The waybar process does not exit instantaneously.
Signals may be recevied after main has started freeing resources.
When a worker thread is in `fgets` this time window can last forever.
An easy way to duplicate the crash is pressing ^C twice with a Hyprland module.
Thread 1 "waybar" received signal SIGSEGV, Segmentation fault.
spdlog::sinks::sink::should_log (this=0x5f620b542ca5,
msg_level=spdlog::level::info)
at /usr/src/debug/spdlog/spdlog-1.14.1/include/spdlog/sinks/sink-inl.h:13
13 return msg_level >= level_.load(std::memory_order_relaxed);
(gdb) p $_siginfo._sifields._sigfault.si_addr
$1 = (void *) 0x5f620b542cad