Summary:
We probably don't always need to crash in these cases.
This should replace all prod/dev crashes with logged SoftExceptions.
Note that this is currently only used for Fabric.
Changelog:
[Internal]
Reviewed By: mdvacca
Differential Revision: D17170459
fbshipit-source-id: 70757ae88deb8c893b36971d879174e25a194fb9