Improve is-run()
Improve is-run()

Default to empty Str test for err/out and 0 exit code

lucasbuchala/rakudo,usev6/rakudo,labster/rakudo,MasterDuke17/rakudo,tony-o/rakudo,Gnouc/rakudo,nbrown/rakudo,nbrown/rakudo,MasterDuke17/rakudo,nbrown/rakudo,nbrown/rakudo,tbrowder/rakudo,MasterDuke17/rakudo,rakudo/rakudo,Gnouc/rakudo,softmoth/rakudo,salortiz/rakudo,softmoth/rakudo,Gnouc/rakudo,tbrowder/rakudo,softmoth/rakudo,lucasbuchala/rakudo,rakudo/rakudo,raydiak/rakudo,awwaiid/rakudo,salortiz/rakudo,labster/rakudo,raydiak/rakudo,tony-o/rakudo,salortiz/rakudo,lucasbuchala/rakudo,nbrown/rakudo,MasterDuke17/rakudo,tony-o/rakudo,salortiz/rakudo,salortiz/rakudo,softmoth/rakudo,rakudo/rakudo,rakudo/rakudo,raydiak/rakudo,salortiz/rakudo,Gnouc/rakudo,rakudo/rakudo,MasterDuke17/rakudo,raydiak/rakudo,labster/rakudo,awwaiid/rakudo,lucasbuchala/rakudo,softmoth/rakudo,rakudo/rakudo,awwaiid/rakudo,labster/rakudo,labster/rakudo,usev6/rakudo,usev6/rakudo,tony-o/rakudo,tbrowder/rakudo,tbrowder/rakudo,usev6/rakudo,Gnouc/rakudo,MasterDuke17/rakudo,tbrowder/rakudo,nbrown/rakudo,tbrowder/rakudo,tony-o/rakudo,lucasbuchala/rakudo,awwaiid/rakudo,awwaiid/rakudo,labster/rakudo,tony-o/rakudo,usev6/rakudo,Gnouc/rakudo