Tighten up tests
Tighten up tests

crossbeam-rs/crossbeam,crossbeam-rs/crossbeam,msullivan/crossbeam,aturon/crossbeam,schets/crossbeam,steveklabnik/crossbeam,alexcrichton/crossbeam,crossbeam-rs/crossbeam,huonw/crossbeam,crossbeam-rs/crossbeam,ticki/baguette,phil-opp/crossbeam,Ticki/crossbeam