Crash (illegal instruction) while browsing http://anandtech.com

[atomsymbol]

Page loads, browsing the site ends up with a crash.

$ ./servo --version
Servo 0.0.1-4997ec2

$ ./servo http://anandtech.com
...
Illegal instruction (core dumped)

$ gdb servo core.ScriptThread\ Pi.9889
(gdb) bt
#0  0x0000558dabb63142 in servo::install_crash_handler::handler ()
#1  <signal handler called>
#2  0x0000558dabb63142 in servo::install_crash_handler::handler ()
#3  0x0000558dae2d95e4 in AsmJSFaultHandler (signum=<optimized out>, info=0x7f8e5e9fc1b0, context=0x7f8e5e9fc080)
at /home/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/mozjs_sys-0.51.4/mozjs/js/src/asmjs/WasmSignalHandlers.cpp:1171
#4  <signal handler called>
#5  JS_GetObjectRuntime (obj=0x7f8f1da4e380) at /home/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/mozjs_sys-0.51.4/mozjs/js/src/jsobj.h:170
#6  0x0000558dac738aa0 in <script::dom::promise::Promise as core::ops::drop::Drop>::drop ()
#7  0x0000558dac00a86a in <alloc::rc::Rc<T> as core::ops::drop::Drop>::drop ()
#8  0x0000558dac013a05 in <std::collections::hash::table::RawTable<K, V> as core::ops::drop::Drop>::drop ()
#9  0x0000558dac8326bb in std::thread::local::fast::destroy_value ()
#10 0x00007f8f94938847 in __GI___call_tls_dtors () at cxa_thread_atexit_impl.c:155
#11 0x00007f8f96148932 in start_thread () at pthread_create.c:472
#12 0x00007f8f94a01e7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95`

(gdb) disass
Dump of assembler code for function _ZN5servo21install_crash_handler7handler17hdb154395c74011a1E:
   ...
   0x0000558dabb63133 <+451>:	callq  0x558dae6ea990 <std::io::stdio::_print>
   0x0000558dabb63138 <+456>:	lea    0x10(%rsp),%rdi
   0x0000558dabb6313d <+461>:	callq  0x558dabb602b0 <core::ptr::drop_in_place>
=> 0x0000558dabb63142 <+466>:	ud2    
   0x0000558dabb63144 <+468>:	ud2
   ...