Work around "this expression will panic at run-time" warnings
Work around "this expression will panic at run-time" warnings

CC https://github.com/rust-lang/rust/issues/45850

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