remove hhvm testing, fails with ...

Using worker: worker-linux-3-1.bb.travis-ci.org:travis-linux-19
git.1
$ git clone --depth=50 --branch=develop-2 git://github.com/auraphp/Aura.Cli_Kernel.git auraphp/Aura.Cli_Kernel
Cloning into 'auraphp/Aura.Cli_Kernel'...
remote: Counting objects: 141, done.
remote: Compressing objects: 100% (79/79), done.
remote: Total 141 (delta 51), reused 123 (delta 35)
Receiving objects: 100% (141/141), 16.88 KiB, done.
Resolving deltas: 100% (51/51), done.
$ cd auraphp/Aura.Cli_Kernel
git.3
$ git checkout -qf 0fceeb6ecca083ce4ac4aaef43ff31f3508df9ea
$ phpenv global hhvm
$ php --version
HipHop VM v2.3.0 (rel)
Compiler: heads/HHVM-2.3-0-ga12fa4ac4dacbb45348a6ff2b3775f895883f934
Repo schema: 30349d0b2f68667d4e5a3fd291f2274c608f9e29
$ composer --version
Cannot open log file: /var/log/hhvm/error.log
HipHop Strict Warning: It is not safe to rely on the system's timezone settings. Please use the date.timezone setting, the TZ environment variable or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'UTC' for 'UTC/0.0/no DST' instead in phar://composer.phar/bin/../src/../src/Composer/Console/Application.php on line 65
Composer version 80499bb02418711b34bba59c1a6d8032429e5702 2013-12-06 12:32:19
before_script.1
$ composer create-project aura/cli-project --prefer-dist --stability=dev
Cannot open log file: /var/log/hhvm/error.log
HipHop Strict Warning: It is not safe to rely on the system's timezone settings. Please use the date.timezone setting, the TZ environment variable or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'UTC' for 'UTC/0.0/no DST' instead in phar://composer.phar/bin/../src/../src/Composer/Console/Application.php on line 65
Installing aura/cli-project (dev-master 92838cc6b87fbe4a484a091ce181bbe21a20b8df)
  - Installing aura/cli-project (dev-master master)
    Downloading: connection...    Downloading: 100%
Created project in /home/travis/build/auraphp/Aura.Cli_Kernel/cli-project
Loading composer repositories with package information
Installing dependencies (including require-dev)
  - Installing aura/dispatcher (dev-develop-2 55f932e)
    Downloading: 100%
  - Installing aura/cli (dev-develop-2 da40c2d)
    Downloading: 100%
  - Installing psr/log (dev-master 5144da9)
    Downloading: connection...    Downloading: 100%
  - Installing monolog/monolog (dev-master c9db00f)
    Downloading: 100%
  - Installing aura/includer (dev-develop-2 20d32c4)
    Downloading: connection...    Downloading: 100%
  - Installing aura/di (dev-develop-2 a429a80)
    Downloading: 100%
  - Installing aura/project-kernel (dev-develop-2 97d934c)
    Downloading: connection...    Downloading: 100%
  - Installing aura/cli-kernel (dev-develop-2 0fceeb6)
    Downloading: 100%
monolog/monolog suggests installing mlehner/gelf-php (Allow sending log messages to a GrayLog2 server)
monolog/monolog suggests installing ext-amqp (Allow sending log messages to an AMQP server (1.0+ required))
monolog/monolog suggests installing ext-mongo (Allow sending log messages to a MongoDB server)
monolog/monolog suggests installing doctrine/couchdb (Allow sending log messages to a CouchDB server)
monolog/monolog suggests installing raven/raven (Allow sending log messages to a Sentry server)
monolog/monolog suggests installing ruflin/elastica (Allow sending log messages to an Elastic Search server)
monolog/monolog suggests installing aws/aws-sdk-php (Allow sending log messages to AWS services like DynamoDB)
Writing lock file
Generating autoload files
before_script.2
$ rm -rf cli-project/vendor/aura/cli-kernel/*
before_script.3
$ cp -r autoload.php  cli-project/vendor/aura/cli-kernel/
before_script.4
$ cp -r composer.json cli-project/vendor/aura/cli-kernel/
before_script.5
$ cp -r config        cli-project/vendor/aura/cli-kernel/
before_script.6
$ cp -r README.md     cli-project/vendor/aura/cli-kernel/
before_script.7
$ cp -r scripts       cli-project/vendor/aura/cli-kernel/
before_script.8
$ cp -r src           cli-project/vendor/aura/cli-kernel/
before_script.9
$ cp -r tests         cli-project/vendor/aura/cli-kernel/
before_script.10
$ cd cli-project/vendor/aura/cli-kernel/tests
$ phpunit
Cannot open log file: /var/log/hhvm/error.log
PHPUnit 3.7.28 by Sebastian Bergmann.
Configuration read from /home/travis/build/auraphp/Aura.Cli_Kernel/cli-project/vendor/aura/cli-kernel/tests/phpunit.xml
HipHop Fatal error: Uncaught exception 'PharException' with message 'No phpunit/Framework/Process/TestCasethod.tpl in phar' in :
Stack trace:
The command "phpunit" exited with 1.
Done. Your build exited with 1.