auto merge of #2349 : zwarich/servo/reftest-print-diff, r=larsbergstrom
auto merge of #2349 : zwarich/servo/reftest-print-diff, r=larsbergstrom

Having to match the numbered results in /tmp with the failing tests was bothering me, and I figured it would be better to print the path with the failure.

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