rkt crash

gistfile1.txt

sudo ./build-rkt-1.0.0+git/bin/rkt run docker:busybox
image: using image from file /usr/lib/rkt/stage1.aci
image: remote fetching from URL "docker:busybox"
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xb code=0x1 addr=0x0 pc=0x5e4314]

goroutine 1 [running, locked to thread]:
github.com/coreos/rkt/rkt/image.(*dockerFetcher).GetHash(0xc82033b2f0, 0xc820322080, 0x0, 0x0, 0x0, 0x0)
        /home/raghu/repo/go/src/github.com/coreos/rkt/build-rkt-1.0.0+git/gopath/src/github.com/coreos/rkt/rkt/image/dockerfetcher.go:54 +0x1f4
github.com/coreos/rkt/rkt/image.(*Fetcher).maybeFetchDockerURLFromRemote(0xc82033ba50, 0xc820322080, 0x0, 0x0, 0x0, 0x0)
        /home/raghu/repo/go/src/github.com/coreos/rkt/build-rkt-1.0.0+git/gopath/src/github.com/coreos/rkt/rkt/image/fetcher.go:249 +0x1ab
github.com/coreos/rkt/rkt/image.(*Fetcher).fetchSingleImageByDockerURL(0xc82033ba50, 0xc820322080, 0x0, 0x0, 0x0, 0x0)
        /home/raghu/repo/go/src/github.com/coreos/rkt/build-rkt-1.0.0+git/gopath/src/github.com/coreos/rkt/rkt/image/fetcher.go:187 +0x12b
github.com/coreos/rkt/rkt/image.(*Fetcher).fetchSingleImageByURL(0xc82033ba50, 0x7ffc06ce7590, 0xe, 0xc82033b600, 0x0, 0x0, 0x0, 0x0)
        /home/raghu/repo/go/src/github.com/coreos/rkt/build-rkt-1.0.0+git/gopath/src/github.com/coreos/rkt/rkt/image/fetcher.go:153 +0x819
github.com/coreos/rkt/rkt/image.(*Fetcher).fetchSingleImage(0xc82033ba50, 0x7ffc06ce7590, 0xe, 0xc82033b600, 0x2, 0x0, 0x0, 0x0, 0x0)
        /home/raghu/repo/go/src/github.com/coreos/rkt/build-rkt-1.0.0+git/gopath/src/github.com/coreos/rkt/rkt/image/fetcher.go:126 +0x1f1
github.com/coreos/rkt/rkt/image.(*Fetcher).FetchImage(0xc82033ba50, 0x7ffc06ce7590, 0xe, 0x0, 0x0, 0x2, 0x0, 0x0, 0x0, 0x0)
        /home/raghu/repo/go/src/github.com/coreos/rkt/build-rkt-1.0.0+git/gopath/src/github.com/coreos/rkt/rkt/image/fetcher.go:43 +0x16f
github.com/coreos/rkt/rkt/image.(*Finder).FindImage(0xc82033ba50, 0x7ffc06ce7590, 0xe, 0x0, 0x0, 0x2, 0xb, 0x0, 0x0)
        /home/raghu/repo/go/src/github.com/coreos/rkt/build-rkt-1.0.0+git/gopath/src/github.com/coreos/rkt/rkt/image/finder.go:57 +0x10e
github.com/coreos/rkt/rkt/image.(*Finder).FindImages.func1(0xc8202610e0, 0x0, 0x0)
        /home/raghu/repo/go/src/github.com/coreos/rkt/build-rkt-1.0.0+git/gopath/src/github.com/coreos/rkt/rkt/image/finder.go:33 +0x68
github.com/coreos/rkt/common/apps.(*Apps).Walk(0x14080e0, 0xc82033b7a0, 0x0, 0x0)
        /home/raghu/repo/go/src/github.com/coreos/rkt/build-rkt-1.0.0+git/gopath/src/github.com/coreos/rkt/common/apps/apps.go:116 +0x92
github.com/coreos/rkt/rkt/image.(*Finder).FindImages(0xc82033ba50, 0x14080e0, 0x0, 0x0)
        /home/raghu/repo/go/src/github.com/coreos/rkt/build-rkt-1.0.0+git/gopath/src/github.com/coreos/rkt/rkt/image/finder.go:39 +0x4a
main.runRun(0x13d2580, 0xc820115250, 0x1, 0x1, 0x0)
        /home/raghu/repo/go/src/github.com/coreos/rkt/build-rkt-1.0.0+git/gopath/src/github.com/coreos/rkt/rkt/run.go:193 +0xdb7
main.runWrapper.func1(0x13d2580, 0xc820115250, 0x1, 0x1)
        /home/raghu/repo/go/src/github.com/coreos/rkt/build-rkt-1.0.0+git/gopath/src/github.com/coreos/rkt/rkt/rkt.go:193 +0x43
main.ensureSuperuser.func1(0x13d2580, 0xc820115250, 0x1, 0x1)
        /home/raghu/repo/go/src/github.com/coreos/rkt/build-rkt-1.0.0+git/gopath/src/github.com/coreos/rkt/rkt/rkt.go:206 +0x160
github.com/spf13/cobra.(*Command).execute(0x13d2580, 0xc8201151e0, 0x1, 0x1, 0x0, 0x0)
        /home/raghu/repo/go/src/github.com/coreos/rkt/build-rkt-1.0.0+git/gopath/src/github.com/coreos/rkt/Godeps/_workspace/src/github.com/spf13/cobra/command.go:572 +0x869
github.com/spf13/cobra.(*Command).ExecuteC(0x13d0180, 0x13d2580, 0x0, 0x0)
        /home/raghu/repo/go/src/github.com/coreos/rkt/build-rkt-1.0.0+git/gopath/src/github.com/coreos/rkt/Godeps/_workspace/src/github.com/spf13/cobra/command.go:662 +0x54e
github.com/spf13/cobra.(*Command).Execute(0x13d0180, 0x0, 0x0)
        /home/raghu/repo/go/src/github.com/coreos/rkt/build-rkt-1.0.0+git/gopath/src/github.com/coreos/rkt/Godeps/_workspace/src/github.com/spf13/cobra/command.go:618 +0x2d
main.main()
        /home/raghu/repo/go/src/github.com/coreos/rkt/build-rkt-1.0.0+git/gopath/src/github.com/coreos/rkt/rkt/rkt.go:224 +0x94

goroutine 17 [syscall, locked to thread]:
runtime.goexit()
        /usr/lib/go/src/runtime/asm_amd64.s:1721 +0x1

goroutine 5 [syscall]:
os/signal.loop()
        /usr/lib/go/src/os/signal/signal_unix.go:22 +0x18
created by os/signal.init.1
        /usr/lib/go/src/os/signal/signal_unix.go:28 +0x37