Cache backtraces rather than running a new backtrace every time Exception.backtrace is called.  Without this you can get different results on subsequent calls to the same exception, even if it has not been thrown again.
Cache backtraces rather than running a new backtrace every time
Exception.backtrace is called.  Without this you can get different
results on subsequent calls to the same exception, even if it
has not been thrown again.

usev6/rakudo,softmoth/rakudo,b2gills/rakudo,ab5tract/rakudo,b2gills/rakudo,nbrown/rakudo,sjn/rakudo,azawawi/rakudo,samcv/rakudo,skids/rakudo,rakudo/rakudo,tony-o/rakudo,raydiak/rakudo,lucasbuchala/rakudo,nunorc/rakudo,raydiak/rakudo,azawawi/rakudo,rakudo/rakudo,Gnouc/rakudo,MasterDuke17/rakudo,tony-o/rakudo,cygx/rakudo,MasterDuke17/rakudo,nunorc/rakudo,ungrim97/rakudo,paultcochrane/rakudo,salortiz/rakudo,lucasbuchala/rakudo,nbrown/rakudo,Gnouc/rakudo,ungrim97/rakudo,zostay/rakudo,samcv/rakudo,raydiak/rakudo,sergot/rakudo,ab5tract/rakudo,ugexe/rakudo,azawawi/rakudo,salortiz/rakudo,usev6/rakudo,softmoth/rakudo,cognominal/rakudo,jonathanstowe/rakudo,usev6/rakudo,azawawi/rakudo,labster/rakudo,zostay/rakudo,sergot/rakudo,rakudo/rakudo,Leont/rakudo,sergot/rakudo,zhuomingliang/rakudo,softmoth/rakudo,dankogai/rakudo,awwaiid/rakudo,labster/rakudo,cognominal/rakudo,tbrowder/rakudo,ungrim97/rakudo,lucasbuchala/rakudo,salortiz/rakudo,nbrown/rakudo,awwaiid/rakudo,ab5tract/rakudo,paultcochrane/rakudo,nunorc/rakudo,tony-o/rakudo,dankogai/rakudo,rakudo/rakudo,awwaiid/rakudo,usev6/rakudo,softmoth/rakudo,usev6/rakudo,tony-o/rakudo,paultcochrane/rakudo,salortiz/rakudo,cognominal/rakudo,b2gills/rakudo,laben/rakudo,Gnouc/rakudo,tbrowder/rakudo,ugexe/rakudo,sergot/rakudo,cygx/rakudo,ugexe/rakudo,Gnouc/rakudo,skids/rakudo,tbrowder/rakudo,laben/rakudo,ungrim97/rakudo,softmoth/rakudo,zhuomingliang/rakudo,jonathanstowe/rakudo,nbrown/rakudo,nbrown/rakudo,azawawi/rakudo,labster/rakudo,jonathanstowe/rakudo,sjn/rakudo,LLFourn/rakudo,dankogai/rakudo,sjn/rakudo,tbrowder/rakudo,salortiz/rakudo,Leont/rakudo,b2gills/rakudo,zhuomingliang/rakudo,cygx/rakudo,dankogai/rakudo,awwaiid/rakudo,rakudo/rakudo,samcv/rakudo,Gnouc/rakudo,samcv/rakudo,skids/rakudo,LLFourn/rakudo,rakudo/rakudo,tony-o/rakudo,zostay/rakudo,samcv/rakudo,MasterDuke17/rakudo,cygx/rakudo,LLFourn/rakudo,paultcochrane/rakudo,lucasbuchala/rakudo,awwaiid/rakudo,salortiz/rakudo,sjn/rakudo,b2gills/rakudo,jonathanstowe/rakudo,skids/rakudo,Gnouc/rakudo,tbrowder/rakudo,tbrowder/rakudo,raydiak/rakudo,MasterDuke17/rakudo,dankogai/rakudo,tony-o/rakudo,LLFourn/rakudo,Leont/rakudo,MasterDuke17/rakudo,MasterDuke17/rakudo,jonathanstowe/rakudo,sjn/rakudo,zhuomingliang/rakudo,laben/rakudo,labster/rakudo,skids/rakudo,ab5tract/rakudo,lucasbuchala/rakudo,cognominal/rakudo,ab5tract/rakudo,cognominal/rakudo,labster/rakudo,laben/rakudo,ungrim97/rakudo,nbrown/rakudo,ugexe/rakudo,zostay/rakudo,Leont/rakudo,ugexe/rakudo,nunorc/rakudo,paultcochrane/rakudo,LLFourn/rakudo,labster/rakudo,cygx/rakudo