Give decent error for | used outside of arglist.
Give decent error for | used outside of arglist.

Before we just called it out as a call to a non-existing prefix:<|>
sub, which was LTA.

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