I filed this upstream here: https://github.com/googlei18n/fontmake/issues/445
- Bug#900777: fontmake: fails to rebuild fonts-firacode... Fabian Greffrath
- Bug#900777: fontmake: fails to rebuild fonts-fir... James Godfrey-Kittle
I filed this upstream here: https://github.com/googlei18n/fontmake/issues/445