified
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/objc-0.2.7/src/message/mod.rs:12:9
19: objc::message::send_message
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/objc-0.2.7/src/message/mod.rs:178:5
20: objc::message::Message::send_message
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/objc-0.2.7/src/message/mod.rs:65:9
21: wry::wkwebview::InnerWebView::new_ns_view::start_task::{{closure}}::response
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/wry-0.45.0/src/wkwebview/mod.rs:323:24
22: wry::wkwebview::InnerWebView::new_ns_view::start_task::{{closure}}
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/wry-0.45.0/src/wkwebview/mod.rs:345:27
23: core::ops::function::FnOnce::call_once{{vtable.shim}}
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/ops/function.rs:250:5
24: as core::ops::function::FnOnce>::call_once
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/alloc/src/boxed.rs:1966:9
25: wry::RequestAsyncResponder::respond
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/wry-0.45.0/src/lib.rs:291:5
26: fifteen::asset_handler::fifteen_protocol_handler::{{closure}}
at ./bin/fifteen/src/asset_handler.rs:57:19
27: as core::future::future::Future>::poll
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/future/future.rs:124:9
28: tokio::runtime::task::core::Core::poll::{{closure}}
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/core.rs:365:24
29: tokio::loom::std::unsafe_cell::UnsafeCell::with_mut
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/loom/std/unsafe_cell.rs:16:9
30: tokio::runtime::task::core::Core::poll
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/core.rs:354:30
31: tokio::runtime::task::harness::poll_future::{{closure}}
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/harness.rs:535:30
32: as core::ops::function::FnOnce<()>>::call_once
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/panic/unwind_safe.rs:272:9
33: std::panicking::catch_unwind::do_call
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panicking.rs:589:40
34: ___rust_try
35: std::panicking::catch_unwind
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panicking.rs:552:19
36: std::panic::catch_unwind
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panic.rs:359:14
37: tokio::runtime::task::harness::poll_future
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/harness.rs:523:18
38: tokio::runtime::task::harness::Harness::poll_inner
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/harness.rs:210:27
39: tokio::runtime::task::harness::Harness::poll
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/harness.rs:155:20
40: tokio::runtime::task::raw::poll
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/raw.rs:325:13
41: tokio::runtime::task::raw::RawTask::poll
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/raw.rs:255:18
42: tokio::runtime::task::LocalNotified::run
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/mod.rs:509:13
43: tokio::runtime::scheduler::multi_thread::worker::Context::run_task::{{closure}}
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/scheduler/multi_thread/worker.rs:600:18
44: tokio::task::coop::with_budget
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/task/coop/mod.rs:167:5
45: tokio::task::coop::budget
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/task/coop/mod.rs:133:5
46: tokio::runtime::scheduler::multi_thread::worker::Context::run_task
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/scheduler/multi_thread/worker.rs:591:9
47: tokio::runtime::scheduler::multi_thread::worker::Context::run
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/scheduler/multi_thread/worker.rs:539:29
48: tokio::runtime::scheduler::multi_thread::worker::run::{{closure}}::{{closure}}
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/scheduler/multi_thread/worker.rs:504:24
49: tokio::runtime::context::scoped::Scoped::set
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/context/scoped.rs:40:9
50: tokio::runtime::context::set_scheduler::{{closure}}
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/context.rs:176:38
51: std::thread::local::LocalKey::try_with
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/thread/local.rs:315:12
52: std::thread::local::LocalKey::with
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/thread/local.rs:279:20
53: tokio::runtime::context::set_scheduler
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/context.rs:176:17
54: tokio::runtime::scheduler::multi_thread::worker::run::{{closure}}
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/scheduler/multi_thread/worker.rs:499:9
55: tokio::runtime::context::runtime::enter_runtime
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/context/runtime.rs:65:16
56: tokio::runtime::scheduler::multi_thread::worker::run
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/scheduler/multi_thread/worker.rs:491:5
57: tokio::runtime::scheduler::multi_thread::worker::Launch::launch::{{closure}}
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/scheduler/multi_thread/worker.rs:457:45
58: as core::future::future::Future>::poll
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/blocking/task.rs:42:21
59: tokio::runtime::task::core::Core::poll::{{closure}}
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/core.rs:365:24
60: tokio::loom::std::unsafe_cell::UnsafeCell::with_mut
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/loom/std/unsafe_cell.rs:16:9
61: tokio::runtime::task::core::Core::poll
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/core.rs:354:30
62: tokio::runtime::task::harness::poll_future::{{closure}}
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/harness.rs:535:30
63: as core::ops::function::FnOnce<()>>::call_once
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/panic/unwind_safe.rs:272:9
64: std::panicking::catch_unwind::do_call
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panicking.rs:589:40
65: ___rust_try
66: std::panicking::catch_unwind
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panicking.rs:552:19
67: std::panic::catch_unwind
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panic.rs:359:14
68: tokio::runtime::task::harness::poll_future
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/harness.rs:523:18
69: tokio::runtime::task::harness::Harness::poll_inner
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/harness.rs:210:27
70: tokio::runtime::task::harness::Harness::poll
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/harness.rs:155:20
71: tokio::runtime::task::raw::poll
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/raw.rs:325:13
72: tokio::runtime::task::raw::RawTask::poll
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/raw.rs:255:18
73: tokio::runtime::task::UnownedTask::run
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/task/mod.rs:546:13
74: tokio::runtime::blocking::pool::Task::run
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/blocking/pool.rs:161:19
75: tokio::runtime::blocking::pool::Inner::run
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/blocking/pool.rs:516:22
76: tokio::runtime::blocking::pool::Spawner::spawn_thread::{{closure}}
at /Users/k/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.46.1/src/runtime/blocking/pool.rs:474:47
77: std::sys::backtrace::__rust_begin_short_backtrace
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/sys/backtrace.rs:152:18
78: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/thread/mod.rs:559:17
79: as core::ops::function::FnOnce<()>>::call_once
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/panic/unwind_safe.rs:272:9
80: std::panicking::catch_unwind::do_call
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panicking.rs:589:40
81: ___rust_try
82: std::panicking::catch_unwind
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panicking.rs:552:19
83: std::panic::catch_unwind
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panic.rs:359:14
84: std::thread::Builder::spawn_unchecked_::{{closure}}
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/thread/mod.rs:557:30
85: core::ops::function::FnOnce::call_once{{vtable.shim}}
at /Users/k/.rustup/toolchains/nightly-2025-06-01-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/ops/function.rs:250:5
86: as core::ops::function::FnOnce>::call_once
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/alloc/src/boxed.rs:1966:9
87: as core::ops::function::FnOnce>::call_once
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/alloc/src/boxed.rs:1966:9
88: std::sys::pal::unix::thread::Thread::new::thread_start
at /rustc/4d08223c054cf5a56d9761ca925fd46ffebe7115/library/std/src/sys/pal/unix/thread.rs:97:17
89: __pthread_cond_wait

thread caused non-unwinding panic. aborting.
thread caused non-unwinding panic. aborting.
```