Audit and reduce unstable usage in script
Audit and reduce unstable usage in script

Reasons behind existing unstable features:

alloc:

 - `Rc.make_unique()` _everywhere_

core:

 - `intrinsics::discriminant_value` for a small optimization. Not sure what's happening here

hash:

 - `Hasher.write_u16` (recently redesigned)

tempbottle/servo,sadmansk/servo,CJ8664/servo,eddyb/servo,nerith/servo,anthgur/servo,splav/servo,pgonda/servo,dsandeephegde/servo,runarberg/servo,paulrouget/servo,g-k/servo,mattnenterprise/servo,sadmansk/servo,jdramani/servo,dvberkel/servo,walac/servo,s142857/servo,saratang/servo,youprofit/servo,szeged/servo,avadacatavra/servo,boghison/servo,saneyuki/servo,dati91/servo,meh/servo,thiagopnts/servo,DominoTree/servo,dvberkel/servo,nerith/servo,rnestler/servo,samfoo/servo,WriterOfAlicrow/servo,nerith/servo,A-deLuna/servo,emilio/servo,akosel/servo,wartman4404/servo,fiji-flo/servo,tschneidereit/servo,codemac/servo,hyowon/servo,tafia/servo,pgonda/servo,ryancanhelpyou/servo,saratang/servo,dhananjay92/servo,j3parker/servo,mdibaiee/servo,nick-thompson/servo,rnestler/servo,anthgur/servo,szeged/servo,KiChjang/servo,jgraham/servo,saratang/servo,youprofit/servo,CJ8664/servo,jimberlage/servo,emilio/servo,nrc/servo,bjwbell/servo,SimonSapin/servo,nick-thompson/servo,nnethercote/servo,paulrouget/servo,dvberkel/servo,caldwell/servo,RenaudParis/servo,nnethercote/servo,peterjoel/servo,larsbergstrom/servo,wartman4404/servo,dsandeephegde/servo,GyrosOfWar/servo,pyfisch/servo,ConnorGBrewster/servo,mbrubeck/servo,boghison/servo,samfoo/servo,aidanhs/servo,brendandahl/servo,szeged/servo,jdramani/servo,saneyuki/servo,splav/servo,cbrewster/servo,g-k/servo,dati91/servo,KiChjang/servo,wartman4404/servo,SimonSapin/servo,j3parker/servo,eddyb/servo,s142857/servo,rentongzhang/servo,nrc/servo,s142857/servo,splav/servo,tempbottle/servo,dvberkel/servo,steveklabnik/servo,DominoTree/servo,jlegendary/servo,pyfisch/servo,larsbergstrom/servo,emilio/servo,mbrubeck/servo,sadmansk/servo,nrc/servo,notriddle/servo,thiagopnts/servo,bjwbell/servo,hyowon/servo,fiji-flo/servo,avadacatavra/servo,karlito40/servo,nnethercote/servo,nerith/servo,mt2d2/servo,avadacatavra/servo,mbrubeck/servo,dvberkel/servo,pyfisch/servo,sadmansk/servo,eddyb/servo,karlito40/servo,dsandeephegde/servo,dati91/servo,eddyb/servo,AnthonyBroadCrawford/servo,WriterOfAlicrow/servo,szeged/servo,tafia/servo,ConnorGBrewster/servo,RenaudParis/servo,splav/servo,ryancanhelpyou/servo,SimonSapin/servo,aidanhs/servo,g-k/servo,larsbergstrom/servo,dagnir/servo,deokjinkim/servo,dati91/servo,bjwbell/servo,szeged/servo,wartman4404/servo,vks/servo,A-deLuna/servo,DominoTree/servo,larsbergstrom/servo,runarberg/servo,deokjinkim/servo,mdibaiee/servo,steveklabnik/servo,upsuper/servo,pyfisch/servo,walac/servo,aweinstock314/servo,upsuper/servo,notriddle/servo,g-k/servo,upsuper/servo,canaltinova/servo,mattnenterprise/servo,mattnenterprise/servo,AnthonyBroadCrawford/servo,karlito40/servo,aidanhs/servo,AnthonyBroadCrawford/servo,j3parker/servo,jlegendary/servo,jlegendary/servo,codemac/servo,nrc/servo,CJ8664/servo,youprofit/servo,A-deLuna/servo,szeged/servo,mattnenterprise/servo,fiji-flo/servo,KiChjang/servo,splav/servo,RenaudParis/servo,hyowon/servo,deokjinkim/servo,mt2d2/servo,KiChjang/servo,cbrewster/servo,GyrosOfWar/servo,tempbottle/servo,KiChjang/servo,rnestler/servo,s142857/servo,saneyuki/servo,paulrouget/servo,runarberg/servo,canaltinova/servo,rentongzhang/servo,walac/servo,codemac/servo,thiagopnts/servo,emilio/servo,steveklabnik/servo,canaltinova/servo,tafia/servo,anthgur/servo,kindersung/servo,KiChjang/servo,jlegendary/servo,dati91/servo,s142857/servo,AnthonyBroadCrawford/servo,GyrosOfWar/servo,nick-thompson/servo,karlito40/servo,fiji-flo/servo,codemac/servo,jimberlage/servo,j3parker/servo,vks/servo,cbrewster/servo,ConnorGBrewster/servo,pyecs/servo,avadacatavra/servo,huonw/servo,mbrubeck/servo,tempbottle/servo,caldwell/servo,aweinstock314/servo,bjwbell/servo,jimberlage/servo,nnethercote/servo,avadacatavra/servo,pgonda/servo,j3parker/servo,dagnir/servo,jgraham/servo,sadmansk/servo,larsbergstrom/servo,aweinstock314/servo,jgraham/servo,dhananjay92/servo,jdramani/servo,caldwell/servo,KiChjang/servo,deokjinkim/servo,larsbergstrom/servo,emilio/servo,nick-thompson/servo,emilio/servo,eddyb/servo,hyowon/servo,mattnenterprise/servo,WriterOfAlicrow/servo,nnethercote/servo,jdramani/servo,tschneidereit/servo,mt2d2/servo,aweinstock314/servo,RenaudParis/servo,pyecs/servo,peterjoel/servo,brendandahl/servo,nnethercote/servo,g-k/servo,youprofit/servo,paulrouget/servo,mt2d2/servo,vks/servo,cbrewster/servo,nnethercote/servo,AnthonyBroadCrawford/servo,CJ8664/servo,hyowon/servo,canaltinova/servo,saratang/servo,peterjoel/servo,dsandeephegde/servo,pgonda/servo,wartman4404/servo,mbrubeck/servo,saneyuki/servo,eddyb/servo,brendandahl/servo,s142857/servo,pyecs/servo,kindersung/servo,tschneidereit/servo,mdibaiee/servo,zentner-kyle/servo,szeged/servo,ryancanhelpyou/servo,RenaudParis/servo,caldwell/servo,thiagopnts/servo,brendandahl/servo,mdibaiee/servo,sadmansk/servo,caldwell/servo,fiji-flo/servo,youprofit/servo,dagnir/servo,codemac/servo,cbrewster/servo,saratang/servo,nnethercote/servo,bjwbell/servo,mdibaiee/servo,szeged/servo,codemac/servo,jlegendary/servo,anthgur/servo,zentner-kyle/servo,fiji-flo/servo,huonw/servo,CJ8664/servo,paulrouget/servo,ConnorGBrewster/servo,walac/servo,jimberlage/servo,rentongzhang/servo,nerith/servo,bjwbell/servo,notriddle/servo,deokjinkim/servo,samfoo/servo,paulrouget/servo,SimonSapin/servo,boghison/servo,SimonSapin/servo,pyecs/servo,emilio/servo,steveklabnik/servo,canaltinova/servo,DominoTree/servo,notriddle/servo,samfoo/servo,tschneidereit/servo,ryancanhelpyou/servo,paulrouget/servo,hyowon/servo,nrc/servo,meh/servo,mbrubeck/servo,dsandeephegde/servo,paulrouget/servo,wartman4404/servo,notriddle/servo,nrc/servo,huonw/servo,GyrosOfWar/servo,notriddle/servo,GyrosOfWar/servo,splav/servo,zentner-kyle/servo,akosel/servo,caldwell/servo,meh/servo,tempbottle/servo,dhananjay92/servo,WriterOfAlicrow/servo,rnestler/servo,boghison/servo,nick-thompson/servo,notriddle/servo,dsandeephegde/servo,saratang/servo,ConnorGBrewster/servo,saneyuki/servo,boghison/servo,KiChjang/servo,szeged/servo,nick-thompson/servo,SimonSapin/servo,splav/servo,ryancanhelpyou/servo,dhananjay92/servo,peterjoel/servo,mbrubeck/servo,dagnir/servo,SimonSapin/servo,youprofit/servo,nnethercote/servo,dati91/servo,caldwell/servo,tschneidereit/servo,jimberlage/servo,eddyb/servo,anthgur/servo,pgonda/servo,rnestler/servo,mt2d2/servo,zentner-kyle/servo,notriddle/servo,boghison/servo,pyfisch/servo,jgraham/servo,larsbergstrom/servo,tafia/servo,cbrewster/servo,larsbergstrom/servo,A-deLuna/servo,huonw/servo,rnestler/servo,jgraham/servo,j3parker/servo,upsuper/servo,aweinstock314/servo,ryancanhelpyou/servo,aweinstock314/servo,boghison/servo,nnethercote/servo,emilio/servo,upsuper/servo,rentongzhang/servo,steveklabnik/servo,DominoTree/servo,runarberg/servo,canaltinova/servo,RenaudParis/servo,karlito40/servo,tafia/servo,nerith/servo,fiji-flo/servo,brendandahl/servo,pyfisch/servo,pyecs/servo,KiChjang/servo,peterjoel/servo,WriterOfAlicrow/servo,g-k/servo,saneyuki/servo,runarberg/servo,dhananjay92/servo,dagnir/servo,walac/servo,g-k/servo,jdramani/servo,jimberlage/servo,anthgur/servo,thiagopnts/servo,runarberg/servo,pgonda/servo,avadacatavra/servo,SimonSapin/servo,canaltinova/servo,walac/servo,splav/servo,ConnorGBrewster/servo,splav/servo,pyfisch/servo,meh/servo,KiChjang/servo,brendandahl/servo,emilio/servo,peterjoel/servo,szeged/servo,kindersung/servo,saneyuki/servo,upsuper/servo,tschneidereit/servo,vks/servo,codemac/servo,mattnenterprise/servo,A-deLuna/servo,mattnenterprise/servo,GyrosOfWar/servo,brendandahl/servo,DominoTree/servo,vks/servo,dagnir/servo,thiagopnts/servo,aidanhs/servo,dsandeephegde/servo,upsuper/servo,aidanhs/servo,akosel/servo,kindersung/servo,wartman4404/servo,mt2d2/servo,DominoTree/servo,jimberlage/servo,rentongzhang/servo,karlito40/servo,canaltinova/servo,akosel/servo,vks/servo,eddyb/servo,A-deLuna/servo,jlegendary/servo,meh/servo,dati91/servo,cbrewster/servo,j3parker/servo,s142857/servo,dati91/servo,ConnorGBrewster/servo,GyrosOfWar/servo,cbrewster/servo,rnestler/servo,peterjoel/servo,mdibaiee/servo,ConnorGBrewster/servo,ryancanhelpyou/servo,WriterOfAlicrow/servo,CJ8664/servo,pgonda/servo,steveklabnik/servo,DominoTree/servo,CJ8664/servo,saneyuki/servo,dhananjay92/servo,peterjoel/servo,huonw/servo,aidanhs/servo,tempbottle/servo,pyfisch/servo,WriterOfAlicrow/servo,kindersung/servo,meh/servo,karlito40/servo,dvberkel/servo,rentongzhang/servo,aweinstock314/servo,DominoTree/servo,tafia/servo,zentner-kyle/servo,mattnenterprise/servo,jgraham/servo,pyfisch/servo,pyecs/servo,samfoo/servo,anthgur/servo,rentongzhang/servo,jgraham/servo,peterjoel/servo,AnthonyBroadCrawford/servo,emilio/servo,RenaudParis/servo,samfoo/servo,anthgur/servo,mdibaiee/servo,vks/servo,jimberlage/servo,deokjinkim/servo,dsandeephegde/servo,larsbergstrom/servo,avadacatavra/servo,akosel/servo,kindersung/servo,upsuper/servo,steveklabnik/servo,thiagopnts/servo,jimberlage/servo,splav/servo,notriddle/servo,DominoTree/servo,CJ8664/servo,fiji-flo/servo,sadmansk/servo,nrc/servo,akosel/servo,jdramani/servo,aidanhs/servo,nick-thompson/servo,dagnir/servo,samfoo/servo,deokjinkim/servo,bjwbell/servo,saneyuki/servo,pyecs/servo,kindersung/servo,larsbergstrom/servo,mbrubeck/servo,meh/servo,akosel/servo,runarberg/servo,A-deLuna/servo,avadacatavra/servo,jlegendary/servo,mt2d2/servo,peterjoel/servo,AnthonyBroadCrawford/servo,jdramani/servo,huonw/servo,zentner-kyle/servo,youprofit/servo,tempbottle/servo,sadmansk/servo,paulrouget/servo,rnestler/servo,huonw/servo,walac/servo,saneyuki/servo,pyfisch/servo,dhananjay92/servo,hyowon/servo,saratang/servo,thiagopnts/servo,dvberkel/servo,notriddle/servo,paulrouget/servo,zentner-kyle/servo,tafia/servo,nerith/servo,tschneidereit/servo