trace3

Thread 26 (Thread 0x7f0be3bfd6c0 (LWP 196896) "tokio-runtime-w"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x000055d5f908e2d4 in std::sys::sync::rwlock::futex::RwLock::read_contended ()
#2  0x000055d5f91ea56e in lsm_tree::tree::Tree::create_internal_range ()
#3  0x000055d5f91e9aa1 in <lsm_tree::tree::Tree as lsm_tree::abstract::AbstractTree>::range ()
#4  0x000055d5f9194137 in std::sys::backtrace::__rust_begin_short_backtrace ()
#5  0x000055d5f91d0c3b in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#6  0x000055d5fa8dbbfb in std::sys::pal::unix::thread::Thread::new::thread_start ()
#7  0x00007f0c32a7ba94 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007f0c32b08a34 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 25 (Thread 0x7f0c3096c6c0 (LWP 196880) "tokio-runtime-w"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x000055d5f908e2d4 in std::sys::sync::rwlock::futex::RwLock::read_contended ()
#2  0x000055d5f91ea56e in lsm_tree::tree::Tree::create_internal_range ()
#3  0x000055d5f91e9aa1 in <lsm_tree::tree::Tree as lsm_tree::abstract::AbstractTree>::range ()
#4  0x000055d5f9194137 in std::sys::backtrace::__rust_begin_short_backtrace ()
#5  0x000055d5f91d0c3b in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#6  0x000055d5fa8dbbfb in std::sys::pal::unix::thread::Thread::new::thread_start ()
#7  0x00007f0c32a7ba94 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007f0c32b08a34 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 23 (Thread 0x7f0c303606c0 (LWP 196878) "external stdin "):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x000055d5fa8457a9 in parking_lot::condvar::Condvar::wait_until_internal ()
#2  0x000055d5fa81b06e in tokio::runtime::park::Inner::park ()
#3  0x000055d5f90f7152 in tokio::runtime::park::CachedParkThread::block_on ()
#4  0x000055d5f91e7805 in tokio::runtime::handle::Handle::block_on ()
#5  0x000055d5f91489d9 in <nu_protocol::pipeline::byte_stream::ReadIterator<I> as std::io::Read>::read ()
#6  0x000055d5f9139087 in std::io::Read::read_buf ()
#7  0x000055d5f94c55f8 in std::io::copy::stack_buffer_copy ()
#8  0x000055d5f95cee29 in nu_protocol::pipeline::byte_stream::copy_with_signals ()
#9  0x000055d5f95ca082 in nu_protocol::pipeline::byte_stream::ByteStream::write_to ()
#10 0x000055d5f9a645b7 in nu_command::system::run_external::write_pipeline_data ()
#11 0x000055d5f9620ec8 in std::sys::backtrace::__rust_begin_short_backtrace ()
#12 0x000055d5f9a002a7 in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#13 0x000055d5fa8dbbfb in std::sys::pal::unix::thread::Thread::new::thread_start ()
#14 0x00007f0c32a7ba94 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#15 0x00007f0c32b08a34 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 22 (Thread 0x7f0be3fff6c0 (LWP 196876) "tokio-runtime-w"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x000055d5f908df06 in std::sys::sync::mutex::futex::Mutex::lock_contended ()
#2  0x000055d5f935366d in fjall::batch::Batch::commit ()
#3  0x000055d5f92be069 in xs::store::Store::insert_frame ()
#4  0x000055d5f90e5829 in xs::store::Store::append::{{closure}} ()
#5  0x000055d5f90e6a4a in xs::tasks::append::{{closure}} ()
#6  0x000055d5f90f86bf in tokio::runtime::park::CachedParkThread::block_on ()
#7  0x000055d5f91e7575 in tokio::runtime::handle::Handle::block_on ()
#8  0x000055d5f9195c82 in std::sys::backtrace::__rust_begin_short_backtrace ()
#9  0x000055d5f91d0ec7 in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#10 0x000055d5fa8dbbfb in std::sys::pal::unix::thread::Thread::new::thread_start ()
#11 0x00007f0c32a7ba94 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#12 0x00007f0c32b08a34 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 20 (Thread 0x7f0c305676c0 (LWP 196874) "async-io"):
#0  0x000055d5f940fe80 in polling::epoll::Poller::wait ()
#1  0x000055d5f94113df in polling::Poller::wait ()
#2  0x000055d5f9403bb0 in async_io::reactor::ReactorLock::react ()
#3  0x000055d5f9408fcd in async_io::driver::main_loop ()
#4  0x000055d5f9407996 in std::sys::backtrace::__rust_begin_short_backtrace ()
#5  0x000055d5f9409f86 in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#6  0x000055d5fa8dbbfb in std::sys::pal::unix::thread::Thread::new::thread_start ()
#7  0x00007f0c32a7ba94 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007f0c32b08a34 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 19 (Thread 0x7f0c307686c0 (LWP 196873) "async-std/runti"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x000055d5fa8dfe35 in std::sys::sync::condvar::futex::Condvar::wait ()
#2  0x000055d5f94122d9 in parking::Inner::park ()
#3  0x000055d5f93f5c86 in async_io::driver::block_on ()
#4  0x000055d5f93f0742 in async_global_executor::threading::thread_main_loop ()
#5  0x000055d5f93f3597 in std::sys::backtrace::__rust_begin_short_backtrace ()
#6  0x000055d5f93fcb02 in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#7  0x000055d5fa8dbbfb in std::sys::pal::unix::thread::Thread::new::thread_start ()
#8  0x00007f0c32a7ba94 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007f0c32b08a34 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 17 (Thread 0x7f0c30b736c0 (LWP 196871) "tokio-runtime-w"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x000055d5f908df06 in std::sys::sync::mutex::futex::Mutex::lock_contended ()
#2  0x000055d5f935366d in fjall::batch::Batch::commit ()
#3  0x000055d5f92bdeb3 in xs::store::Store::remove ()
#4  0x000055d5f9194bf9 in std::sys::backtrace::__rust_begin_short_backtrace ()
#5  0x000055d5f91d0c3b in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#6  0x000055d5fa8dbbfb in std::sys::pal::unix::thread::Thread::new::thread_start ()
#7  0x00007f0c32a7ba94 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007f0c32b08a34 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 16 (Thread 0x7f0c30d746c0 (LWP 196870) "tokio-runtime-w"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x000055d5f908e449 in std::sys::sync::rwlock::futex::RwLock::write_contended ()
#2  0x000055d5f93d7cdb in <lsm_tree::tree::Tree as lsm_tree::abstract::AbstractTree>::lock_active_memtable ()
#3  0x000055d5f9353bfb in fjall::batch::Batch::commit ()
#4  0x000055d5f92bdeb3 in xs::store::Store::remove ()
#5  0x000055d5f9194bf9 in std::sys::backtrace::__rust_begin_short_backtrace ()
#6  0x000055d5f91d0c3b in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#7  0x000055d5fa8dbbfb in std::sys::pal::unix::thread::Thread::new::thread_start ()
#8  0x00007f0c32a7ba94 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007f0c32b08a34 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 15 (Thread 0x7f0c30f7b6c0 (LWP 196869) "xs"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x000055d5fa8c4046 in std::thread::park ()
#2  0x000055d5f933576f in crossbeam_channel::flavors::zero::Channel<T>::recv::{{closure}} ()
#3  0x000055d5f9334f28 in crossbeam_channel::flavors::zero::Channel<T>::recv ()
#4  0x000055d5f92d1129 in crossbeam_channel::channel::Receiver<T>::recv ()
#5  0x000055d5f926cdb8 in std::sys::backtrace::__rust_begin_short_backtrace ()
#6  0x000055d5f9259b29 in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#7  0x000055d5fa8dbbfb in std::sys::pal::unix::thread::Thread::new::thread_start ()
#8  0x00007f0c32a7ba94 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007f0c32b08a34 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 14 (Thread 0x7f0c3117f6c0 (LWP 196868) "xs"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x000055d5fa8c4046 in std::thread::park ()
#2  0x000055d5f933576f in crossbeam_channel::flavors::zero::Channel<T>::recv::{{closure}} ()
#3  0x000055d5f9334f28 in crossbeam_channel::flavors::zero::Channel<T>::recv ()
#4  0x000055d5f92d1129 in crossbeam_channel::channel::Receiver<T>::recv ()
#5  0x000055d5f926cdb8 in std::sys::backtrace::__rust_begin_short_backtrace ()
#6  0x000055d5f9259b29 in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#7  0x000055d5fa8dbbfb in std::sys::pal::unix::thread::Thread::new::thread_start ()
#8  0x00007f0c32a7ba94 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007f0c32b08a34 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 13 (Thread 0x7f0c313836c0 (LWP 196867) "xs"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x000055d5fa8c4046 in std::thread::park ()
#2  0x000055d5f933576f in crossbeam_channel::flavors::zero::Channel<T>::recv::{{closure}} ()
#3  0x000055d5f9334f28 in crossbeam_channel::flavors::zero::Channel<T>::recv ()
#4  0x000055d5f92d1129 in crossbeam_channel::channel::Receiver<T>::recv ()
#5  0x000055d5f926cdb8 in std::sys::backtrace::__rust_begin_short_backtrace ()
#6  0x000055d5f9259b29 in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#7  0x000055d5fa8dbbfb in std::sys::pal::unix::thread::Thread::new::thread_start ()
#8  0x00007f0c32a7ba94 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007f0c32b08a34 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 12 (Thread 0x7f0c315876c0 (LWP 196866) "xs"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x000055d5fa8c4046 in std::thread::park ()
#2  0x000055d5f933576f in crossbeam_channel::flavors::zero::Channel<T>::recv::{{closure}} ()
#3  0x000055d5f9334f28 in crossbeam_channel::flavors::zero::Channel<T>::recv ()
#4  0x000055d5f92d1129 in crossbeam_channel::channel::Receiver<T>::recv ()
#5  0x000055d5f926cdb8 in std::sys::backtrace::__rust_begin_short_backtrace ()
#6  0x000055d5f9259b29 in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#7  0x000055d5fa8dbbfb in std::sys::pal::unix::thread::Thread::new::thread_start ()
#8  0x00007f0c32a7ba94 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007f0c32b08a34 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 11 (Thread 0x7f0c3178b6c0 (LWP 196865) "xs"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x000055d5fa8c4046 in std::thread::park ()
#2  0x000055d5f933576f in crossbeam_channel::flavors::zero::Channel<T>::recv::{{closure}} ()
#3  0x000055d5f9334f28 in crossbeam_channel::flavors::zero::Channel<T>::recv ()
#4  0x000055d5f92d1129 in crossbeam_channel::channel::Receiver<T>::recv ()
#5  0x000055d5f926cdb8 in std::sys::backtrace::__rust_begin_short_backtrace ()
#6  0x000055d5f9259b29 in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#7  0x000055d5fa8dbbfb in std::sys::pal::unix::thread::Thread::new::thread_start ()
#8  0x00007f0c32a7ba94 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007f0c32b08a34 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 10 (Thread 0x7f0c3198f6c0 (LWP 196864) "xs"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x000055d5fa8c4046 in std::thread::park ()
#2  0x000055d5f933576f in crossbeam_channel::flavors::zero::Channel<T>::recv::{{closure}} ()
#3  0x000055d5f9334f28 in crossbeam_channel::flavors::zero::Channel<T>::recv ()
#4  0x000055d5f92d1129 in crossbeam_channel::channel::Receiver<T>::recv ()
#5  0x000055d5f926cdb8 in std::sys::backtrace::__rust_begin_short_backtrace ()
#6  0x000055d5f9259b29 in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#7  0x000055d5fa8dbbfb in std::sys::pal::unix::thread::Thread::new::thread_start ()
#8  0x00007f0c32a7ba94 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007f0c32b08a34 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 9 (Thread 0x7f0c31b936c0 (LWP 196863) "xs"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x000055d5fa8c4046 in std::thread::park ()
#2  0x000055d5f933576f in crossbeam_channel::flavors::zero::Channel<T>::recv::{{closure}} ()
#3  0x000055d5f9334f28 in crossbeam_channel::flavors::zero::Channel<T>::recv ()
#4  0x000055d5f92d1129 in crossbeam_channel::channel::Receiver<T>::recv ()
#5  0x000055d5f926cdb8 in std::sys::backtrace::__rust_begin_short_backtrace ()
#6  0x000055d5f9259b29 in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#7  0x000055d5fa8dbbfb in std::sys::pal::unix::thread::Thread::new::thread_start ()
#8  0x00007f0c32a7ba94 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007f0c32b08a34 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 8 (Thread 0x7f0c31d976c0 (LWP 196862) "xs"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x000055d5fa8c4046 in std::thread::park ()
#2  0x000055d5f933576f in crossbeam_channel::flavors::zero::Channel<T>::recv::{{closure}} ()
#3  0x000055d5f9334f28 in crossbeam_channel::flavors::zero::Channel<T>::recv ()
#4  0x000055d5f92d1129 in crossbeam_channel::channel::Receiver<T>::recv ()
#5  0x000055d5f926cdb8 in std::sys::backtrace::__rust_begin_short_backtrace ()
#6  0x000055d5f9259b29 in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#7  0x000055d5fa8dbbfb in std::sys::pal::unix::thread::Thread::new::thread_start ()
#8  0x00007f0c32a7ba94 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007f0c32b08a34 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 7 (Thread 0x7f0c31f9b6c0 (LWP 196861) "xs"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x000055d5fa8c4046 in std::thread::park ()
#2  0x000055d5f933576f in crossbeam_channel::flavors::zero::Channel<T>::recv::{{closure}} ()
#3  0x000055d5f9334f28 in crossbeam_channel::flavors::zero::Channel<T>::recv ()
#4  0x000055d5f92d1129 in crossbeam_channel::channel::Receiver<T>::recv ()
#5  0x000055d5f926cdb8 in std::sys::backtrace::__rust_begin_short_backtrace ()
#6  0x000055d5f9259b29 in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#7  0x000055d5fa8dbbfb in std::sys::pal::unix::thread::Thread::new::thread_start ()
#8  0x00007f0c32a7ba94 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007f0c32b08a34 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 6 (Thread 0x7f0c3219c6c0 (LWP 196860) "xs"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x000055d5f908e2d4 in std::sys::sync::rwlock::futex::RwLock::read_contended ()
#2  0x000055d5f932d791 in fjall::partition::PartitionHandle::get ()
#3  0x000055d5f92bd7d5 in xs::store::Store::head ()
#4  0x000055d5f933407d in <xs::nu::commands::head_command::HeadCommand as nu_protocol::engine::command::Command>::run ()
#5  0x000055d5f92e20c5 in nu_engine::eval_ir::eval_call ()
#6  0x000055d5f92df2aa in nu_engine::eval_ir::eval_instruction ()
#7  0x000055d5f92dbaa9 in nu_engine::eval_ir::eval_ir_block ()
#8  0x000055d5f92ca0d2 in nu_engine::eval::eval_block ()
#9  0x000055d5f9277ca1 in xs::handlers::handler::Handler::eval ()
#10 0x000055d5f91498ac in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#11 0x000055d5f926cdd6 in std::sys::backtrace::__rust_begin_short_backtrace ()
#12 0x000055d5f9259b29 in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#13 0x000055d5fa8dbbfb in std::sys::pal::unix::thread::Thread::new::thread_start ()
#14 0x00007f0c32a7ba94 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#15 0x00007f0c32b08a34 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 5 (Thread 0x7f0c323d06c0 (LWP 196859) "monitor"):
#0  0x00007f0c32acbadf in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=0x7f0c323cf2b0, rem=0x7f0c323cf2b0) at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78
#1  0x00007f0c32ad8a27 in __GI___nanosleep (req=<optimized out>, rem=<optimized out>) at ../sysdeps/unix/sysv/linux/nanosleep.c:25
#2  0x000055d5fa8c3f00 in std::thread::sleep ()
#3  0x000055d5f9361599 in std::sys::backtrace::__rust_begin_short_backtrace ()
#4  0x000055d5f9380ca7 in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#5  0x000055d5fa8dbbfb in std::sys::pal::unix::thread::Thread::new::thread_start ()
#6  0x00007f0c32a7ba94 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#7  0x00007f0c32b08a34 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 4 (Thread 0x7f0c325d46c0 (LWP 196858) "compaction"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x000055d5fa8dfe35 in std::sys::sync::condvar::futex::Condvar::wait ()
#2  0x000055d5f9388702 in std_semaphore::Semaphore::acquire ()
#3  0x000055d5f936292a in std::sys::backtrace::__rust_begin_short_backtrace ()
#4  0x000055d5f93811a9 in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#5  0x000055d5fa8dbbfb in std::sys::pal::unix::thread::Thread::new::thread_start ()
#6  0x00007f0c32a7ba94 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#7  0x00007f0c32b08a34 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 3 (Thread 0x7f0c327d56c0 (LWP 196857) "flusher"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x000055d5fa8dfe35 in std::sys::sync::condvar::futex::Condvar::wait ()
#2  0x000055d5f9388702 in std_semaphore::Semaphore::acquire ()
#3  0x000055d5f9362dce in std::sys::backtrace::__rust_begin_short_backtrace ()
#4  0x000055d5f9380794 in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#5  0x000055d5fa8dbbfb in std::sys::pal::unix::thread::Thread::new::thread_start ()
#6  0x00007f0c32a7ba94 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#7  0x00007f0c32b08a34 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 2 (Thread 0x7f0c329d96c0 (LWP 196856) "tokio-runtime-w"):
#0  0x00007f0c32b09042 in epoll_wait (epfd=3, events=0x55d5fc9fbcb0, maxevents=1024, timeout=-1) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1  0x000055d5fa8430e1 in mio::poll::Poll::poll ()
#2  0x000055d5fa818dc5 in tokio::runtime::io::driver::Driver::turn ()
#3  0x000055d5fa827282 in tokio::runtime::time::Driver::park_internal ()
#4  0x000055d5fa831dde in tokio::runtime::scheduler::multi_thread::park::Parker::park ()
#5  0x000055d5fa837a8a in tokio::runtime::scheduler::multi_thread::worker::Context::park_timeout ()
#6  0x000055d5fa83712f in tokio::runtime::scheduler::multi_thread::worker::Context::run ()
#7  0x000055d5fa83b4a4 in tokio::runtime::context::runtime::enter_runtime ()
#8  0x000055d5fa83643a in tokio::runtime::scheduler::multi_thread::worker::run ()
#9  0x000055d5fa82a2a7 in <tokio::runtime::blocking::task::BlockingTask<T> as core::future::future::Future>::poll ()
#10 0x000055d5fa82dcce in tokio::runtime::task::core::Core<T,S>::poll ()
#11 0x000055d5fa812e34 in tokio::runtime::task::harness::Harness<T,S>::poll ()
#12 0x000055d5fa81e032 in tokio::runtime::blocking::pool::Inner::run ()
#13 0x000055d5fa827c5e in std::sys::backtrace::__rust_begin_short_backtrace ()
#14 0x000055d5fa828469 in core::ops::function::FnOnce::call_once{{vtable.shim}} ()
#15 0x000055d5fa8dbbfb in std::sys::pal::unix::thread::Thread::new::thread_start ()
#16 0x00007f0c32a7ba94 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#17 0x00007f0c32b08a34 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 1 (Thread 0x7f0c329dab40 (LWP 196853) "xs"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x000055d5fa8457a9 in parking_lot::condvar::Condvar::wait_until_internal ()
#2  0x000055d5fa81b06e in tokio::runtime::park::Inner::park ()
#3  0x000055d5f90f730b in tokio::runtime::park::CachedParkThread::block_on ()
#4  0x000055d5f91e81ca in tokio::runtime::context::runtime::enter_runtime ()
#5  0x000055d5f91a534c in tokio::runtime::runtime::Runtime::block_on ()
#6  0x000055d5f920f15b in xs::main ()
#7  0x000055d5f91965b3 in std::sys::backtrace::__rust_begin_short_backtrace ()
#8  0x000055d5f922cd79 in std::rt::lang_start::{{closure}} ()
#9  0x000055d5fa8c390e in std::rt::lang_start_internal ()
#10 0x000055d5f920f355 in main ()