Build: don't pretend everything is okay when the Stitcher fails (#321)
Build: don't pretend everything is okay when the Stitcher fails (#321)

ceylon/ceylon.language,unratito/ceylon.language,jvasileff/ceylon.language,lucaswerkmeister/ceylon.language,lucaswerkmeister/ceylon.language,jvasileff/ceylon.language,unratito/ceylon.language,ceylon/ceylon.language