Enable nightly feature for serde in style
Enable nightly feature for serde in style

Some external dependencies (at least webrender_traits) present only in servo
and not in geckolib use it already and this prevents Cargo to reuse build
artifacts depending on serde between the two targets.

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