Laravel5.8->6.0 へのバージョンアップ時につまずいた点

laravel/framework 6.0 にバージョンアップする際につまづいた点で、下記のコマンドを実行した際に下記のエラーとなりました。

```
composer update laravel/framework --with-dependencies
```

```
 composer update laravel/framework --with-dependencies
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Conclusion: remove fideloper/proxy 4.1.0
    - Conclusion: don't install fideloper/proxy 4.1.0
    - Conclusion: don't install laravel/framework v6.0.4
    - Conclusion: don't install laravel/framework v6.0.3
    - Conclusion: don't install laravel/framework v6.0.2
    - Conclusion: don't install laravel/framework v6.0.1
    - Installation request for fideloper/proxy (locked at 4.1.0, required as ^4.0) -> satisfiable by fideloper/proxy[4.1.0].
    - Conclusion: don't install laravel/framework v6.0.0
    - fideloper/proxy 4.1.0 requires illuminate/contracts ~5.0 -> satisfiable by laravel/framework[v5.8.17], illuminate/contracts[5.0.x-dev, 5.1.x-dev, 5.2.x-dev, 5.3.x-dev, 5.4.x-dev, 5.5.x-dev, 5.6.x-dev, 5.7.17, 5.7.18, 5.7.19, 5.7.x-dev, 5.8.x-dev, v5.0.0, v5.0.33, v5.1.1, v5.1.13, v5.1.16, v5.1.20, v5.1.22, v5.1.25, v5.1.28, v5.1.30, v5.1.31, v5.1.41, v5.1.8, v5.2.0, v5.2.19, v5.2.21, v5.2.24, v5.2.25, v5.2.26, v5.2.27, v5.2.28, v5.2.31, v5.2.32, v5.2.37, v5.2.43, v5.2.45, v5.2.6, v5.2.7, v5.3.0, v5.3.16, v5.3.23, v5.3.4, v5.4.0, v5.4.13, v5.4.17, v5.4.19, v5.4.27, v5.4.36, v5.4.9, v5.5.0, v5.5.16, v5.5.17, v5.5.2, v5.5.28, v5.5.33, v5.5.34, v5.5.35, v5.5.36, v5.5.37, v5.5.39, v5.5.40, v5.5.41, v5.5.43, v5.5.44, v5.6.0, v5.6.1, v5.6.10, v5.6.11, v5.6.12, v5.6.13, v5.6.14, v5.6.15, v5.6.16, v5.6.17, v5.6.19, v5.6.2, v5.6.20, v5.6.21, v5.6.22, v5.6.23, v5.6.24, v5.6.25, v5.6.26, v5.6.27, v5.6.28, v5.6.29, v5.6.3, v5.6.30, v5.6.31, v5.6.32, v5.6.33, v5.6.34, v5.6.35, v5.6.36, v5.6.37, v5.6.38, v5.6.39, v5.6.4, v5.6.5, v5.6.6, v5.6.7, v5.6.8, v5.6.9, v5.7.0, v5.7.1, v5.7.10, v5.7.11, v5.7.15, v5.7.2, v5.7.20, v5.7.21, v5.7.22, v5.7.23, v5.7.26, v5.7.27, v5.7.28, v5.7.3, v5.7.4, v5.7.5, v5.7.6, v5.7.7, v5.7.8, v5.7.9, v5.8.0, v5.8.11, v5.8.12, v5.8.14, v5.8.15, v5.8.17, v5.8.18, v5.8.19, v5.8.2, v5.8.20, v5.8.22, v5.8.24, v5.8.27, v5.8.28, v5.8.29, v5.8.3, v5.8.30, v5.8.31, v5.8.32, v5.8.33, v5.8.34, v5.8.35, v5.8.4, v5.8.8, v5.8.9].
    - Can only install one of: laravel/framework[6.x-dev, v5.8.17].
    - don't install illuminate/contracts 5.6.x-dev|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.0|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.1|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.10|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.11|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.12|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.13|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.14|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.15|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.16|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.17|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.19|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.2|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.20|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.21|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.22|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.23|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.24|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.25|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.26|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.27|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.28|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.29|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.3|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.30|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.31|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.32|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.33|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.34|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.35|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.36|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.37|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.38|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.39|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.4|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.5|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.6|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.7|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.8|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.6.9|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts 5.7.17|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts 5.7.18|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts 5.7.19|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts 5.7.x-dev|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.7.0|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.7.1|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.7.10|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.7.11|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.7.15|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.7.2|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.7.20|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.7.21|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.7.22|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.7.23|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.7.26|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.7.27|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.7.28|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.7.3|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.7.4|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.7.5|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.7.6|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.7.7|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.7.8|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.7.9|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts 5.8.x-dev|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.0|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.11|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.12|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.14|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.15|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.17|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.18|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.19|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.2|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.20|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.22|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.24|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.27|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.28|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.29|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.3|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.30|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.31|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.32|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.33|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.34|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.35|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.4|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.8|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.8.9|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts 5.0.x-dev|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts 5.1.x-dev|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts 5.2.x-dev|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts 5.3.x-dev|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts 5.4.x-dev|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts 5.5.x-dev|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.0.0|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.0.33|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.1.1|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.1.13|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.1.16|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.1.20|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.1.22|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.1.25|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.1.28|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.1.30|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.1.31|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.1.41|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.1.8|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.2.0|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.2.19|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.2.21|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.2.24|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.2.25|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.2.26|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.2.27|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.2.28|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.2.31|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.2.32|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.2.37|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.2.43|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.2.45|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.2.6|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.2.7|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.3.0|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.3.16|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.3.23|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.3.4|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.4.0|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.4.13|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.4.17|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.4.19|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.4.27|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.4.36|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.4.9|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.5.0|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.5.16|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.5.17|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.5.2|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.5.28|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.5.33|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.5.34|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.5.35|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.5.36|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.5.37|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.5.39|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.5.40|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.5.41|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.5.43|don't install laravel/framework 6.x-dev
    - don't install illuminate/contracts v5.5.44|don't install laravel/framework 6.x-dev
    - Installation request for laravel/framework ^6.0 -> satisfiable by laravel/framework[6.x-dev, v6.0.0, v6.0.1, v6.0.2, v6.0.3, v6.0.4].
```

その後の対応としては、 fideloper proxy 4.1.0 をcomposer.json から削除したり、laravel/frameworkをcomposer.jsonから削除したりしましたが同じエラーとなりました。（laravel/frameworkのエラー）

## 解決法
下記の操作で正常にlaravel6.0のインストールができました。
- **１．laravel/framework と、fideloper/proxy4.1.0 を composer.json から削除**
- **２．composer update を実行**


## Laravel5.8 -> 6.0での変更点での修正した部分
ユニットテストで落ちていた部分に関して下記の変更を行いました。

- **1. Langファサードのtrans メソッドが廃止**
https://readouble.com/laravel/6.0/ja/upgrade.html#trans-and-trans-choice
→**getメソッドに変更し対応しました。**

- **2. helper関数str_○○が廃止**
https://qiita.com/sasakure-kei@github/items/adc64bed00e7c66996e2
テストではstr_random 関数が無くて落ちていました。
→**Illuminate\Support\Str::randomメソッドに変更し対応しました。**

以上です。