removed mutation of global state, changed filter addition in WarningsRecorder
removed mutation of global state, changed filter addition in WarningsRecorder

tareqalayan/pytest,malinoff/pytest,MichaelAquilina/pytest,jaraco/pytest,pfctdayelise/pytest,hpk42/pytest,ropez/pytest,txomon/pytest,hpk42/pytest,vodik/pytest,vmalloc/dessert,JonathonSonesen/pytest,nicoddemus/pytest,The-Compiler/pytest,lukas-bednar/pytest,skylarjhdownes/pytest,userzimmermann/pytest,vodik/pytest,MengJueM/pytest,hackebrot/pytest,RonnyPfannschmidt/pytest,Bachmann1234/pytest,etataurov/pytest,nicoddemus/pytest,userzimmermann/pytest,markshao/pytest,rmfitzpatrick/pytest,alfredodeza/pytest,lukas-bednar/pytest,ddboline/pytest,omarkohl/pytest,tomviner/pytest,tomviner/pytest,pytest-dev/pytest,JonathonSonesen/pytest,davidszotten/pytest,MengJueM/pytest,Akasurde/pytest,ropez/pytest,tgoodlet/pytest,The-Compiler/pytest,flub/pytest,omarkohl/pytest,Bachmann1234/pytest,eli-b/pytest