Upgrade to rustc 1.19.0-nightly (06fb4d256 2017-04-30)
Upgrade to rustc 1.19.0-nightly (06fb4d256 2017-04-30)

mattnenterprise/servo,mattnenterprise/servo,anthgur/servo,mattnenterprise/servo,CJ8664/servo,szeged/servo,nnethercote/servo,rnestler/servo,CJ8664/servo,KiChjang/servo,paulrouget/servo,splav/servo,avadacatavra/servo,paulrouget/servo,SimonSapin/servo,dsandeephegde/servo,emilio/servo,eddyb/servo,upsuper/servo,KiChjang/servo,sadmansk/servo,thiagopnts/servo,mattnenterprise/servo,notriddle/servo,thiagopnts/servo,mattnenterprise/servo,jimberlage/servo,mbrubeck/servo,dati91/servo,rnestler/servo,mbrubeck/servo,peterjoel/servo,avadacatavra/servo,splav/servo,fiji-flo/servo,mbrubeck/servo,szeged/servo,fiji-flo/servo,szeged/servo,dati91/servo,canaltinova/servo,rnestler/servo,anthgur/servo,fiji-flo/servo,mbrubeck/servo,mattnenterprise/servo,thiagopnts/servo,peterjoel/servo,KiChjang/servo,peterjoel/servo,cbrewster/servo,splav/servo,jimberlage/servo,eddyb/servo,larsbergstrom/servo,notriddle/servo,peterjoel/servo,notriddle/servo,notriddle/servo,splav/servo,rnestler/servo,cbrewster/servo,jimberlage/servo,paulrouget/servo,paulrouget/servo,rnestler/servo,pyfisch/servo,thiagopnts/servo,splav/servo,fiji-flo/servo,dsandeephegde/servo,SimonSapin/servo,nnethercote/servo,KiChjang/servo,fiji-flo/servo,jimberlage/servo,fiji-flo/servo,emilio/servo,DominoTree/servo,DominoTree/servo,canaltinova/servo,eddyb/servo,mbrubeck/servo,ConnorGBrewster/servo,dsandeephegde/servo,larsbergstrom/servo,eddyb/servo,mattnenterprise/servo,CJ8664/servo,DominoTree/servo,peterjoel/servo,avadacatavra/servo,paulrouget/servo,DominoTree/servo,anthgur/servo,larsbergstrom/servo,CJ8664/servo,notriddle/servo,larsbergstrom/servo,saneyuki/servo,notriddle/servo,DominoTree/servo,canaltinova/servo,pyfisch/servo,eddyb/servo,DominoTree/servo,ConnorGBrewster/servo,splav/servo,CJ8664/servo,mbrubeck/servo,splav/servo,dsandeephegde/servo,eddyb/servo,saneyuki/servo,nnethercote/servo,szeged/servo,avadacatavra/servo,peterjoel/servo,saneyuki/servo,dati91/servo,sadmansk/servo,larsbergstrom/servo,sadmansk/servo,paulrouget/servo,KiChjang/servo,KiChjang/servo,upsuper/servo,sadmansk/servo,jimberlage/servo,avadacatavra/servo,szeged/servo,fiji-flo/servo,DominoTree/servo,KiChjang/servo,eddyb/servo,szeged/servo,cbrewster/servo,dsandeephegde/servo,canaltinova/servo,thiagopnts/servo,CJ8664/servo,avadacatavra/servo,jimberlage/servo,pyfisch/servo,mbrubeck/servo,rnestler/servo,dsandeephegde/servo,emilio/servo,canaltinova/servo,pyfisch/servo,nnethercote/servo,mbrubeck/servo,ConnorGBrewster/servo,larsbergstrom/servo,cbrewster/servo,pyfisch/servo,saneyuki/servo,peterjoel/servo,upsuper/servo,emilio/servo,larsbergstrom/servo,rnestler/servo,SimonSapin/servo,szeged/servo,sadmansk/servo,dati91/servo,larsbergstrom/servo,mattnenterprise/servo,thiagopnts/servo,pyfisch/servo,nnethercote/servo,peterjoel/servo,pyfisch/servo,avadacatavra/servo,avadacatavra/servo,notriddle/servo,DominoTree/servo,szeged/servo,upsuper/servo,SimonSapin/servo,sadmansk/servo,ConnorGBrewster/servo,saneyuki/servo,emilio/servo,larsbergstrom/servo,canaltinova/servo,dati91/servo,saneyuki/servo,fiji-flo/servo,jimberlage/servo,canaltinova/servo,ConnorGBrewster/servo,notriddle/servo,KiChjang/servo,paulrouget/servo,upsuper/servo,cbrewster/servo,anthgur/servo,SimonSapin/servo,pyfisch/servo,CJ8664/servo,cbrewster/servo,ConnorGBrewster/servo,sadmansk/servo,paulrouget/servo,notriddle/servo,KiChjang/servo,splav/servo,eddyb/servo,cbrewster/servo,emilio/servo,larsbergstrom/servo,splav/servo,jimberlage/servo,splav/servo,ConnorGBrewster/servo,peterjoel/servo,dati91/servo,emilio/servo,thiagopnts/servo,nnethercote/servo,peterjoel/servo,dati91/servo,dsandeephegde/servo,DominoTree/servo,saneyuki/servo,anthgur/servo,paulrouget/servo,anthgur/servo,sadmansk/servo,upsuper/servo,nnethercote/servo,canaltinova/servo,CJ8664/servo,anthgur/servo,KiChjang/servo,ConnorGBrewster/servo,emilio/servo,DominoTree/servo,dsandeephegde/servo,saneyuki/servo,saneyuki/servo,SimonSapin/servo,jimberlage/servo,paulrouget/servo,pyfisch/servo,anthgur/servo,rnestler/servo,emilio/servo,SimonSapin/servo,nnethercote/servo,saneyuki/servo,cbrewster/servo,dati91/servo,upsuper/servo,szeged/servo,notriddle/servo,upsuper/servo,pyfisch/servo,nnethercote/servo,SimonSapin/servo,thiagopnts/servo,szeged/servo,nnethercote/servo,emilio/servo