panic: unable to find an index for ID: 0 goroutine 158537 [running]: panic(0x17d7b20, 0xc005404770) GOROOT/src/runtime/panic.go:1065 +0x565 fp=0xc0058af468 sp=0xc0058af3a0 pc=0x43a6c5 gvisor.dev/gvisor/pkg/sentry/kernel/semaphore.(*Registry).Remove(0xc0004d8450, 0xc000000000, 0xc003d64660, 0x0, 0x0) pkg/sentry/kernel/semaphore/semaphore.go:222 +0x23f fp=0xc0058af518 sp=0xc0058af468 pc=0xb0bc7f gvisor.dev/gvisor/pkg/sentry/syscalls/linux.remove(0xc004b3ca80, 0x0, 0xc0001b8348, 0x0) pkg/sentry/syscalls/linux/sys_sem.go:243 +0x94 fp=0xc0058af570 sp=0xc0058af518 pc=0xdf45d4 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Semctl(0xc004b3ca80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1c4d600, ...) pkg/sentry/syscalls/linux/sys_sem.go:160 +0x3c5 fp=0xc0058af720 sp=0xc0058af570 pc=0xdf39e5 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc004b3ca80, 0x42, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...) pkg/sentry/kernel/task_syscall.go:104 +0x453 fp=0xc0058af9c0 sp=0xc0058af720 pc=0xd40c93 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc004b3ca80, 0x42, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc004b3d35f, 0xc004b3ca80) pkg/sentry/kernel/task_syscall.go:239 +0xb4 fp=0xc0058afa98 sp=0xc0058af9c0 pc=0xd42474 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc004b3ca80, 0x42, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4790cc, 0x4860df) pkg/sentry/kernel/task_syscall.go:199 +0x10f fp=0xc0058afb40 sp=0xc0058afa98 pc=0xd41d6f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc004b3ca80, 0x2, 0xc004b3ca80) pkg/sentry/kernel/task_syscall.go:174 +0x214 fp=0xc0058afcb0 sp=0xc0058afb40 pc=0xd414f4 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc004b3ca80, 0x1c4e2a0, 0x0) pkg/sentry/kernel/task_run.go:282 +0x12c7 fp=0xc0058afed0 sp=0xc0058afcb0 pc=0xd2d467 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc004b3ca80, 0x1a94) pkg/sentry/kernel/task_run.go:97 +0x393 fp=0xc0058affd0 sp=0xc0058afed0 pc=0xd2b593 runtime.goexit() src/runtime/asm_amd64.s:1371 +0x1 fp=0xc0058affd8 sp=0xc0058affd0 pc=0x477501 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:328 +0x1a5