composer install laravel 6.0

composer create-project --prefer-dist laravel/laravel laravel
Installing laravel/laravel (v6.0.0)
  - Installing laravel/laravel (v6.0.0): Downloading (100%)
Created project in laravel
> @php -r "file_exists('.env') || copy('.env.example', '.env');"
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 80 installs, 0 updates, 0 removals
  - Installing symfony/polyfill-ctype (v1.12.0): Loading from cache
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  - Installing symfony/var-dumper (v4.3.4): Loading from cache
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  - Installing psr/log (1.1.0): Loading from cache
  - Installing symfony/polyfill-php73 (v1.12.0): Loading from cache
  - Installing symfony/debug (v4.3.4): Loading from cache
  - Installing symfony/polyfill-intl-idn (v1.12.0): Loading from cache
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  - Installing symfony/http-foundation (v4.3.4): Loading from cache
  - Installing symfony/event-dispatcher-contracts (v1.1.5): Loading from cache
  - Installing psr/container (1.0.0): Loading from cache
  - Installing symfony/event-dispatcher (v4.3.4): Loading from cache
  - Installing symfony/http-kernel (v4.3.4): Loading from cache
  - Installing symfony/finder (v4.3.4): Loading from cache
  - Installing symfony/service-contracts (v1.1.6): Loading from cache
  - Installing symfony/console (v4.3.4): Loading from cache
  - Installing symfony/polyfill-iconv (v1.12.0): Loading from cache
  - Installing doctrine/lexer (1.1.0): Loading from cache
  - Installing egulias/email-validator (2.1.11): Loading from cache
  - Installing swiftmailer/swiftmailer (v6.2.1): Loading from cache
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  - Installing ramsey/uuid (3.8.0): Loading from cache
  - Installing psr/simple-cache (1.0.1): Loading from cache
  - Installing opis/closure (3.4.0): Loading from cache
  - Installing symfony/translation-contracts (v1.1.6): Loading from cache
  - Installing symfony/translation (v4.3.4): Loading from cache
  - Installing nesbot/carbon (2.24.0): Loading from cache
  - Installing monolog/monolog (2.0.0): Downloading (100%)
  - Installing league/flysystem (1.0.55): Loading from cache
  - Installing erusev/parsedown (1.7.3): Loading from cache
  - Installing dragonmantank/cron-expression (v2.3.0): Loading from cache
  - Installing doctrine/inflector (v1.3.0): Loading from cache
  - Installing laravel/framework (v6.0.1): Downloading (100%)
  - Installing fideloper/proxy (4.2.1): Downloading (100%)
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  - Installing fzaninotto/faker (v1.8.0): Loading from cache
  - Installing hamcrest/hamcrest-php (v2.0.0): Loading from cache
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  - Installing doctrine/instantiator (1.2.0): Loading from cache
  - Installing phpspec/prophecy (1.8.1): Loading from cache
  - Installing phar-io/version (2.0.1): Loading from cache
  - Installing phar-io/manifest (1.0.3): Loading from cache
  - Installing myclabs/deep-copy (1.9.3): Loading from cache
  - Installing phpunit/phpunit (8.3.4): Loading from cache