Auto merge of #16176 - servo:jdm-patch-1, r=mbrubeck
Auto merge of #16176 - servo:jdm-patch-1, r=mbrubeck

Halve number of processes for test runs.

Let's see if this makes the intermittent failure situation improve!

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