Error test php 7.3 php -S localhost:8080 -t public > /dev/null 2>&1& no respond

Currently I have a very simple test in codeception works in php 7.1, 7.2, but fails in 7.3.

travis.yml:

language: php
php:
- 7.1
- 7.2
- 7.3

# faster builds on new travis setup not using sudo
sudo: false

# cache vendor dirs
cache:
directories:
- $HOME/.composer/cache

install:
- travis_retry composer self-update && composer --version
- travis_retry composer update --dev --prefer-dist --no-interaction

before_script:
- vendor/bin/codecept build
- php -S localhost:8080 -t public > /dev/null 2>&1&

script:
- vendor/bin/codecept run

The problem is that the server is not responding:

`- php -S localhost:8080 -t public > /dev/null 2>&1&

travis build

Thks.

Are you sure the server is starting with PHP 7.3?

Yes.

How do you know that? It is not responding to your request. I suggest not discarding STDOUT and STDERR, and see if the command shows you anything interesting.