rewrite parents.t to not use infix:<eqv> with Mu as argument
rewrite parents.t to not use infix:<eqv> with Mu as argument

perl6/roast,b2gills/roast,bitrauser/roast,zostay/roast,niner/roast,laben/roast,skids/roast,skids/roast,dogbert17/roast,bitrauser/roast,niner/roast,b2gills/roast,niner/roast,cygx/roast,skids/roast,dogbert17/roast,b2gills/roast,laben/roast,cygx/roast,dankogai/roast,dankogai/roast,zostay/roast,laben/roast,dankogai/roast,zostay/roast,cygx/roast