backtrace

stack backtrace:                                                                                                                                                         
   0:     0x564c3c757f93 - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::hf8722b0178fb1b63                                                                  
                               at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39                                                                                      
   1:     0x564c3c753648 - std::sys_common::backtrace::_print::hc40139e5f1d656ee                                                                                         
                               at src/libstd/sys_common/backtrace.rs:70                                                                                                  
   2:     0x564c3c7568b2 - std::panicking::default_hook::{{closure}}::h993d43465919c16a                                                                                  
                               at src/libstd/sys_common/backtrace.rs:58                                                                                                  
                               at src/libstd/panicking.rs:200                                                                                                            
   3:     0x564c3c756624 - std::panicking::default_hook::h73d2c2ec3d9ba5a4                                                                                               
                               at src/libstd/panicking.rs:215
   4:     0x564c3c756fc0 - std::panicking::rust_panic_with_hook::h744417edfe714d72
                               at src/libstd/panicking.rs:478
   5:     0x564c3c756b41 - std::panicking::continue_panic_fmt::h3557b3c3fa21b47b
                               at src/libstd/panicking.rs:385
   6:     0x564c3c756a25 - rust_begin_unwind
                               at src/libstd/panicking.rs:312
   7:     0x564c3c76e28c - core::panicking::panic_fmt::h74ee8034b317ceed
                               at src/libcore/panicking.rs:85
   8:     0x564c3c62762f - core::result::unwrap_failed::h9069abe9783fefb6
   9:     0x564c3c624a1d - <quinn::endpoint::Driver as core::ops::drop::Drop>::drop::h04548fc769dc64c4                                                                  
  10:     0x564c3c56f7ac - core::ptr::real_drop_in_place::h4c66b0f762cc10a8
  11:     0x564c3c562611 - tokio_current_thread::scheduler::release_node::h2ffe5bd68feb837b                                                                             
  12:     0x564c3c566f1b - <std::thread::local::LocalKey<T>>::with::h313a934144a9407e                                                                                   
  13:     0x564c3c56293c - core::ptr::real_drop_in_place::h211edad815d1ff1d
  14:     0x564c3c5658dc - <tokio_current_thread::scheduler::Scheduler<U>>::tick::h4650b90331678843                                                                     
  15:     0x564c3c571276 - <tokio_current_thread::Entered<'a, P>>::block_on::h97090e0bdbfbc729                                                                          
  16:     0x564c3c569fd2 - <std::thread::local::LocalKey<T>>::with::haad0d02f1f5ab0e1                                                                                   
  17:     0x564c3c56a4ff - <std::thread::local::LocalKey<T>>::with::hc70bb218fb047179
  18:     0x564c3c566d38 - <std::thread::local::LocalKey<T>>::with::h0f93e7e15de3a63c
  19:     0x564c3c56bfa0 - <std::thread::local::LocalKey<T>>::with::hf05750fa593edc63
  20:     0x564c3c57aa95 - tokio::runtime::current_thread::runtime::Runtime::block_on::heec5f6322f6e5096
  21:     0x564c3c54a419 - std::sys_common::backtrace::__rust_begin_short_backtrace::h2663bf90e1369f48
  22:     0x564c3c75a8d9 - __rust_maybe_catch_panic
                               at src/libpanic_unwind/lib.rs:92
  23:     0x564c3c57a4cb - <F as alloc::boxed::FnBox<A>>::call_box::h194c6c96eb9f67da
  24:     0x564c3c759c9d - std::sys::unix::thread::Thread::new::thread_start::h6fb76bcf544b6181
                               at /rustc/2aa4c46cfdd726e97360c2734835aa3515e8c858/src/liballoc/boxed.rs:744
                               at src/libstd/sys_common/thread.rs:14
                               at src/libstd/sys/unix/thread.rs:81
  25:     0x7f7c7ba8758d - start_thread
  26:     0x7f7c7b99b6a2 - clone
  27:                0x0 - <unknown>