Crash when loading shader on html5test.com

[NiLSPACE]

When going to http://html5test.com I get the following error:

Error and stacktrace

called `Option::unwrap()` on a `None` value (thread WebGLThread, at libcore\option.rs:345)
ERROR 2018-07-17T06:40:13Z: webrender::device::gl: Failed to compile shader: ps_text_run

ERROR 2018-07-17T06:40:13Z: webrender::device::gl: Failed to compile shader: ps_text_run

ERROR 2018-07-17T06:40:13Z: webrender::device::gl: Failed to compile shader: ps_text_run

ERROR 2018-07-17T06:40:13Z: webrender::device::gl: Failed to compile shader: ps_text_run

ERROR 2018-07-17T06:40:13Z: webrender::device::gl: Failed to compile shader: ps_text_run

ERROR 2018-07-17T06:40:13Z: webrender::device::gl: Failed to compile shader: ps_text_run

ERROR 2018-07-17T06:40:13Z: webrender::device::gl: Failed to compile shader: ps_text_run

ERROR 2018-07-17T06:40:13Z: webrender::device::gl: Failed to compile shader: ps_text_run

ERROR 2018-07-17T06:40:13Z: webrender::device::gl: Failed to compile shader: ps_text_run

ERROR 2018-07-17T06:40:13Z: webrender::device::gl: Failed to compile shader: ps_text_run

ERROR 2018-07-17T06:40:13Z: webrender::device::gl: Failed to compile shader: ps_text_run

ERROR 2018-07-17T06:40:13Z: webrender::device::gl: Failed to compile shader: ps_text_run

stack backtrace:
ERROR 2018-07-17T06:40:13Z: servo: called `Option::unwrap()` on a `None` value
   0:     0x7ff65009ec8e - <no info>
   1:     0x7ff65009e6ae - <no info>
   2:     0x7ff65009e6fd - <no info>
   3:     0x7ff64e29c7b8 - <no info>
   4:     0x7ff6500a74a2 - <no info>
   5:     0x7ff6500a7004 - <no info>
   6:     0x7ff6500a6ee9 - <no info>
   7:     0x7ff6500cf96c - JS::Value::toPrivateUint32
   8:     0x7ff6500cf89e - JS::Value::toPrivateUint32
   9:     0x7ff64ffe9e02 - <no info>
  10:     0x7ff64ffdfba5 - <no info>
  11:     0x7ffa5a5d6cc1 - CallWindowProcW
  12:     0x7ffa5a5d699c - CallWindowProcW
  13:     0x7ffa5a5e0453 - IsWindowVisible
  14:     0x7ffa5c88dbc4 - KiUserCallbackDispatcher
  15:     0x7ffa59c01f04 - NtUserCreateWindowEx
  16:     0x7ffa5a5c50d7 - CreateWindowExW
  17:     0x7ffa5a5c4961 - CreateWindowExW
  18:     0x7ffa5a5c4792 - CreateWindowExW
  19:     0x7ff64fd96de4 - <no info>
  20:     0x7ff64fd917d2 - <no info>
  21:     0x7ff64f9da733 - <no info>
  22:     0x7ff64f9cc0ea - <no info>
  23:     0x7ff64fa258ea - <no info>
  24:     0x7ff64f9ccdd8 - <no info>
  25:     0x7ff64f9b8d79 - <no info>
  26:     0x7ff6500c98b2 - JS::Value::toPrivateUint32
  27:     0x7ff64f9d8ee1 - <no info>
  28:     0x7ff6500a7a72 - <no info>
  29:     0x7ffa5a013034 - BaseThreadInitThunk
Stack trace for thread "WebGLThread"
stack backtrace:
   0:     0x7ff65009ec8e - <no info>
   1:     0x7ff65009e6ae - <no info>
   2:     0x7ff65009e6fd - <no info>
   3:     0x7ff64e298b0d - <no info>
   4:     0x7ffa58c2d7bb - raise
   5:     0x7ffa58c2e851 - abort
   6:     0x7ffa58c2df1f - terminate
   7:     0x7ff650999a37 - js::BaseProxyHandler::isCallable
   8:     0x7ffa5989c0a0 - UnhandledExceptionFilter
   9:     0x7ffa5c8bc081 - LdrResolveDelayLoadsFromDll
  10:     0x7ffa5c88db30 - KiUserApcDispatcher
  11:     0x7ffa5c88eced - _chkstk
  12:     0x7ffa5c7f6c86 - RtlWalkFrameChain
  13:     0x7ffa5c7f52ca - RtlRaiseException
  14:     0x7ffa597ea388 - RaiseException
  15:     0x7ffa333b43dd - CxxThrowException
  16:     0x7ff6500c9998 - JS::Value::toPrivateUint32
  17:     0x7ff6500a7658 - <no info>
  18:     0x7ff6500a7538 - <no info>
  19:     0x7ff6500a7004 - <no info>
  20:     0x7ff6500a6ee9 - <no info>
  21:     0x7ff6500cf96c - JS::Value::toPrivateUint32
  22:     0x7ff6500cf89e - JS::Value::toPrivateUint32
  23:     0x7ff64ffe9e02 - <no info>
  24:     0x7ff64ffdfba5 - <no info>
  25:     0x7ffa5a5d6cc1 - CallWindowProcW
  26:     0x7ffa5a5d699c - CallWindowProcW
  27:     0x7ffa5a5e0453 - IsWindowVisible
  28:     0x7ffa5c88dbc4 - KiUserCallbackDispatcher
  29:     0x7ffa59c01f04 - NtUserCreateWindowEx
  30:     0x7ffa5a5c50d7 - CreateWindowExW
  31:     0x7ffa5a5c4961 - CreateWindowExW
  32:     0x7ffa5a5c4792 - CreateWindowExW
  33:     0x7ff64fd96de4 - <no info>
  34:     0x7ff64fd917d2 - <no info>
  35:     0x7ff64f9da733 - <no info>
  36:     0x7ff64f9cc0ea - <no info>
  37:     0x7ff64fa258ea - <no info>
  38:     0x7ff64f9ccdd8 - <no info>
  39:     0x7ff64f9b8d79 - <no info>
  40:     0x7ff6500c98b2 - JS::Value::toPrivateUint32
  41:     0x7ff64f9d8ee1 - <no info>
  42:     0x7ff6500a7a72 - <no info>
  43:     0x7ffa5a013034 - BaseThreadInitThunk

Specs:
CPU: I7 6500U @ 2.5GHz,
RAM: 16.0GB Dual-Channel,
GPU: Intel HD Graphics 520
OS: Windows 10 PRO 1803

[NiLSPACE]

This alone seems to make Servo crash, but it doesn't spew out the ps_text_run error with it:

<!DOCTYPE html>
<html>
<head>
</head>
<body>
<script>
var element = document.createElement('canvas');
element.getContext("webgl");
</script>
</body>
</html>

[jdm]

What's the output from the crash?

[NiLSPACE]

The same as before but without

ERROR 2018-07-17T06:40:13Z: webrender::device::gl: Failed to compile shader: ps_text_run