crystal JSON error

Error in line 5: while requiring "./spec/docker/client/images_spec.cr"

in spec/docker/client/images_spec.cr:60: instantiating 'Docker::ImageCollection.class#[](String)'

    gotten = Docker::ImageCollection["sha256 hash value"]
                                    ^

in src/docker/client/images.cr:83: instantiating 'Docker::ImageCollection.class#request()'

      self.request.each { |img| return img if img.id === img_id }
           ^~~~~~~

in src/docker/client/images.cr:54: instantiating 'from_json(String)'

        from_json response.body
        ^~~~~~~~~

in /usr/share/crystal/src/json/from_json.cr:13: instantiating 'new(JSON::PullParser)'

  new parser
  ^~~

in /usr/share/crystal/src/json/from_json.cr:103: instantiating 'new(JSON::PullParser)'

  new(pull) do |element|
  ^~~

in /usr/share/crystal/src/json/from_json.cr:110: instantiating 'JSON::PullParser#read_array()'

  pull.read_array do
       ^~~~~~~~~~

in /usr/share/crystal/src/json/from_json.cr:110: instantiating 'JSON::PullParser#read_array()'

  pull.read_array do
       ^~~~~~~~~~

in /usr/share/crystal/src/json/from_json.cr:111: instantiating 'Docker::Image.class#new(JSON::PullParser)'

    yield T.new(pull)
            ^~~

in /usr/share/crystal/src/json/serialization.cr:136: expanding macro

      {% begin %}
      ^

in macro 'macro_140536185445776' /usr/share/crystal/src/json/serialization.cr:136, line 259:

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  54.
  55.
  56.           __temp_1387 = nil
  57.           __temp_1388 = false
  58.
  59.           __temp_1389 = nil
  60.           __temp_1390 = false
  61.
  62.           __temp_1391 = nil
  63.           __temp_1392 = false
  64.
  65.           __temp_1393 = nil
  66.           __temp_1394 = false
  67.
  68.           __temp_1395 = nil
  69.           __temp_1396 = false
  70.
  71.           __temp_1397 = nil
  72.           __temp_1398 = false
  73.
  74.           __temp_1399 = nil
  75.           __temp_1400 = false
  76.
  77.           __temp_1401 = nil
  78.           __temp_1402 = false
  79.
  80.           __temp_1403 = nil
  81.           __temp_1404 = false
  82.
  83.           __temp_1405 = nil
  84.           __temp_1406 = false
  85.
  86.
  87.         __temp_1407 = pull.location
  88.         begin
  89.           pull.read_begin_object
  90.         rescue exc : ::JSON::ParseException
  91.           raise ::JSON::MappingError.new(exc.message, self.class.to_s, nil, *__temp_1407, exc)
  92.         end
  93.         while pull.kind != :end_object
  94.           __temp_1408 = pull.location
  95.           key = pull.read_object_key
  96.           case key
  97.
  98.             when "Id"
  99.               __temp_1388 = true
 100.               begin
 101.                 __temp_1387 =
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 114.                 raise ::JSON::MappingError.new(exc.message, self.class.to_s, "Id", *__temp_1408, exc)
 115.               end
 116.
 117.             when "ParentId"
 118.               __temp_1390 = true
 119.               begin
 120.                 __temp_1389 =
 121.
 122.
 123.
 124.
 125.
 126.                     ::Union(String).new(pull)
 127.
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 133.                 raise ::JSON::MappingError.new(exc.message, self.class.to_s, "ParentId", *__temp_1408, exc)
 134.               end
 135.
 136.             when "RepoTags"
 137.               __temp_1392 = true
 138.               begin
 139.                 __temp_1391 =
 140.
 141.
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 145.                     ::Union(Array(String)).new(pull)
 146.
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 152.                 raise ::JSON::MappingError.new(exc.message, self.class.to_s, "RepoTags", *__temp_1408, exc)
 153.               end
 154.
 155.             when "RepoDigests"
 156.               __temp_1394 = true
 157.               begin
 158.                 __temp_1393 =
 159.
 160.
 161.
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 164.                     ::Union(Array(String)).new(pull)
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 171.                 raise ::JSON::MappingError.new(exc.message, self.class.to_s, "RepoDigests", *__temp_1408, exc)
 172.               end
 173.
 174.             when "Created"
 175.               __temp_1396 = true
 176.               begin
 177.                 __temp_1395 =
 178.
 179.
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 181.
 182.
 183.                     ::Union(Int32).new(pull)
 184.
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 190.                 raise ::JSON::MappingError.new(exc.message, self.class.to_s, "Created", *__temp_1408, exc)
 191.               end
 192.
 193.             when "Size"
 194.               __temp_1398 = true
 195.               begin
 196.                 __temp_1397 =
 197.
 198.
 199.
 200.
 201.
 202.                     ::Union(Int32).new(pull)
 203.
 204.
 205.
 206.
 207.
 208.               rescue exc : ::JSON::ParseException
 209.                 raise ::JSON::MappingError.new(exc.message, self.class.to_s, "Size", *__temp_1408, exc)
 210.               end
 211.
 212.             when "SharedSize"
 213.               __temp_1400 = true
 214.               begin
 215.                 __temp_1399 =
 216.
 217.
 218.
 219.
 220.
 221.                     ::Union(Int32).new(pull)
 222.
 223.
 224.
 225.
 226.
 227.               rescue exc : ::JSON::ParseException
 228.                 raise ::JSON::MappingError.new(exc.message, self.class.to_s, "SharedSize", *__temp_1408, exc)
 229.               end
 230.
 231.             when "VirtualSize"
 232.               __temp_1402 = true
 233.               begin
 234.                 __temp_1401 =
 235.
 236.
 237.
 238.
 239.
 240.                     ::Union(Int32).new(pull)
 241.
 242.
 243.
 244.
 245.
 246.               rescue exc : ::JSON::ParseException
 247.                 raise ::JSON::MappingError.new(exc.message, self.class.to_s, "VirtualSize", *__temp_1408, exc)
 248.               end
 249.
 250.             when "Labels"
 251.               __temp_1404 = true
 252.               begin
 253.                 __temp_1403 =
 254.
 255.
 256.
 257.
 258.
>259.                     ::Union(Hash(String, String)).new(pull)
 260.
 261.
 262.
 263.
 264.
 265.               rescue exc : ::JSON::ParseException
 266.                 raise ::JSON::MappingError.new(exc.message, self.class.to_s, "Labels", *__temp_1408, exc)
 267.               end
 268.
 269.             when "Containers"
 270.               __temp_1406 = true
 271.               begin
 272.                 __temp_1405 =
 273.
 274.
 275.
 276.
 277.
 278.                     ::Union(Int32).new(pull)
 279.
 280.
 281.
 282.
 283.
 284.               rescue exc : ::JSON::ParseException
 285.                 raise ::JSON::MappingError.new(exc.message, self.class.to_s, "Containers", *__temp_1408, exc)
 286.               end
 287.
 288.           else
 289.             on_unknown_json_attribute(pull, key, __temp_1408)
 290.           end
 291.         end
 292.         pull.read_next
 293.
 294.
 295.
 296.             if __temp_1387.nil? && !__temp_1388 && !::Union(String).nilable?
 297.               raise ::JSON::MappingError.new("Missing JSON attribute: Id", self.class.to_s, nil, *__temp_1407, nil)
 298.             end
 299.
 300.
 301.
 302.             @id = (__temp_1387).as(String)
 303.
 304.
 305.
 306.
 307.
 308.             if __temp_1389.nil? && !__temp_1390 && !::Union(String).nilable?
 309.               raise ::JSON::MappingError.new("Missing JSON attribute: ParentId", self.class.to_s, nil, *__temp_1407, nil)
 310.             end
 311.
 312.
 313.
 314.             @parent_id = (__temp_1389).as(String)
 315.
 316.
 317.
 318.
 319.
 320.             if __temp_1391.nil? && !__temp_1392 && !::Union(Array(String)).nilable?
 321.               raise ::JSON::MappingError.new("Missing JSON attribute: RepoTags", self.class.to_s, nil, *__temp_1407, nil)
 322.             end
 323.
 324.
 325.
 326.             @repo_tags = (__temp_1391).as(Array(String))
 327.
 328.
 329.
 330.
 331.
 332.             if __temp_1393.nil? && !__temp_1394 && !::Union(Array(String)).nilable?
 333.               raise ::JSON::MappingError.new("Missing JSON attribute: RepoDigests", self.class.to_s, nil, *__temp_1407, nil)
 334.             end
 335.
 336.
 337.
 338.             @repo_digests = (__temp_1393).as(Array(String))
 339.
 340.
 341.
 342.
 343.
 344.             if __temp_1395.nil? && !__temp_1396 && !::Union(Int32).nilable?
 345.               raise ::JSON::MappingError.new("Missing JSON attribute: Created", self.class.to_s, nil, *__temp_1407, nil)
 346.             end
 347.
 348.
 349.
 350.             @created_at = (__temp_1395).as(Int32)
 351.
 352.
 353.
 354.
 355.
 356.             if __temp_1397.nil? && !__temp_1398 && !::Union(Int32).nilable?
 357.               raise ::JSON::MappingError.new("Missing JSON attribute: Size", self.class.to_s, nil, *__temp_1407, nil)
 358.             end
 359.
 360.
 361.
 362.             @size = (__temp_1397).as(Int32)
 363.
 364.
 365.
 366.
 367.
 368.             if __temp_1399.nil? && !__temp_1400 && !::Union(Int32).nilable?
 369.               raise ::JSON::MappingError.new("Missing JSON attribute: SharedSize", self.class.to_s, nil, *__temp_1407, nil)
 370.             end
 371.
 372.
 373.
 374.             @shared_size = (__temp_1399).as(Int32)
 375.
 376.
 377.
 378.
 379.
 380.             if __temp_1401.nil? && !__temp_1402 && !::Union(Int32).nilable?
 381.               raise ::JSON::MappingError.new("Missing JSON attribute: VirtualSize", self.class.to_s, nil, *__temp_1407, nil)
 382.             end
 383.
 384.
 385.
 386.             @virtual_size = (__temp_1401).as(Int32)
 387.
 388.
 389.
 390.
 391.
 392.             if __temp_1403.nil? && !__temp_1404 && !::Union(Hash(String, String)).nilable?
 393.               raise ::JSON::MappingError.new("Missing JSON attribute: Labels", self.class.to_s, nil, *__temp_1407, nil)
 394.             end
 395.
 396.
 397.
 398.             @labels = (__temp_1403).as(Hash(String, String))
 399.
 400.
 401.
 402.
 403.
 404.             if __temp_1405.nil? && !__temp_1406 && !::Union(Int32).nilable?
 405.               raise ::JSON::MappingError.new("Missing JSON attribute: Containers", self.class.to_s, nil, *__temp_1407, nil)
 406.             end
 407.
 408.
 409.
 410.             @containers = (__temp_1405).as(Int32)
 411.
 412.
 413.
 414.
 415.

wrong number of arguments for 'Hash(String, String)#initialize' (given 1, expected 2)