ruby: assert(false) should be panic. This also fixes some compiler warnings
ruby: assert(false) should be panic.
This also fixes some compiler warnings

cancro7/gem5,powerjg/gem5-ci-test,austinharris/gem5-riscv,qizenguf/MLC-STT,HwisooSo/gemV-update,Weil0ng/gem5,aclifton/cpeg853-gem5,zlfben/gem5,qizenguf/MLC-STT,samueldotj/TeeRISC-Simulator,TUD-OS/gem5-dtu,kaiyuanl/gem5,gem5/gem5,austinharris/gem5-riscv,HwisooSo/gemV-update,rallylee/gem5,rjschof/gem5,gem5/gem5,briancoutinho0905/2dsampling,yb-kim/gemV,TUD-OS/gem5-dtu,KuroeKurose/gem5,SanchayanMaity/gem5,rallylee/gem5,zlfben/gem5,rallylee/gem5,SanchayanMaity/gem5,HwisooSo/gemV-update,cancro7/gem5,SanchayanMaity/gem5,sobercoder/gem5,TUD-OS/gem5-dtu,briancoutinho0905/2dsampling,zlfben/gem5,austinharris/gem5-riscv,HwisooSo/gemV-update,joerocklin/gem5,yb-kim/gemV,sobercoder/gem5,Weil0ng/gem5,gedare/gem5,kaiyuanl/gem5,austinharris/gem5-riscv,KuroeKurose/gem5,aclifton/cpeg853-gem5,cancro7/gem5,TUD-OS/gem5-dtu,gedare/gem5,samueldotj/TeeRISC-Simulator,joerocklin/gem5,joerocklin/gem5,qizenguf/MLC-STT,yb-kim/gemV,rallylee/gem5,markoshorro/gem5,aclifton/cpeg853-gem5,gedare/gem5,briancoutinho0905/2dsampling,rjschof/gem5,powerjg/gem5-ci-test,austinharris/gem5-riscv,joerocklin/gem5,kaiyuanl/gem5,Weil0ng/gem5,qizenguf/MLC-STT,SanchayanMaity/gem5,rallylee/gem5,Weil0ng/gem5,joerocklin/gem5,gem5/gem5,rjschof/gem5,austinharris/gem5-riscv,zlfben/gem5,powerjg/gem5-ci-test,rjschof/gem5,SanchayanMaity/gem5,qizenguf/MLC-STT,samueldotj/TeeRISC-Simulator,joerocklin/gem5,cancro7/gem5,kaiyuanl/gem5,aclifton/cpeg853-gem5,sobercoder/gem5,kaiyuanl/gem5,kaiyuanl/gem5,KuroeKurose/gem5,SanchayanMaity/gem5,zlfben/gem5,austinharris/gem5-riscv,rallylee/gem5,samueldotj/TeeRISC-Simulator,gedare/gem5,markoshorro/gem5,TUD-OS/gem5-dtu,gem5/gem5,zlfben/gem5,gedare/gem5,gedare/gem5,samueldotj/TeeRISC-Simulator,markoshorro/gem5,kaiyuanl/gem5,markoshorro/gem5,sobercoder/gem5,samueldotj/TeeRISC-Simulator,joerocklin/gem5,gem5/gem5,HwisooSo/gemV-update,powerjg/gem5-ci-test,sobercoder/gem5,cancro7/gem5,rjschof/gem5,markoshorro/gem5,aclifton/cpeg853-gem5,briancoutinho0905/2dsampling,zlfben/gem5,powerjg/gem5-ci-test,TUD-OS/gem5-dtu,qizenguf/MLC-STT,yb-kim/gemV,KuroeKurose/gem5,joerocklin/gem5,KuroeKurose/gem5,yb-kim/gemV,yb-kim/gemV,powerjg/gem5-ci-test,cancro7/gem5,aclifton/cpeg853-gem5,rjschof/gem5,sobercoder/gem5,yb-kim/gemV,KuroeKurose/gem5,qizenguf/MLC-STT,yb-kim/gemV,rjschof/gem5,aclifton/cpeg853-gem5,TUD-OS/gem5-dtu,gedare/gem5,briancoutinho0905/2dsampling,markoshorro/gem5,SanchayanMaity/gem5,KuroeKurose/gem5,briancoutinho0905/2dsampling,HwisooSo/gemV-update,samueldotj/TeeRISC-Simulator,Weil0ng/gem5,markoshorro/gem5,Weil0ng/gem5,gem5/gem5,HwisooSo/gemV-update,Weil0ng/gem5,cancro7/gem5,powerjg/gem5-ci-test,sobercoder/gem5,gem5/gem5,rallylee/gem5,briancoutinho0905/2dsampling