$ ./mach run --release --browser --multiprocess
/home/ajeffrey/github/asajeffrey/servo/target/release/build
thread '<main>' panicked at 'assertion failed: DEFAULT_OPTIONS.is_null()', /home/ajeffrey/github/asajeffrey/servo/components/util/opts.rs:865
stack backtrace:
   1:     0x55d57aca0360 - std::sys::backtrace::tracing::imp::write::h714760a4c8c0cdd8
   2:     0x55d57aca79ab - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hff309ab1d83ffd90
   3:     0x55d57aca7613 - std::panicking::default_hook::h08ad3bb09872855b
   4:     0x55d57a5bf4f6 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h0e7bee18dea07167
   5:     0x55d57ac8d903 - std::sys_common::unwind::begin_unwind_inner::h406d5f1a330b854b
   6:     0x55d579423a8f - std::sys_common::unwind::begin_unwind::h51df842978a11a26
   7:     0x55d57a5cd75c - util::opts::set_defaults::h098942ea84f16a68
   8:     0x55d5793cc55e - servo::run_content_process::hd4a30451af3ea9d0
   9:     0x55d5792a6389 - servo::main::h6924e5658370f6b5
  10:     0x55d57aca70b4 - std::sys_common::unwind::try::try_fn::hfe4b14ce00a3f42f
  11:     0x55d57ac9f53b - __rust_try
  12:     0x55d57aca6afb - std::rt::lang_start::h12d9b3310b48a726
  13:     0x7fe6823a4a3f - __libc_start_main
  14:     0x55d5792a58f8 - _start
  15:                0x0 - <unknown>