thread 'main' panicked at 'IndexMap: key not found with `elm-json upgrade --unsafe`

[rlefevre]

I get the following error when running elm-json upgrade --unsafe with my elm.json:

$ elm-json upgrade --unsafe
thread 'main' panicked at 'IndexMap: key not found', /home/travis/.cargo/registry/src/github.com-1ecc6299db9ec823/indexmap-1.0.2/src/map.rs:1654:13
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.

This is with version 0.2.6:

$ elm-json --version
elm-json 0.2.6

This can be reproduced with the following elm.json, note that it works correctly without the --unsafe:

{
    "type": "application",
    "source-directories": [
        "src"
    ],
    "elm-version": "0.19.1",
    "dependencies": {
        "direct": {
            "Chadtech/elm-bool-extra": "2.4.0",
            "Garados007/elm-svg-parser": "1.0.0",
            "NoRedInk/elm-compare": "2.0.0",
            "NoRedInk/elm-random-pcg-extended": "1.0.0",
            "NoRedInk/elm-uuid": "2.0.0",
            "Skinney/murmur3": "2.0.8",
            "avh4/elm-color": "1.0.0",
            "cuducos/elm-format-number": "7.0.0",
            "dillonkearns/elm-graphql": "4.5.0",
            "dmy/elm-pratt-parser": "2.0.0",
            "elm/browser": "1.0.2",
            "elm/bytes": "1.0.8",
            "elm/core": "1.0.4",
            "elm/file": "1.0.5",
            "elm/html": "1.0.0",
            "elm/http": "2.0.0",
            "elm/json": "1.1.3",
            "elm/parser": "1.1.0",
            "elm/svg": "1.0.1",
            "elm/time": "1.0.0",
            "elm/url": "1.0.0",
            "elm-community/basics-extra": "4.0.0",
            "elm-community/dict-extra": "2.4.0",
            "elm-community/json-extra": "4.2.0",
            "elm-community/list-extra": "8.2.2",
            "elm-community/maybe-extra": "5.1.0",
            "elm-community/string-extra": "4.0.1",
            "folkertdev/one-true-path-experiment": "4.0.3",
            "gampleman/elm-visualization": "2.0.1",
            "justinmimbs/date": "3.2.0",
            "justinmimbs/time-extra": "1.1.0",
            "justinmimbs/timezone-data": "2.1.4",
            "mdgriffith/elm-ui": "1.1.0",
            "newmana/chroma-elm": "16.0.3",
            "rtfeldman/elm-hex": "1.0.0",
            "rtfeldman/elm-iso8601-date-strings": "1.1.3",
            "ryannhg/date-format": "2.3.0"
        },
        "indirect": {
            "NoRedInk/elm-random-general": "1.0.0",
            "andre-dietrich/parser-combinators": "3.2.0",
            "elm/random": "1.0.0",
            "elm/regex": "1.0.0",
            "elm/virtual-dom": "1.0.2",
            "folkertdev/elm-deque": "3.0.1",
            "folkertdev/svg-path-lowlevel": "3.0.0",
            "ianmackenzie/elm-float-extra": "1.1.0",
            "ianmackenzie/elm-geometry": "1.2.1",
            "ianmackenzie/elm-interval": "1.0.1",
            "ianmackenzie/elm-triangular-mesh": "1.0.3",
            "lukewestby/elm-string-interpolate": "1.0.4",
            "mgold/elm-nonempty-list": "4.0.2",
            "myrho/elm-round": "1.0.4",
            "pilatch/flip": "1.0.0"
        }
    },
    "test-dependencies": {
        "direct": {
            "elm-explorations/test": "1.2.2"
        },
        "indirect": {}
    }
}

Running with RUST_BACKTRACE does not give much more information:

$ RUST_BACKTRACE=1 elm-json upgrade --unsafe
thread 'main' panicked at 'IndexMap: key not found', /home/travis/.cargo/registry/src/github.com-1ecc6299db9ec823/indexmap-1.0.2/src/map.rs:1654:13
stack backtrace:
   0: <unknown>
   1: <unknown>
   2: <unknown>
   3: <unknown>
   4: <unknown>
   5: <unknown>
   6: <unknown>
   7: <unknown>
   8: <unknown>
   9: <unknown>
  10: <unknown>
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

$ RUST_BACKTRACE=full elm-json upgrade --unsafe
thread 'main' panicked at 'IndexMap: key not found', /home/travis/.cargo/registry/src/github.com-1ecc6299db9ec823/indexmap-1.0.2/src/map.rs:1654:13
stack backtrace:
   0:           0x578dee - <unknown>
   1:           0x49f49c - <unknown>
   2:           0x578476 - <unknown>
   3:           0x578157 - <unknown>
   4:           0x577a90 - <unknown>
   5:           0x4e6764 - <unknown>
   6:           0x52ae42 - <unknown>
   7:           0x51ffd6 - <unknown>
   8:           0x4b6d21 - <unknown>
   9:           0x4bcab3 - <unknown>
  10:           0x4a9a3a - <unknown>

[harrysarson]

The binaries get stripped before deployment which is why you do not see any backtrace info.

Backtrace should be more informative if you ran with a locally built version of elm-json.

[zwilias]

Minimal repro (just so I don't forget about this)

{
    "type": "application",
    "source-directories": [
        "src"
    ],
    "elm-version": "0.19.1",
    "dependencies": {
        "direct": {
            "folkertdev/one-true-path-experiment": "4.0.3",
            "gampleman/elm-visualization": "2.0.1"
        },
        "indirect": {}
    },
    "test-dependencies": {
        "direct": {},
        "indirect": {}
    }
}