Route middleware memory exhausted

[tomvo]

I'm using dingo/api and I want to exclude the caching middleware for API routes so instead of registering the middlware in the kernel $middleWare property I wanted to use the routemiddleware.
However when registeren it like so:

        'httpcache.cache' => \Barryvdh\HttpCache\Middleware\CacheRequests::class,
        'httpcache.esi' => \Barryvdh\HttpCache\Middleware\ParseEsi::class,

and then loading it like so:

Route::group(['middleware' => ['httpcache.cache','httpcache.esi'] ], function(){

results in a memory exhausted fatal error. When I load just of the two it works fine.
Any clue on what this might be?

edit: changed endless loop to memory exhausted fatal error