Use a tuple in the error message (silences a pyflakes warning)
Use a tuple in the error message (silences a pyflakes warning)

sandhujasmine/conda-build,rmcgibbo/conda-build,dan-blanchard/conda-build,mwcraig/conda-build,frol/conda-build,ilastik/conda-build,rmcgibbo/conda-build,sandhujasmine/conda-build,dan-blanchard/conda-build,dan-blanchard/conda-build,frol/conda-build,ilastik/conda-build,rmcgibbo/conda-build,mwcraig/conda-build,mwcraig/conda-build,ilastik/conda-build,frol/conda-build,sandhujasmine/conda-build