panic during adding new element

[kesonliu1983]

error message:
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x40 pc=0x808019]

goroutine 10662137 [running]:
container/list.(*List).remove(...)
/usr/lib/golang/src/container/list/list.go:110
container/list.(*List).Remove(...)
/usr/lib/golang/src/container/list/list.go:143
github.com/hashicorp/golang-lru/simplelru.(*LRU).removeElement(0xc0005962a0, 0xc002408000)
/root/zip/majiang/vendor/github.com/hashicorp/golang-lru/simplelru/lru.go:155 +0x39
github.com/hashicorp/golang-lru/simplelru.(*LRU).removeOldest(0xc0005962a0)
/root/zip/majiang/vendor/github.com/hashicorp/golang-lru/simplelru/lru.go:149 +0x4c
github.com/hashicorp/golang-lru/simplelru.(*LRU).Add(0xc0005962a0, 0x11ab0a0, 0xc00b4ac2c0, 0x0, 0x0, 0xc00c49b501)
/root/zip/majiang/vendor/github.com/hashicorp/golang-lru/simplelru/lru.go:67 +0x2c1
github.com/hashicorp/golang-lru.(*ARCCache).replace(0xc0002ec1c0, 0x0)
/root/zip/majiang/vendor/github.com/hashicorp/golang-lru/arc.go:186 +0x96
github.com/hashicorp/golang-lru.(*ARCCache).Add(0xc0002ec1c0, 0x11ab0a0, 0xc00c49b5e0, 0x1380640, 0xc007c432c0)
/root/zip/majiang/vendor/github.com/hashicorp/golang-lru/arc.go:163 +0x5b2

[rukolahasser]

I'm running into the similar error.