typed exceptions for PRE/POST failures
typed exceptions for PRE/POST failures

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