Make PageTree::inner and PageTreeIterator::stack a Vec.
Make PageTree::inner and PageTreeIterator::stack a Vec.

larsbergstrom/servo,splav/servo,szeged/servo,bjwbell/servo,indykish/servo,szeged/servo,eddyb/servo,WriterOfAlicrow/servo,mbrubeck/servo,tafia/servo,codemac/servo,froydnj/servo,chotchki/servo,nerith/servo,jdramani/servo,indykish/servo,wpgallih/servo,juzer10/servo,rentongzhang/servo,zhangjunlei26/servo,mdibaiee/servo,hyowon/servo,cbrewster/servo,chotchki/servo,sadmansk/servo,nerith/servo,eddyb/servo,hyowon/servo,thiagopnts/servo,saneyuki/servo,eddyb/servo,wpgallih/servo,youprofit/servo,juzer10/servo,boghison/servo,ruud-v-a/servo,aweinstock314/servo,froydnj/servo,dsandeephegde/servo,runarberg/servo,mt2d2/servo,rentongzhang/servo,SimonSapin/servo,mukilan/servo,anthgur/servo,codemac/servo,tempbottle/servo,aidanhs/servo,kindersung/servo,nerith/servo,saneyuki/servo,nnethercote/servo,vks/servo,bjwbell/servo,upsuper/servo,DominoTree/servo,tschneidereit/servo,rnestler/servo,huonw/servo,pyfisch/servo,wartman4404/servo,walac/servo,wartman4404/servo,wpgallih/servo,akosel/servo,tafia/servo,mdibaiee/servo,pgonda/servo,saratang/servo,cbrewster/servo,paulrouget/servo,boghison/servo,A-deLuna/servo,snf/servo,nerith/servo,j3parker/servo,tempbottle/servo,dati91/servo,GreenRecycleBin/servo,dmarcos/servo,luniv/servo,srbhklkrn/SERVOENGINE,notriddle/servo,avadacatavra/servo,steveklabnik/servo,ryancanhelpyou/servo,zhangjunlei26/servo,meh/servo,dmarcos/servo,youprofit/servo,meh/servo,WriterOfAlicrow/servo,ConnorGBrewster/servo,nnethercote/servo,aweinstock314/servo,jimberlage/servo,brendandahl/servo,RenaudParis/servo,dhananjay92/servo,tempbottle/servo,saneyuki/servo,boghison/servo,peterjoel/servo,jdramani/servo,walac/servo,emilio/servo,SimonSapin/servo,brendandahl/servo,sadmansk/servo,thiagopnts/servo,emilio/servo,A-deLuna/servo,huonw/servo,tempbottle/servo,kindersung/servo,paulrouget/servo,youprofit/servo,steveklabnik/servo,rnestler/servo,rixrix/servo,snf/servo,AnthonyBroadCrawford/servo,KiChjang/servo,juzer10/servo,cbrewster/servo,g-k/servo,brendandahl/servo,sadmansk/servo,srbhklkrn/SERVOENGINE,caldwell/servo,evilpie/servo,AnthonyBroadCrawford/servo,peterjoel/servo,boghison/servo,eddyb/servo,ryancanhelpyou/servo,ryancanhelpyou/servo,KiChjang/servo,dmarcos/servo,mattnenterprise/servo,ConnorGBrewster/servo,srbhklkrn/SERVOENGINE,kindersung/servo,upsuper/servo,tafia/servo,cbrewster/servo,shrenikgala/servo,DominoTree/servo,Adenilson/prototype-viewing-distance,avadacatavra/servo,rixrix/servo,splav/servo,dmarcos/servo,jgraham/servo,paulrouget/servo,dhananjay92/servo,meh/servo,aweinstock314/servo,anthgur/servo,DominoTree/servo,SimonSapin/servo,samfoo/servo,larsbergstrom/servo,walac/servo,pyfisch/servo,jlegendary/servo,wpgallih/servo,bfrohs/servo,evilpie/servo,rnestler/servo,caldwell/servo,sadmansk/servo,paulrouget/servo,bjwbell/servo,ConnorGBrewster/servo,notriddle/servo,karlito40/servo,evilpie/servo,jgraham/servo,CJ8664/servo,jimberlage/servo,dhananjay92/servo,aidanhs/servo,seanmonstar/servo,paulrouget/servo,evilpie/servo,mattnenterprise/servo,notriddle/servo,szeged/servo,jimberlage/servo,rentongzhang/servo,dagnir/servo,jgraham/servo,chotchki/servo,RenaudParis/servo,avadacatavra/servo,dvberkel/servo,peterjoel/servo,snf/servo,jimberlage/servo,SimonSapin/servo,WriterOfAlicrow/servo,mattnenterprise/servo,deokjinkim/servo,dati91/servo,ConnorGBrewster/servo,seanmonstar/servo,vks/servo,nnethercote/servo,zentner-kyle/servo,caldwell/servo,AnthonyBroadCrawford/servo,CJ8664/servo,nerith/servo,SimonSapin/servo,kindersung/servo,KiChjang/servo,mdibaiee/servo,KiChjang/servo,paulrouget/servo,ConnorGBrewster/servo,splav/servo,s142857/servo,nick-thompson/servo,j3parker/servo,DominoTree/servo,A-deLuna/servo,samfoo/servo,dhananjay92/servo,g-k/servo,walac/servo,nrc/servo,j3parker/servo,jlegendary/servo,CJ8664/servo,rixrix/servo,paulrouget/servo,GyrosOfWar/servo,Shraddha512/servo,zentner-kyle/servo,aidanhs/servo,DominoTree/servo,pyfisch/servo,GyrosOfWar/servo,Shraddha512/servo,g-k/servo,kindersung/servo,anthgur/servo,aidanhs/servo,nnethercote/servo,luniv/servo,nick-thompson/servo,dati91/servo,canaltinova/servo,fiji-flo/servo,DominoTree/servo,canaltinova/servo,avadacatavra/servo,dsandeephegde/servo,mt2d2/servo,GyrosOfWar/servo,mt2d2/servo,evilpie/servo,michaelwu/servo,akosel/servo,pyecs/servo,samfoo/servo,luniv/servo,pyfisch/servo,seanmonstar/servo,deokjinkim/servo,notriddle/servo,CJ8664/servo,pyfisch/servo,rixrix/servo,rentongzhang/servo,splav/servo,dati91/servo,saratang/servo,A-deLuna/servo,caldwell/servo,steveklabnik/servo,seanmonstar/servo,s142857/servo,dagnir/servo,tempbottle/servo,s142857/servo,pyfisch/servo,notriddle/servo,GyrosOfWar/servo,meh/servo,srbhklkrn/SERVOENGINE,karlito40/servo,saneyuki/servo,dati91/servo,tschneidereit/servo,dvberkel/servo,jdramani/servo,jimberlage/servo,s142857/servo,luniv/servo,upsuper/servo,GreenRecycleBin/servo,tempbottle/servo,peterjoel/servo,nrc/servo,bfrohs/servo,upsuper/servo,szeged/servo,anthgur/servo,dsandeephegde/servo,dvberkel/servo,rixrix/servo,codemac/servo,bfrohs/servo,A-deLuna/servo,jlegendary/servo,saneyuki/servo,tafia/servo,jdramani/servo,avadacatavra/servo,SimonSapin/servo,WriterOfAlicrow/servo,RenaudParis/servo,dvberkel/servo,rnestler/servo,tafia/servo,zhangjunlei26/servo,wartman4404/servo,evilpie/servo,KiChjang/servo,wartman4404/servo,wpgallih/servo,canaltinova/servo,avadacatavra/servo,dagnir/servo,emilio/servo,larsbergstrom/servo,saratang/servo,shrenikgala/servo,akosel/servo,vks/servo,mt2d2/servo,cbrewster/servo,peterjoel/servo,zhangjunlei26/servo,wartman4404/servo,ryancanhelpyou/servo,deokjinkim/servo,Adenilson/prototype-viewing-distance,bfrohs/servo,CJ8664/servo,aweinstock314/servo,hyowon/servo,steveklabnik/servo,pyecs/servo,saneyuki/servo,karlito40/servo,runarberg/servo,dhananjay92/servo,AnthonyBroadCrawford/servo,steveklabnik/servo,samfoo/servo,echochamber/servo,nrc/servo,zhangjunlei26/servo,canaltinova/servo,paulrouget/servo,szeged/servo,mattnenterprise/servo,jdramani/servo,CJ8664/servo,jgraham/servo,runarberg/servo,j3parker/servo,tafia/servo,paulrouget/servo,mbrubeck/servo,echochamber/servo,wpgallih/servo,karlito40/servo,indykish/servo,avadacatavra/servo,mukilan/servo,nrc/servo,zentner-kyle/servo,seanmonstar/servo,Adenilson/prototype-viewing-distance,runarberg/servo,mt2d2/servo,nick-thompson/servo,runarberg/servo,dhananjay92/servo,nerith/servo,ConnorGBrewster/servo,WriterOfAlicrow/servo,WriterOfAlicrow/servo,eddyb/servo,GreenRecycleBin/servo,GreenRecycleBin/servo,saratang/servo,larsbergstrom/servo,pyfisch/servo,jlegendary/servo,aidanhs/servo,jdramani/servo,splav/servo,shrenikgala/servo,indykish/servo,mt2d2/servo,tschneidereit/servo,walac/servo,eddyb/servo,larsbergstrom/servo,shrenikgala/servo,vks/servo,vks/servo,mdibaiee/servo,Adenilson/prototype-viewing-distance,steveklabnik/servo,rentongzhang/servo,Adenilson/prototype-viewing-distance,KiChjang/servo,ConnorGBrewster/servo,deokjinkim/servo,jlegendary/servo,zentner-kyle/servo,larsbergstrom/servo,saneyuki/servo,michaelwu/servo,j3parker/servo,dmarcos/servo,meh/servo,DominoTree/servo,splav/servo,AnthonyBroadCrawford/servo,AnthonyBroadCrawford/servo,eddyb/servo,saneyuki/servo,michaelwu/servo,rixrix/servo,emilio/servo,mbrubeck/servo,g-k/servo,youprofit/servo,szeged/servo,DominoTree/servo,jdramani/servo,canaltinova/servo,srbhklkrn/SERVOENGINE,anthgur/servo,luniv/servo,echochamber/servo,larsbergstrom/servo,rnestler/servo,dsandeephegde/servo,GyrosOfWar/servo,peterjoel/servo,hyowon/servo,thiagopnts/servo,echochamber/servo,evilpie/servo,juzer10/servo,peterjoel/servo,wartman4404/servo,peterjoel/servo,indykish/servo,karlito40/servo,upsuper/servo,froydnj/servo,huonw/servo,splav/servo,saneyuki/servo,ryancanhelpyou/servo,brendandahl/servo,aidanhs/servo,shrenikgala/servo,tschneidereit/servo,sadmansk/servo,eddyb/servo,fiji-flo/servo,michaelwu/servo,RenaudParis/servo,bjwbell/servo,indykish/servo,nrc/servo,mattnenterprise/servo,akosel/servo,cbrewster/servo,cbrewster/servo,zentner-kyle/servo,zhangjunlei26/servo,upsuper/servo,mbrubeck/servo,ryancanhelpyou/servo,pgonda/servo,paulrouget/servo,mbrubeck/servo,pgonda/servo,srbhklkrn/SERVOENGINE,mattnenterprise/servo,larsbergstrom/servo,youprofit/servo,boghison/servo,KiChjang/servo,tschneidereit/servo,nick-thompson/servo,luniv/servo,saneyuki/servo,indykish/servo,mukilan/servo,fiji-flo/servo,mukilan/servo,nrc/servo,rentongzhang/servo,mbrubeck/servo,anthgur/servo,emilio/servo,fiji-flo/servo,jgraham/servo,echochamber/servo,froydnj/servo,indykish/servo,dagnir/servo,GyrosOfWar/servo,ruud-v-a/servo,saratang/servo,notriddle/servo,huonw/servo,steveklabnik/servo,echochamber/servo,walac/servo,dagnir/servo,notriddle/servo,dagnir/servo,szeged/servo,shrenikgala/servo,brendandahl/servo,youprofit/servo,jimberlage/servo,thiagopnts/servo,caldwell/servo,canaltinova/servo,caldwell/servo,bjwbell/servo,mattnenterprise/servo,mukilan/servo,zentner-kyle/servo,avadacatavra/servo,nick-thompson/servo,s142857/servo,Shraddha512/servo,saratang/servo,dhananjay92/servo,GreenRecycleBin/servo,brendandahl/servo,CJ8664/servo,huonw/servo,splav/servo,fiji-flo/servo,upsuper/servo,emilio/servo,kindersung/servo,aweinstock314/servo,thiagopnts/servo,pyecs/servo,seanmonstar/servo,dsandeephegde/servo,deokjinkim/servo,huonw/servo,Shraddha512/servo,emilio/servo,dagnir/servo,zhangjunlei26/servo,s142857/servo,kindersung/servo,WriterOfAlicrow/servo,pyecs/servo,AnthonyBroadCrawford/servo,szeged/servo,ruud-v-a/servo,ruud-v-a/servo,nrc/servo,nnethercote/servo,g-k/servo,dvberkel/servo,pgonda/servo,fiji-flo/servo,boghison/servo,ruud-v-a/servo,karlito40/servo,ConnorGBrewster/servo,GreenRecycleBin/servo,codemac/servo,dmarcos/servo,mattnenterprise/servo,emilio/servo,meh/servo,jimberlage/servo,KiChjang/servo,codemac/servo,GyrosOfWar/servo,tempbottle/servo,peterjoel/servo,mdibaiee/servo,bjwbell/servo,CJ8664/servo,vks/servo,splav/servo,nnethercote/servo,wpgallih/servo,tschneidereit/servo,rentongzhang/servo,codemac/servo,RenaudParis/servo,Shraddha512/servo,RenaudParis/servo,emilio/servo,j3parker/servo,nick-thompson/servo,akosel/servo,akosel/servo,GreenRecycleBin/servo,A-deLuna/servo,dsandeephegde/servo,echochamber/servo,nnethercote/servo,zentner-kyle/servo,larsbergstrom/servo,fiji-flo/servo,pgonda/servo,nerith/servo,runarberg/servo,aweinstock314/servo,pgonda/servo,samfoo/servo,Shraddha512/servo,rnestler/servo,michaelwu/servo,peterjoel/servo,bjwbell/servo,ryancanhelpyou/servo,nnethercote/servo,evilpie/servo,RenaudParis/servo,nick-thompson/servo,dati91/servo,juzer10/servo,notriddle/servo,SimonSapin/servo,anthgur/servo,walac/servo,luniv/servo,tschneidereit/servo,rixrix/servo,nnethercote/servo,karlito40/servo,szeged/servo,snf/servo,bfrohs/servo,KiChjang/servo,dsandeephegde/servo,jgraham/servo,DominoTree/servo,thiagopnts/servo,jlegendary/servo,mukilan/servo,youprofit/servo,michaelwu/servo,meh/servo,wpgallih/servo,juzer10/servo,canaltinova/servo,pyecs/servo,bfrohs/servo,DominoTree/servo,mdibaiee/servo,cbrewster/servo,ruud-v-a/servo,vks/servo,rixrix/servo,pyfisch/servo,GreenRecycleBin/servo,akosel/servo,snf/servo,j3parker/servo,szeged/servo,rixrix/servo,dati91/servo,froydnj/servo,pyecs/servo,fiji-flo/servo,dati91/servo,notriddle/servo,mbrubeck/servo,pyfisch/servo,dvberkel/servo,mdibaiee/servo,sadmansk/servo,dvberkel/servo,indykish/servo,froydnj/servo,wpgallih/servo,emilio/servo,jimberlage/servo,chotchki/servo,dsandeephegde/servo,runarberg/servo,hyowon/servo,samfoo/servo,notriddle/servo,SimonSapin/servo,A-deLuna/servo,rnestler/servo,deokjinkim/servo,hyowon/servo,rnestler/servo,shrenikgala/servo,s142857/servo,deokjinkim/servo,codemac/servo,pyfisch/servo,sadmansk/servo,zhangjunlei26/servo,pyecs/servo,sadmansk/servo,srbhklkrn/SERVOENGINE,evilpie/servo,dmarcos/servo,snf/servo,upsuper/servo,snf/servo,Adenilson/prototype-viewing-distance,thiagopnts/servo,g-k/servo,splav/servo,GreenRecycleBin/servo,Adenilson/prototype-viewing-distance,thiagopnts/servo,boghison/servo,juzer10/servo,huonw/servo,canaltinova/servo,hyowon/servo,samfoo/servo,wartman4404/servo,saratang/servo,nnethercote/servo,g-k/servo,mbrubeck/servo,pgonda/servo,KiChjang/servo,tafia/servo,caldwell/servo,zhangjunlei26/servo,mt2d2/servo,aweinstock314/servo,jimberlage/servo,aidanhs/servo,anthgur/servo,jlegendary/servo,chotchki/servo,larsbergstrom/servo,jgraham/servo,Shraddha512/servo,brendandahl/servo,chotchki/servo