etcd: etcd crashes due to corrupt data dir (3.2.16, Fedora 28)

I have installed etcd on Fedora 28 via sudo dnf install etcd, and am up-to-date.

If I do something like cd /tmp ; etcd (without parameters) it starts just fine.

But if I systemctl start etcd it crashes, similarly to below.

I realize this is could be some kind of an issue re. how systemd launches etcd, like a wrong parameter, thus possibly more of a mistake in the service configuration file packaging than a core etcd bug, but it probably still should not “crash hard” (with coredump), but print some sort of more useful message for whatever it is not happy about?

Glancing at /usr/lib/systemd/system/etcd.service and /etc/etcd/etcd.conf I have been able to reproduce it without systemd by just launching it with the same parameters from a CLI like so:

$ sudo bash

[root@khany /]# etcd --version
etcd Version: 3.2.16
Git SHA: Not provided (use ./build instead of go build)
Go Version: go1.10
Go OS/Arch: linux/amd64

[root@khany /]# cd /var/lib/etcd/
[root@khany etcd]# ETCD_ADVERTISE_CLIENT_URLS="http://localhost:2379" GOMAXPROCS=4 /usr/bin/etcd --name="default" --data-dir="/var/lib/etcd/default.etcd" --listen-client-urls="http://localhost:2379"
2018-08-15 15:16:57.540801 I | pkg/flags: recognized and used environment variable ETCD_ADVERTISE_CLIENT_URLS=http://localhost:2379
2018-08-15 15:16:57.540911 I | etcdmain: etcd Version: 3.2.16
2018-08-15 15:16:57.540918 I | etcdmain: Git SHA: Not provided (use ./build instead of go build)
2018-08-15 15:16:57.540922 I | etcdmain: Go Version: go1.10
2018-08-15 15:16:57.540925 I | etcdmain: Go OS/Arch: linux/amd64
2018-08-15 15:16:57.540930 I | etcdmain: setting maximum number of CPUs to 4, total number of available CPUs is 4
2018-08-15 15:16:57.540936 N | etcdmain: failed to detect default host (could not find default route)
2018-08-15 15:16:57.540990 N | etcdmain: the server is already initialized as member before, starting as etcd member...
2018-08-15 15:16:57.542741 I | embed: listening for peers on http://localhost:2380
2018-08-15 15:16:57.542985 I | embed: listening for client requests on localhost:2379
2018-08-15 15:16:57.545941 I | etcdserver: recovered store from snapshot at index 30003
2018-08-15 15:16:57.550573 C | etcdserver: recovering backend from snapshot error: database snapshot file path error: snap: snapshot file doesn't exist
panic: recovering backend from snapshot error: database snapshot file path error: snap: snapshot file doesn't exist
	panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x20 pc=0x557aed944a12]

goroutine 1 [running]:
panic(0x557aedf34800, 0x557aee55dfc0)
	/usr/lib/golang/src/runtime/panic.go:554 +0x3c5 fp=0xc420265f88 sp=0xc420265ee8 pc=0x557aed262ef5
runtime.panicmem()
	/usr/lib/golang/src/runtime/panic.go:63 +0x60 fp=0xc420265fa8 sp=0xc420265f88 pc=0x557aed261d90
runtime.sigpanic()
	/usr/lib/golang/src/runtime/signal_unix.go:388 +0x17e fp=0xc420265ff8 sp=0xc420265fa8 pc=0x557aed278dce
github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/etcdserver.NewServer.func1(0xc420266628, 0xc420266400)
	/builddir/build/BUILD/etcd-3.2.16/_build/src/github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/etcdserver/server.go:284 +0x42 fp=0xc420266020 sp=0xc420265ff8 pc=0x557aed944a12
runtime.call32(0x0, 0x557aee098fe0, 0xc4200be0b0, 0x1000000010)
	/usr/lib/golang/src/runtime/asm_amd64.s:573 +0x3d fp=0xc420266050 sp=0xc420266020 pc=0x557aed29086d
panic(0x557aedeccb40, 0xc4201dc030)
	/usr/lib/golang/src/runtime/panic.go:505 +0x22d fp=0xc4202660f0 sp=0xc420266050 pc=0x557aed262d5d
github.com/coreos/etcd/cmd/vendor/github.com/coreos/pkg/capnslog.(*PackageLogger).Panicf(0xc42000d800, 0x557aedac1e5d, 0x2a, 0xc4202664a0, 0x1, 0x1)
	/builddir/build/BUILD/etcd-3.2.16/_build/src/github.com/coreos/etcd/cmd/vendor/github.com/coreos/pkg/capnslog/pkg_logger.go:75 +0x164 fp=0xc420266170 sp=0xc4202660f0 pc=0x557aed689a34
github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/etcdserver.NewServer(0xc42023a480, 0xc42023a480, 0x557aee09faa0, 0xc4202a2020)
	/builddir/build/BUILD/etcd-3.2.16/_build/src/github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/etcdserver/server.go:379 +0x258b fp=0xc420266618 sp=0xc420266170 pc=0x557aed9320cb
github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/embed.StartEtcd(0xc4201f6700, 0xc420300300, 0x0, 0x0)
	/builddir/build/BUILD/etcd-3.2.16/_build/src/github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/embed/etcd.go:157 +0x743 fp=0xc420266c78 sp=0xc420266618 pc=0x557aeda3bde3
github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/etcdmain.startEtcd(0xc4201f6700, 0x557aedaa247b, 0x6, 0xc420267201, 0x2)
	/builddir/build/BUILD/etcd-3.2.16/_build/src/github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/etcdmain/etcd.go:186 +0x75 fp=0xc420266d40 sp=0xc420266c78 pc=0x557aeda95095
github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/etcdmain.startEtcdOrProxyV2()
	/builddir/build/BUILD/etcd-3.2.16/_build/src/github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/etcdmain/etcd.go:103 +0x136b fp=0xc420267f18 sp=0xc420266d40 pc=0x557aeda94a0b
github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/etcdmain.Main()
	/builddir/build/BUILD/etcd-3.2.16/_build/src/github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/etcdmain/main.go:39 +0x12d fp=0xc420267f78 sp=0xc420267f18 pc=0x557aeda9a19d
main.main()
	/builddir/build/BUILD/etcd-3.2.16/_build/src/github.com/coreos/etcd/cmd/etcd/main.go:28 +0x22 fp=0xc420267f88 sp=0xc420267f78 pc=0x557aeda9f1a2
runtime.main()
	/usr/lib/golang/src/runtime/proc.go:198 +0x21a fp=0xc420267fe0 sp=0xc420267f88 pc=0x557aed264c2a
runtime.goexit()
	/usr/lib/golang/src/runtime/asm_amd64.s:2361 +0x1 fp=0xc420267fe8 sp=0xc420267fe0 pc=0x557aed293071

goroutine 2 [force gc (idle)]:
runtime.gopark(0x557aee09c1d0, 0x557aee5b1770, 0x557aedaa8d3f, 0xf, 0x557aee09c014, 0x1)
	/usr/lib/golang/src/runtime/proc.go:291 +0x120 fp=0xc42005c768 sp=0xc42005c748 pc=0x557aed265080
runtime.goparkunlock(0x557aee5b1770, 0x557aedaa8d3f, 0xf, 0x14, 0x1)
	/usr/lib/golang/src/runtime/proc.go:297 +0x60 fp=0xc42005c7a8 sp=0xc42005c768 pc=0x557aed265140
runtime.forcegchelper()
	/usr/lib/golang/src/runtime/proc.go:248 +0xd0 fp=0xc42005c7e0 sp=0xc42005c7a8 pc=0x557aed264ec0
runtime.goexit()
	/usr/lib/golang/src/runtime/asm_amd64.s:2361 +0x1 fp=0xc42005c7e8 sp=0xc42005c7e0 pc=0x557aed293071
created by runtime.init.5
	/usr/lib/golang/src/runtime/proc.go:237 +0x37

goroutine 3 [GC sweep wait]:
runtime.gopark(0x557aee09c1d0, 0x557aee5b1920, 0x557aedaa7400, 0xd, 0x557aed28e014, 0x1)
	/usr/lib/golang/src/runtime/proc.go:291 +0x120 fp=0xc42005cf60 sp=0xc42005cf40 pc=0x557aed265080
runtime.goparkunlock(0x557aee5b1920, 0x557aedaa7400, 0xd, 0x14, 0x1)
	/usr/lib/golang/src/runtime/proc.go:297 +0x60 fp=0xc42005cfa0 sp=0xc42005cf60 pc=0x557aed265140
runtime.bgsweep(0xc420040070)
	/usr/lib/golang/src/runtime/mgcsweep.go:71 +0x130 fp=0xc42005cfd8 sp=0xc42005cfa0 pc=0x557aed256b50
runtime.goexit()
	/usr/lib/golang/src/runtime/asm_amd64.s:2361 +0x1 fp=0xc42005cfe0 sp=0xc42005cfd8 pc=0x557aed293071
created by runtime.gcenable
	/usr/lib/golang/src/runtime/mgc.go:216 +0x5a

goroutine 18 [finalizer wait]:
runtime.gopark(0x557aee09c1d0, 0x557aee5d3d30, 0x557aedaa81ff, 0xe, 0x14, 0x1)
	/usr/lib/golang/src/runtime/proc.go:291 +0x120 fp=0xc420058718 sp=0xc4200586f8 pc=0x557aed265080
runtime.goparkunlock(0x557aee5d3d30, 0x557aedaa81ff, 0xe, 0x14, 0x1)
	/usr/lib/golang/src/runtime/proc.go:297 +0x60 fp=0xc420058758 sp=0xc420058718 pc=0x557aed265140
runtime.runfinq()
	/usr/lib/golang/src/runtime/mfinal.go:175 +0xb1 fp=0xc4200587e0 sp=0xc420058758 pc=0x557aed24dad1
runtime.goexit()
	/usr/lib/golang/src/runtime/asm_amd64.s:2361 +0x1 fp=0xc4200587e8 sp=0xc4200587e0 pc=0x557aed293071
created by runtime.createfing
	/usr/lib/golang/src/runtime/mfinal.go:156 +0x64

goroutine 16 [chan receive]:
runtime.gopark(0x557aee09c1d0, 0xc4200c88f8, 0x557aedaa6cfd, 0xc, 0xc42004d317, 0x3)
	/usr/lib/golang/src/runtime/proc.go:291 +0x120 fp=0xc420058d70 sp=0xc420058d50 pc=0x557aed265080
runtime.goparkunlock(0xc4200c88f8, 0x557aedaa6cfd, 0xc, 0x557aed281a17, 0x3)
	/usr/lib/golang/src/runtime/proc.go:297 +0x60 fp=0xc420058db0 sp=0xc420058d70 pc=0x557aed265140
runtime.chanrecv(0xc4200c88a0, 0xc420058f38, 0x3b9aca01, 0xc4200bc960)
	/usr/lib/golang/src/runtime/chan.go:518 +0x2f6 fp=0xc420058e48 sp=0xc420058db0 pc=0x557aed23c216
runtime.chanrecv2(0xc4200c88a0, 0xc420058f38, 0xc420000180)
	/usr/lib/golang/src/runtime/chan.go:405 +0x2b fp=0xc420058e78 sp=0xc420058e48 pc=0x557aed23bf0b
github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/pkg/logutil.(*MergeLogger).outputLoop(0xc42000cb40)
	/builddir/build/BUILD/etcd-3.2.16/_build/src/github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/pkg/logutil/merge_logger.go:174 +0x40f fp=0xc420058fd8 sp=0xc420058e78 pc=0x557aed785b5f
runtime.goexit()
	/usr/lib/golang/src/runtime/asm_amd64.s:2361 +0x1 fp=0xc420058fe0 sp=0xc420058fd8 pc=0x557aed293071
created by github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/pkg/logutil.NewMergeLogger
	/builddir/build/BUILD/etcd-3.2.16/_build/src/github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/pkg/logutil/merge_logger.go:92 +0x87

goroutine 29 [chan receive]:
runtime.gopark(0x557aee09c1d0, 0xc4201ec2f8, 0x557aedaa6cfd, 0xc, 0xc42004f817, 0x3)
	/usr/lib/golang/src/runtime/proc.go:291 +0x120 fp=0xc42005d570 sp=0xc42005d550 pc=0x557aed265080
runtime.goparkunlock(0xc4201ec2f8, 0x557aedaa6cfd, 0xc, 0x557aed281a17, 0x3)
	/usr/lib/golang/src/runtime/proc.go:297 +0x60 fp=0xc42005d5b0 sp=0xc42005d570 pc=0x557aed265140
runtime.chanrecv(0xc4201ec2a0, 0xc42005d738, 0x3b9aca01, 0xc4201ee320)
	/usr/lib/golang/src/runtime/chan.go:518 +0x2f6 fp=0xc42005d648 sp=0xc42005d5b0 pc=0x557aed23c216
runtime.chanrecv2(0xc4201ec2a0, 0xc42005d738, 0xc420000180)
	/usr/lib/golang/src/runtime/chan.go:405 +0x2b fp=0xc42005d678 sp=0xc42005d648 pc=0x557aed23bf0b
github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/pkg/logutil.(*MergeLogger).outputLoop(0xc4201a5420)
	/builddir/build/BUILD/etcd-3.2.16/_build/src/github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/pkg/logutil/merge_logger.go:174 +0x40f fp=0xc42005d7d8 sp=0xc42005d678 pc=0x557aed785b5f
runtime.goexit()
	/usr/lib/golang/src/runtime/asm_amd64.s:2361 +0x1 fp=0xc42005d7e0 sp=0xc42005d7d8 pc=0x557aed293071
created by github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/pkg/logutil.NewMergeLogger
	/builddir/build/BUILD/etcd-3.2.16/_build/src/github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/pkg/logutil/merge_logger.go:92 +0x87

goroutine 27 [syscall]:
runtime.notetsleepg(0x557aee5b7960, 0x3b9a6c3b, 0x0)
	/usr/lib/golang/src/runtime/lock_futex.go:227 +0x46 fp=0xc420059760 sp=0xc420059730 pc=0x557aed247696
runtime.timerproc(0x557aee5b7940)
	/usr/lib/golang/src/runtime/time.go:261 +0x2eb fp=0xc4200597d8 sp=0xc420059760 pc=0x557aed2820bb
runtime.goexit()
	/usr/lib/golang/src/runtime/asm_amd64.s:2361 +0x1 fp=0xc4200597e0 sp=0xc4200597d8 pc=0x557aed293071
created by runtime.(*timersBucket).addtimerLocked
	/usr/lib/golang/src/runtime/time.go:160 +0x109

goroutine 30 [chan receive]:
runtime.gopark(0x557aee09c1d0, 0xc42008cb38, 0x557aedaa6cfd, 0xc, 0x17, 0x3)
	/usr/lib/golang/src/runtime/proc.go:291 +0x120 fp=0xc420059d70 sp=0xc420059d50 pc=0x557aed265080
runtime.goparkunlock(0xc42008cb38, 0x557aedaa6cfd, 0xc, 0x557aed281a17, 0x3)
	/usr/lib/golang/src/runtime/proc.go:297 +0x60 fp=0xc420059db0 sp=0xc420059d70 pc=0x557aed265140
runtime.chanrecv(0xc42008cae0, 0xc420059f38, 0x3b9aca01, 0xc420206b90)
	/usr/lib/golang/src/runtime/chan.go:518 +0x2f6 fp=0xc420059e48 sp=0xc420059db0 pc=0x557aed23c216
runtime.chanrecv2(0xc42008cae0, 0xc420059f38, 0x0)
	/usr/lib/golang/src/runtime/chan.go:405 +0x2b fp=0xc420059e78 sp=0xc420059e48 pc=0x557aed23bf0b
github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/pkg/logutil.(*MergeLogger).outputLoop(0xc4201a5480)
	/builddir/build/BUILD/etcd-3.2.16/_build/src/github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/pkg/logutil/merge_logger.go:174 +0x40f fp=0xc420059fd8 sp=0xc420059e78 pc=0x557aed785b5f
runtime.goexit()
	/usr/lib/golang/src/runtime/asm_amd64.s:2361 +0x1 fp=0xc420059fe0 sp=0xc420059fd8 pc=0x557aed293071
created by github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/pkg/logutil.NewMergeLogger
	/builddir/build/BUILD/etcd-3.2.16/_build/src/github.com/coreos/etcd/cmd/vendor/github.com/coreos/etcd/pkg/logutil/merge_logger.go:92 +0x87

goroutine 71 [syscall]:
runtime.notetsleepg(0x557aee5b7a60, 0x5f5d124, 0x557aed533fce)
	/usr/lib/golang/src/runtime/lock_futex.go:227 +0x46 fp=0xc42005a760 sp=0xc42005a730 pc=0x557aed247696
runtime.timerproc(0x557aee5b7a40)
	/usr/lib/golang/src/runtime/time.go:261 +0x2eb fp=0xc42005a7d8 sp=0xc42005a760 pc=0x557aed2820bb
runtime.goexit()
	/usr/lib/golang/src/runtime/asm_amd64.s:2361 +0x1 fp=0xc42005a7e0 sp=0xc42005a7d8 pc=0x557aed293071
created by runtime.(*timersBucket).addtimerLocked
	/usr/lib/golang/src/runtime/time.go:160 +0x109

goroutine 62 [syscall]:
runtime.notetsleepg(0x557aee5b78e0, 0x3b9ac1f7, 0x0)
	/usr/lib/golang/src/runtime/lock_futex.go:227 +0x46 fp=0xc42005df60 sp=0xc42005df30 pc=0x557aed247696
runtime.timerproc(0x557aee5b78c0)
	/usr/lib/golang/src/runtime/time.go:261 +0x2eb fp=0xc42005dfd8 sp=0xc42005df60 pc=0x557aed2820bb
runtime.goexit()
	/usr/lib/golang/src/runtime/asm_amd64.s:2361 +0x1 fp=0xc42005dfe0 sp=0xc42005dfd8 pc=0x557aed293071
created by runtime.(*timersBucket).addtimerLocked
	/usr/lib/golang/src/runtime/time.go:160 +0x109

goroutine 40 [syscall]:
runtime.notetsleepg(0x557aee5b79e0, 0x5f5a275, 0x1)
	/usr/lib/golang/src/runtime/lock_futex.go:227 +0x46 fp=0xc420278760 sp=0xc420278730 pc=0x557aed247696
runtime.timerproc(0x557aee5b79c0)
	/usr/lib/golang/src/runtime/time.go:261 +0x2eb fp=0xc4202787d8 sp=0xc420278760 pc=0x557aed2820bb
runtime.goexit()
	/usr/lib/golang/src/runtime/asm_amd64.s:2361 +0x1 fp=0xc4202787e0 sp=0xc4202787d8 pc=0x557aed293071
created by runtime.(*timersBucket).addtimerLocked
	/usr/lib/golang/src/runtime/time.go:160 +0x109

goroutine 87 [syscall]:
runtime.notetsleepg(0x557aee5d4320, 0xffffffffffffffff, 0x0)
	/usr/lib/golang/src/runtime/lock_futex.go:227 +0x46 fp=0xc42005af80 sp=0xc42005af50 pc=0x557aed247696
os/signal.signal_recv(0x0)
	/usr/lib/golang/src/runtime/sigqueue.go:139 +0xa8 fp=0xc42005afa8 sp=0xc42005af80 pc=0x557aed279d78
os/signal.loop()
	/usr/lib/golang/src/os/signal/signal_unix.go:22 +0x24 fp=0xc42005afe0 sp=0xc42005afa8 pc=0x557aeda56564
runtime.goexit()
	/usr/lib/golang/src/runtime/asm_amd64.s:2361 +0x1 fp=0xc42005afe8 sp=0xc42005afe0 pc=0x557aed293071
created by os/signal.init.0
	/usr/lib/golang/src/os/signal/signal_unix.go:28 +0x43

goroutine 102 [GC worker (idle)]:
runtime.gopark(0x557aee09c058, 0xc4202a4300, 0x557aedaa94e7, 0x10, 0x14, 0x0)
	/usr/lib/golang/src/runtime/proc.go:291 +0x120 fp=0xc420279748 sp=0xc420279728 pc=0x557aed265080
runtime.gcBgMarkWorker(0xc42004a000)
	/usr/lib/golang/src/runtime/mgc.go:1775 +0x136 fp=0xc4202797d8 sp=0xc420279748 pc=0x557aed2516f6
runtime.goexit()
	/usr/lib/golang/src/runtime/asm_amd64.s:2361 +0x1 fp=0xc4202797e0 sp=0xc4202797d8 pc=0x557aed293071
created by runtime.gcBgMarkStartWorkers
	/usr/lib/golang/src/runtime/mgc.go:1723 +0x7b

goroutine 72 [GC worker (idle)]:
runtime.gopark(0x557aee09c058, 0xc4202a4310, 0x557aedaa94e7, 0x10, 0x14, 0x0)
	/usr/lib/golang/src/runtime/proc.go:291 +0x120 fp=0xc420274748 sp=0xc420274728 pc=0x557aed265080
runtime.gcBgMarkWorker(0xc42004c500)
	/usr/lib/golang/src/runtime/mgc.go:1775 +0x136 fp=0xc4202747d8 sp=0xc420274748 pc=0x557aed2516f6
runtime.goexit()
	/usr/lib/golang/src/runtime/asm_amd64.s:2361 +0x1 fp=0xc4202747e0 sp=0xc4202747d8 pc=0x557aed293071
created by runtime.gcBgMarkStartWorkers
	/usr/lib/golang/src/runtime/mgc.go:1723 +0x7b

goroutine 103 [GC worker (idle)]:
runtime.gopark(0x557aee09c058, 0xc4202a4320, 0x557aedaa94e7, 0x10, 0x14, 0x0)
	/usr/lib/golang/src/runtime/proc.go:291 +0x120 fp=0xc420279f48 sp=0xc420279f28 pc=0x557aed265080
runtime.gcBgMarkWorker(0xc42004ea00)
	/usr/lib/golang/src/runtime/mgc.go:1775 +0x136 fp=0xc420279fd8 sp=0xc420279f48 pc=0x557aed2516f6
runtime.goexit()
	/usr/lib/golang/src/runtime/asm_amd64.s:2361 +0x1 fp=0xc420279fe0 sp=0xc420279fd8 pc=0x557aed293071
created by runtime.gcBgMarkStartWorkers
	/usr/lib/golang/src/runtime/mgc.go:1723 +0x7b

goroutine 73 [GC worker (idle)]:
runtime.gopark(0x557aee09c058, 0xc4202a4330, 0x557aedaa94e7, 0x10, 0x14, 0x0)
	/usr/lib/golang/src/runtime/proc.go:291 +0x120 fp=0xc420274f48 sp=0xc420274f28 pc=0x557aed265080
runtime.gcBgMarkWorker(0xc420050f00)
	/usr/lib/golang/src/runtime/mgc.go:1775 +0x136 fp=0xc420274fd8 sp=0xc420274f48 pc=0x557aed2516f6
runtime.goexit()
	/usr/lib/golang/src/runtime/asm_amd64.s:2361 +0x1 fp=0xc420274fe0 sp=0xc420274fd8 pc=0x557aed293071
created by runtime.gcBgMarkStartWorkers
	/usr/lib/golang/src/runtime/mgc.go:1723 +0x7b
Aborted (core dumped)