Repository: deno
Issue: websocket_server_multi_field_connection_header is flaky
Labels: flaky

```
---- integration::run::websocket_server_multi_field_connection_header stdout ----
thread 'integration::run::websocket_server_multi_field_connection_header' panicked at 'assertion failed: `(left == right)`
  left: `0`,
 right: `5`', cli\tests\integration\run_tests.rs:[3609](https://github.com/denoland/deno/actions/runs/3919594286/jobs/6700692268#step:37:3610):3
stack backtrace:
   0:     0x7ff670553511 - std::backtrace_rs::backtrace::dbghelp::trace
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\..\..\backtrace\src\backtrace\dbghelp.rs:98
   1:     0x7ff670553511 - std::backtrace_rs::backtrace::trace_unsynchronized
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\..\..\backtrace\src\backtrace\mod.rs:66
   2:     0x7ff670553511 - std::sys_common::backtrace::_print_fmt
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\sys_common\backtrace.rs:65
   3:     0x7ff670553511 - std::sys_common::backtrace::_print::impl$0::fmt
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\sys_common\backtrace.rs:44
   4:     0x7ff6703beaeb - core::fmt::write
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\core\src\fmt\mod.rs:1209
   5:     0x7ff67054091a - std::io::Write::write_fmt<alloc::vec::Vec<u8,alloc::alloc::Global> >
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\io\mod.rs:1682
   6:     0x7ff670557f6b - std::sys_common::backtrace::_print
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\sys_common\backtrace.rs:47
   7:     0x7ff670557f6b - std::sys_common::backtrace::print
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\sys_common\backtrace.rs:34
   8:     0x7ff670557b51 - std::panicking::default_hook::closure$1
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\panicking.rs:267
   9:     0x7ff6705576e3 - std::panicking::default_hook
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\panicking.rs:283
  10:     0x7ff6705587c8 - alloc::boxed::impl$47::call
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\alloc\src\boxed.rs:2001
  11:     0x7ff6705587c8 - std::panicking::rust_panic_with_hook
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\panicking.rs:692
  12:     0x7ff670558535 - std::panicking::begin_panic_handler::closure$0
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\panicking.rs:579
  13:     0x7ff67055847f - std::sys_common::backtrace::__rust_end_short_backtrace<std::panicking::begin_panic_handler::closure_env$0,never$>
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\sys_common\backtrace.rs:137
  14:     0x7ff670558454 - std::panicking::begin_panic_handler
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\panicking.rs:575
  15:     0x7ff6713feb15 - core::panicking::panic_fmt
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\core\src\panicking.rs:65
  16:     0x7ff6703be8af - core::fmt::Arguments::new_v1
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\core\src\fmt\mod.rs:398
  17:     0x7ff6703be8af - core::panicking::assert_failed_inner
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\core\src\panicking.rs:240
  18:     0x7ff671407246 - hashbrown::raw::RawTable::reserve_rehash<tuple$<alloc::string::String,alloc::vec::Vec<u8,alloc::alloc::Global> >,alloc::alloc::Global,hashbrown::map::make_hasher::closure_env$0<alloc::string::String,alloc::string::String,alloc::vec::Vec<u8,alloc::alloc::G
  19:     0x7ff670259bf2 - __ImageBase
  20:     0x7ff67057a78f - core::ops::function::FnOnce::call_once
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943\library\core\src\ops\function.rs:251
  21:     0x7ff67057a78f - test::__rust_begin_short_backtrace<enum2$<core::result::Result<tuple$<>,alloc::string::String> >,enum2$<core::result::Result<tuple$<>,alloc::string::String> > (*)()>
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\test\src\lib.rs:599
  22:     0x7ff67057a770 - test::run_test::closure$1
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\test\src\lib.rs:590
  23:     0x7ff67057a770 - core::ops::function::FnOnce::call_once<test::run_test::closure_env$1,tuple$<> >
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\core\src\ops\function.rs:251
  24:     0x7ff67057af41 - alloc::boxed::impl$45::call_once
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\alloc\src\boxed.rs:1987
  25:     0x7ff67057af41 - core::panic::unwind_safe::impl$23::call_once
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\core\src\panic\unwind_safe.rs:271
  26:     0x7ff67057af41 - std::panicking::try::do_call
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\panicking.rs:483
  27:     0x7ff67057af41 - std::panicking::try
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\panicking.rs:447
  28:     0x7ff67057af41 - std::panic::catch_unwind
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\panic.rs:137
  29:     0x7ff67057af41 - test::run_test_in_process
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\test\src\lib.rs:622
  30:     0x7ff67057af41 - test::run_test::run_test_inner::closure$0
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\test\src\lib.rs:516
  31:     0x7ff67057cd41 - test::run_test::run_test_inner::closure$1
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\test\src\lib.rs:543
  32:     0x7ff67057cd41 - std::sys_common::backtrace::__rust_begin_short_backtrace<test::run_test::run_test_inner::closure_env$1,tuple$<> >
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\sys_common\backtrace.rs:121
  33:     0x7ff67057ca3a - std::thread::impl$0::spawn_unchecked_::closure$1::closure$0
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\thread\mod.rs:551
  34:     0x7ff67057ca3a - core::panic::unwind_safe::impl$23::call_once
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\core\src\panic\unwind_safe.rs:271
  35:     0x7ff67057ca3a - std::panicking::try::do_call
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\panicking.rs:483
  36:     0x7ff67057ca3a - std::panicking::try
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\panicking.rs:447
  37:     0x7ff67057ca3a - std::panic::catch_unwind
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\panic.rs:137
  38:     0x7ff67057ca3a - std::thread::impl$0::spawn_unchecked_::closure$1
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\thread\mod.rs:550
  39:     0x7ff67057ca3a - core::ops::function::FnOnce::call_once<std::thread::impl$0::spawn_unchecked_::closure_env$1<test::run_test::run_test_inner::closure_env$1,tuple$<> >,tuple$<> >
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\core\src\ops\function.rs:251
  40:     0x7ff67054e7eb - alloc::boxed::impl$45::call_once
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\alloc\src\boxed.rs:1987
  41:     0x7ff67054e7eb - alloc::boxed::impl$45::call_once
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\alloc\src\boxed.rs:1987
  42:     0x7ff67054e7eb - std::sys::windows::thread::impl$0::new::thread_start
                               at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library\std\src\sys\windows\thread.rs:56
  43:     0x7fff25e34de0 - BaseThreadInitThunk
  44:     0x7fff2767e40b - RtlUserThreadStart


failures:
    integration::run::websocket_server_multi_field_connection_header
```

https://github.com/denoland/deno/actions/runs/3919594286/jobs/6700692268