Trying to debug local tests causes segfault.

[Stubbs]

I have a breakpoint set in my unit tests and I've started debugging in Sublime. When I run the tests I get the following error:

94846 segmentation fault phpunit -c tests/phpunit.xml tests

and I have to force stop Sublime as it stops responding.

The stack trace produced by force quitting is here: https://gist.github.com/22bc50d0575d714320dd

If you need any more info, just let me know as I can reproduce this every time.