Fix test runner to catch segfaults
Fix test runner to catch segfaults

They were silently passing due to a change in the semantics
of the Sh.py nee PBS library we use.
delcypher/Halide,delcypher/Halide,mcanthony/Halide,rodrigob/Halide,dougkwan/Halide,mikeseven/Halide,dan-tull/Halide,aam/Halide,dan-tull/Halide,kgnk/Halide,dan-tull/Halide,gchauras/Halide,smxlong/Halide,adasworks/Halide,ayanazmat/Halide,mcanthony/Halide,psuriana/Halide,myrtleTree33/Halide,delcypher/Halide,mcanthony/Halide,kgnk/Halide,myrtleTree33/Halide,jiawen/Halide,dan-tull/Halide,ronen/Halide,fengzhyuan/Halide,aam/Halide,adasworks/Halide,aam/Halide,ayanazmat/Halide,ayanazmat/Halide,tdenniston/Halide,rodrigob/Halide,smxlong/Halide,smxlong/Halide,tdenniston/Halide,dougkwan/Halide,damienfir/Halide,lglucin/Halide,mcanthony/Halide,rodrigob/Halide,smxlong/Halide,delcypher/Halide,damienfir/Halide,damienfir/Halide,tdenniston/Halide,gchauras/Halide,adasworks/Halide,mikeseven/Halide,rodrigob/Halide,fengzhyuan/Halide,fengzhyuan/Halide,myrtleTree33/Halide,aam/Halide,ronen/Halide,kgnk/Halide,gchauras/Halide,delcypher/Halide,dan-tull/Halide,mcanthony/Halide,kgnk/Halide,kenkuang1213/Halide,gchauras/Halide,kenkuang1213/Halide,psuriana/Halide,gchauras/Halide,kenkuang1213/Halide,kgnk/Halide,kgnk/Halide,mcanthony/Halide,rodrigob/Halide,ronen/Halide,damienfir/Halide,dougkwan/Halide,aam/Halide,jiawen/Halide,ayanazmat/Halide,fengzhyuan/Halide,smxlong/Halide,dan-tull/Halide,ronen/Halide,rodrigob/Halide,myrtleTree33/Halide,fengzhyuan/Halide,tdenniston/Halide,damienfir/Halide,myrtleTree33/Halide,gchauras/Halide,dougkwan/Halide,mikeseven/Halide,mikeseven/Halide,jiawen/Halide,kgnk/Halide,kenkuang1213/Halide,ayanazmat/Halide,aam/Halide,ayanazmat/Halide,tdenniston/Halide,delcypher/Halide,smxlong/Halide,adasworks/Halide,ronen/Halide,aam/Halide,jiawen/Halide,psuriana/Halide,psuriana/Halide,kenkuang1213/Halide,jiawen/Halide,ronen/Halide,lglucin/Halide,lglucin/Halide,fengzhyuan/Halide,lglucin/Halide,jiawen/Halide,dan-tull/Halide,tdenniston/Halide,smxlong/Halide,ronen/Halide,psuriana/Halide,damienfir/Halide,dougkwan/Halide,myrtleTree33/Halide,kenkuang1213/Halide,lglucin/Halide,ronen/Halide,kenkuang1213/Halide,fengzhyuan/Halide,mcanthony/Halide,dougkwan/Halide,tdenniston/Halide,smxlong/Halide,ayanazmat/Halide,mcanthony/Halide,rodrigob/Halide,myrtleTree33/Halide,adasworks/Halide,fengzhyuan/Halide,kenkuang1213/Halide,delcypher/Halide,myrtleTree33/Halide,rodrigob/Halide,lglucin/Halide,lglucin/Halide,dougkwan/Halide,damienfir/Halide,tdenniston/Halide,kgnk/Halide,adasworks/Halide,jiawen/Halide,adasworks/Halide,psuriana/Halide,dan-tull/Halide,mikeseven/Halide,psuriana/Halide,damienfir/Halide,dougkwan/Halide,delcypher/Halide,ayanazmat/Halide,adasworks/Halide