As a work around, I noticed you have the following in your pastebin:
intel_do_flush_locked failed: No such file or directory
Try running it with this:
LIBGL_DRI3_DISABLE=1 obs
I think this crash has something to do with obs not being compatible with dri3 as of yet.
Alternatively you can look in to disabling DRI3 permanently if you want but I wouldn't recommend it as it has pretty good performance in most things!
http://www.phoronix.com/scan.php?page=article&item=intel-skylake-dri3&num=1