update lists and install xdebug

1 job for master in 20 seconds (queued for 1 second)
Name Stage Failure
build Build
Unpacking pkgconf (0.9.12-6) ...
Setting up pkgconf (0.9.12-6) ...
Updating channel "pecl.php.net"
Channel "pecl.php.net" is up to date
pecl/xdebug requires PHP (version >= 7.0.0), installed version is 5.6.39
No valid packages found
install failed
The command '/bin/sh -c apt-get update && apt-get install -y autoconf dpkg dpkg-dev file g++ gcc make pkgconf re2c && pecl channel-update pecl.php.net && pecl install xdebug && rm -rf /var/lib/apt/lists/*' returned a non-zero code: 1
ERROR: Job failed: command terminated with exit code 1