Brew Memcached error: Serialization of 'Closure' is not allowed on brew php70

When using the Cache facade to save a query I get the error:

Exception in MemcachedStore.php line 85:
Serialization of 'Closure' is not allowed

This only happens on a mac with php70 installed (with memcached). On any other machine this works fine with the same data. It only happens when I try to save query output (collections).

In phpinfo the memcached module does show and with the serializer igbinary like the others.

Just to elaborate, the code is fine, nothing special. I'm guessing it's more of a settings or versions problem.

Any help would be appreciated.

via Chebli Mohamed