Loading composer repositories with package information
Installing dependencies (including require-dev) from lock file
Package operations: 89 installs, 0 updates, 0 removals
  - Installing ocramius/package-versions (1.4.0): Loading from cache
Plugin installation failed, rolling back
  - Removing ocramius/package-versions (1.4.0)

[RuntimeException]
  Could not delete /home/vagrant/code/oensys/project_test/server_side/vendor/ocramius/package-versions/src/PackageVersions: