Auto merge of #6996 - frewsxcv:prevent-tidy-crash, r=jdm
Auto merge of #6996 - frewsxcv:prevent-tidy-crash, r=jdm

Prevent flake8 from crashing tidy

If someone were to write:

    def hello() :
        print "hello world"

flake8 would warn:

    stdin:54:45: E203 whitespace before ':'

Normally there are only three colons in a flake8 error message, but this
one has four, which causes issue with this line:

    _, line_num, _, message = error.split(":")

...causing this error:

    ValueError: too many values to unpack

This commit updates the `str.split` call to utilize the `maxsplit`
parameter to prevent this error from occurring.

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