Auto merge of #2329 - alexcrichton:fix-nightly, r=alexcrichton
Auto merge of #2329 - alexcrichton:fix-nightly, r=alexcrichton

Relax an output assertion to just contains instead of exhaustively matching

mark-buer/cargo,tshepang/cargo,tsurai/cargo,AndiDog/cargo,sbeckeriv/cargo,nipunn1313/cargo,eminence/cargo,achanda/cargo,ThinTim/cargo,achanda/cargo,durka/cargo,AndiDog/cargo,blaenk/cargo,blaenk/cargo,tsurai/cargo,blaenk/cargo,rustyhorde/cargo,durka/cargo,blaenk/cargo,rust-lang/cargo,rustyhorde/cargo,rust-lang/cargo,brson/cargo,rustyhorde/cargo,mark-buer/cargo,AndiDog/cargo,tshepang/cargo,achanda/cargo,vojtechkral/cargo,AndiDog/cargo,eminence/cargo,ThinTim/cargo,mark-buer/cargo,rust-lang/cargo,tshepang/cargo,mark-buer/cargo,tshepang/cargo,brson/cargo,tsurai/cargo,rustyhorde/cargo,eminence/cargo,nipunn1313/cargo,rust-lang/cargo,ThinTim/cargo,ThinTim/cargo,nipunn1313/cargo,sbeckeriv/cargo,achanda/cargo,eminence/cargo,brson/cargo,mark-buer/cargo,vojtechkral/cargo,durka/cargo,brson/cargo,vojtechkral/cargo,tsurai/cargo,tsurai/cargo,nipunn1313/cargo,sbeckeriv/cargo,brson/cargo,AndiDog/cargo,vojtechkral/cargo,durka/cargo,blaenk/cargo,ThinTim/cargo,sbeckeriv/cargo