Bultins .reverse and .sort are likely going to be removed soon.

[Stefan Koch via Digitalmars-d-announce]

On Sunday, 28 May 2017 at 09:23:01 UTC, Ivan Kazmenko wrote:
> On Wednesday, 24 May 2017 at 22:56:15 UTC, Stefan Koch wrote:
>> I just finished the PR to remove the builtin array properties 
>> .sort and .reverse.
>
> That's nice!  Finally, we could get rid of the awkward 
> reverse() or sort!() in UFCS chains while all the rest don't 
> need the parentheses.
>
>> while the dmd changes were trivial fixing all the broken tests 
>> were not.
>> Even tests that were supposed to call std.algorithm.sort 
>> turned out to use the property by accident; (because of a 
>> small error which caused the sort template not to instantiate).
>
> So, the process exposed latent bugs in the tests, which is 
> another indication that the change is a Good Thing.  I wonder 
> how the deprecation message didn't make it happen sooner though.
>
> Ivan Kazmenko.

If the test is supposed to succseed we don't check the 
deprecation messages.