Arsenal took care of business in their Carabao (which we are pronouncing CaraBOW with extra emphasis on the BOW) Cup clash against Doncaster Rovers. Theo Walcott scored. Alexis dribbled a lot. Olivier Giroud tried two overhead kicks. Arsenal saved two goals in situations that involved beleaguered Arsenal defenders making horrible mistakes but being so much faster than the Doncaster forwards it didn't matter. Jack Wilshere played.
So, nothing to worry about, really. Survive and advance.