'panic: runtime error: index out of range' using --stdin

[remram44]

dockviz v0.6.3

curl --unix-socket /var/run/docker.sock -k 'http://localhost/images/json?all=1' | docker run -i --rm nate/dockviz --stdin images -t
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  126k    0  126k    0     0   803k      0 --:--:-- --:--:-- --:--:--  798k
panic: runtime error: index out of range

goroutine 1 [running]:
main.PrintTreeNode(0xc4201f8620, 0xc4201ade50, 0x47, 0xc4201adea0, 0x47, 0x0, 0x0, 0x0, 0xcb45f50b, 0xcb45f50b, ...)
        /go/src/github.com/justone/dockviz/images.go:404 +0x592
main.jsonToText(0xc4201f8620, 0xc4201f45b0, 0x1, 0x1, 0xc420071e90, 0xc400000000, 0xc420012f20, 0x12)
        /go/src/github.com/justone/dockviz/images.go:370 +0x51d
main.jsonToText(0xc4201f8620, 0xc4201f4620, 0x1, 0x1, 0xc420071e90, 0xc400000000, 0xc4201d47f0, 0x10)
        /go/src/github.com/justone/dockviz/images.go:372 +0x650
main.jsonToText(0xc4201f8620, 0xc4201d88c0, 0x2, 0x2, 0xc420071e90, 0xc400000000, 0xc4201d47d0, 0xc)
        /go/src/github.com/justone/dockviz/images.go:365 +0x2f6
main.jsonToText(0xc4201f8620, 0xc4201f4770, 0x1, 0x1, 0xc420071e90, 0xc400000000, 0xc4201d47a0, 0xa)
        /go/src/github.com/justone/dockviz/images.go:372 +0x650
main.jsonToText(0xc4201f8620, 0xc4201d89a0, 0x2, 0x2, 0xc420071e90, 0xc400000000, 0xc4201d4770, 0x6)
        /go/src/github.com/justone/dockviz/images.go:365 +0x2f6
main.jsonToText(0xc4201f8620, 0xc4201d8a80, 0x2, 0x2, 0xc420071e90, 0x0, 0x830155, 0x4)
        /go/src/github.com/justone/dockviz/images.go:365 +0x2f6
main.jsonToText(0xc4201f8620, 0xc4201ea000, 0x36, 0x49, 0xc420071e90, 0xc400000000, 0x0, 0x0)
        /go/src/github.com/justone/dockviz/images.go:365 +0x2f6
main.jsonToTree(0xc4201ea000, 0x36, 0x49, 0xc420071e90, 0x0, 0xc4201e2000, 0x92)
        /go/src/github.com/justone/dockviz/images.go:283 +0xa2
main.(*ImagesCommand).Execute(0xa6ee70, 0xc420071bc0, 0x0, 0x3, 0xa6ee70, 0x1)
        /go/src/github.com/justone/dockviz/images.go:168 +0x491
github.com/justone/dockviz/vendor/github.com/jessevdk/go-flags.(*Parser).ParseArgs(0xc420145f10, 0xc42000e110, 0x3, 0x3, 0x0, 0xc420135f70, 0x4046a4, 0xc42006e058, 0x0)
        /go/src/github.com/justone/dockviz/vendor/github.com/jessevdk/go-flags/parser.go:320 +0x841
github.com/justone/dockviz/vendor/github.com/jessevdk/go-flags.(*Parser).Parse(0xc420145f10, 0x744d9c, 0x0, 0x0, 0x16, 0xc420145f10)
        /go/src/github.com/justone/dockviz/vendor/github.com/jessevdk/go-flags/parser.go:190 +0x71
main.main()
        /go/src/github.com/justone/dockviz/cli.go:30 +0x45

[remram44]

The JSON array does have this in it, which is as surprising to me as it probably is to you 😕

  {
    "Containers": -1,
    "Created": 1524279355,
    "Id": "sha256:6bf7a4fa2d455fae4ce7f38b0b6db33fc5c5ea537c252b0bab8a6338176cb81b",
    "Labels": null,
    "ParentId": "",
    "RepoDigests": [
      "python@sha256:c6542afed7bac783c9b61f27a963652a6d68c0c6d8e71494706f69ce5b66e082"                                                                          
    ],
    "RepoTags": null,
    "SharedSize": -1,
    "Size": 690537516,
    "VirtualSize": 690537516
  }