dont run ls and make sure diff aborts if it fails
dont run ls and make sure diff aborts if it fails

ChickenRunjyd/klee-uclibc,czankel/xtensa-uclibc,OpenInkpot-archive/iplinux-uclibc,ddcc/klee-uclibc-0.9.33.2,czankel/xtensa-uclibc,m-labs/uclibc-lm32,waweber/uclibc-clang,majek/uclibc-vx32,ndmsystems/uClibc,waweber/uclibc-clang,hjl-tools/uClibc,wbx-github/uclibc-ng,foss-for-synopsys-dwc-arc-processors/uClibc,ffainelli/uClibc,atgreen/uClibc-moxie,hjl-tools/uClibc,gittup/uClibc,brgl/uclibc-ng,atgreen/uClibc-moxie,skristiansson/uClibc-or1k,ChickenRunjyd/klee-uclibc,wbx-github/uclibc-ng,OpenInkpot-archive/iplinux-uclibc,skristiansson/uClibc-or1k,majek/uclibc-vx32,atgreen/uClibc-moxie,ffainelli/uClibc,kraj/uclibc-ng,ysat0/uClibc,majek/uclibc-vx32,ddcc/klee-uclibc-0.9.33.2,ysat0/uClibc,m-labs/uclibc-lm32,ndmsystems/uClibc,wbx-github/uclibc-ng,hjl-tools/uClibc,brgl/uclibc-ng,m-labs/uclibc-lm32,klee/klee-uclibc,brgl/uclibc-ng,mephi42/uClibc,m-labs/uclibc-lm32,gittup/uClibc,OpenInkpot-archive/iplinux-uclibc,mephi42/uClibc,groundwater/uClibc,skristiansson/uClibc-or1k,ffainelli/uClibc,waweber/uclibc-clang,klee/klee-uclibc,czankel/xtensa-uclibc,foss-xtensa/uClibc,kraj/uclibc-ng,groundwater/uClibc,groundwater/uClibc,ndmsystems/uClibc,brgl/uclibc-ng,gittup/uClibc,ChickenRunjyd/klee-uclibc,klee/klee-uclibc,foss-xtensa/uClibc,czankel/xtensa-uclibc,kraj/uclibc-ng,hjl-tools/uClibc,OpenInkpot-archive/iplinux-uclibc,mephi42/uClibc,ChickenRunjyd/klee-uclibc,hwoarang/uClibc,hwoarang/uClibc,skristiansson/uClibc-or1k,foss-for-synopsys-dwc-arc-processors/uClibc,kraj/uclibc-ng,atgreen/uClibc-moxie,groundwater/uClibc,wbx-github/uclibc-ng,hwoarang/uClibc,waweber/uclibc-clang,majek/uclibc-vx32,hjl-tools/uClibc,mephi42/uClibc,hwoarang/uClibc,groundwater/uClibc,ddcc/klee-uclibc-0.9.33.2,foss-xtensa/uClibc,gittup/uClibc,foss-xtensa/uClibc,klee/klee-uclibc,ffainelli/uClibc,kraj/uClibc,kraj/uClibc,ysat0/uClibc,ffainelli/uClibc,foss-for-synopsys-dwc-arc-processors/uClibc,kraj/uClibc,ysat0/uClibc,ddcc/klee-uclibc-0.9.33.2,kraj/uClibc,foss-for-synopsys-dwc-arc-processors/uClibc,ndmsystems/uClibc