=== RUN   TestNetworkDBCRUDTableEntries
2020/09/11 15:11:30 Closing DB instances...
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x917796]

goroutine 292 [running]:
github.com/docker/libnetwork/vendor/github.com/armon/go-radix.recursiveWalk(0x0, 0xc000050b50, 0xc000248800)
	/go/src/github.com/docker/libnetwork/vendor/github.com/armon/go-radix/radix.go:519 +0x26
github.com/docker/libnetwork/vendor/github.com/armon/go-radix.recursiveWalk(0xc0003a0bd0, 0xc000050b50, 0xc000050b40)
	/go/src/github.com/docker/libnetwork/vendor/github.com/armon/go-radix/radix.go:525 +0x7e
github.com/docker/libnetwork/vendor/github.com/armon/go-radix.recursiveWalk(0xc0003a0b10, 0xc000050b50, 0xc00034e950)
	/go/src/github.com/docker/libnetwork/vendor/github.com/armon/go-radix/radix.go:525 +0x7e
github.com/docker/libnetwork/vendor/github.com/armon/go-radix.recursiveWalk(0xc0003283f0, 0xc000050b50, 0x1)
	/go/src/github.com/docker/libnetwork/vendor/github.com/armon/go-radix/radix.go:525 +0x7e
github.com/docker/libnetwork/vendor/github.com/armon/go-radix.(*Tree).Walk(...)
	/go/src/github.com/docker/libnetwork/vendor/github.com/armon/go-radix/radix.go:447
github.com/docker/libnetwork/networkdb.(*NetworkDB).deleteNodeTableEntries(0xc0001e6ea0, 0xc00047c930, 0xc)
	/go/src/github.com/docker/libnetwork/networkdb/networkdb.go:546 +0xa3
github.com/docker/libnetwork/networkdb.(*NetworkDB).changeNodeState(0xc0001e6ea0, 0xc00047c930, 0xc, 0x1, 0xc000080570, 0xc000328301, 0xc000025ac6)
	/go/src/github.com/docker/libnetwork/networkdb/nodemgmt.go:88 +0x31e
github.com/docker/libnetwork/networkdb.(*NetworkDB).handleNodeEvent(0xc0001e6ea0, 0xc000234e80, 0x0)
	/go/src/github.com/docker/libnetwork/networkdb/delegate.go:60 +0x1ad
github.com/docker/libnetwork/networkdb.(*NetworkDB).handleNodeMessage(0xc0001e6ea0, 0xc000025ac0, 0x12, 0x20)
	/go/src/github.com/docker/libnetwork/networkdb/delegate.go:299 +0x121
github.com/docker/libnetwork/networkdb.(*NetworkDB).handleMessage(0xc0001e6ea0, 0xc00051a006, 0x16, 0xfffa, 0xc0003a6500)
	/go/src/github.com/docker/libnetwork/networkdb/delegate.go:383 +0x2dc
github.com/docker/libnetwork/networkdb.(*delegate).NotifyMsg(0xc000010540, 0xc00051a006, 0x16, 0xfffa)
	/go/src/github.com/docker/libnetwork/networkdb/delegate.go:402 +0x72
github.com/docker/libnetwork/vendor/github.com/hashicorp/memberlist.(*Memberlist).handleUser(...)
	/go/src/github.com/docker/libnetwork/vendor/github.com/hashicorp/memberlist/net.go:550
github.com/docker/libnetwork/vendor/github.com/hashicorp/memberlist.(*Memberlist).packetHandler(0xc0000c2500)
	/go/src/github.com/docker/libnetwork/vendor/github.com/hashicorp/memberlist/net.go:390 +0x18e
created by github.com/docker/libnetwork/vendor/github.com/hashicorp/memberlist.newMemberlist
	/go/src/github.com/docker/libnetwork/vendor/github.com/hashicorp/memberlist/memberlist.go:180 +0x406
exit status 2
FAIL	github.com/docker/libnetwork/networkdb	13.464s
make: *** [Makefile:129: unit-tests-local] Error 1
make: *** [Makefile:123: unit-tests] Error 2