gistfile1.txt

  1) test fetch many packages (HexWeb.API.RouterTest)
     test/hex_web/api/router_test.exs:469
     Assertion with == failed
     code: conn.status() == 200
     lhs:  500
     rhs:  200
     stacktrace:
       test/hex_web/api/router_test.exs:473
......16:55:48.086 [error] ** (Protocol.UndefinedError) protocol JSON.Encoder not implemented for {:week, 1}
    lib/json/encoder.ex:216: JSON.Encoder.Any.to_json/2
    lib/json/encoder.ex:12: JSON.Encode.it/2
    lib/json.ex:12: JSON.encode!/2
    lib/json/encoder.ex:47: anonymous fn/2 in JSON.Encoder.List.encode_array/3
    (elixir) lib/enum.ex:962: Enum."-map/2-lc$^0/1-0-"/2
    lib/json/encoder.ex:46: JSON.Encoder.List.encode_array/3
    lib/json/encoder.ex:34: JSON.Encoder.List.to_json/2
    lib/json/encoder.ex:12: JSON.Encode.it/2