==> local-test-catalog-db-01: Machine booted and ready!
GuestAdditions versions on your host (4.3.20) and guest (4.3.14) do not match.
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
Package gcc-4.8.2-16.2.el7_0.x86_64 already installed and latest version
Package 1:make-3.82-21.el7.x86_64 already installed and latest version
Package 4:perl-5.16.3-283.el7.x86_64 already installed and latest version
Nothing to do
Copy iso file /Applications/VirtualBox.app/Contents/MacOS/VBoxGuestAdditions.iso into the box /tmp/VBoxGuestAdditions.iso
mount: /dev/loop0 is write-protected, mounting read-only
Installing Virtualbox Guest Additions 4.3.20 - guest version is 4.3.14
Verifying archive integrity... All good.
Uncompressing VirtualBox 4.3.20 Guest Additions for Linux............
VirtualBox Guest Additions installer
Removing installed version 4.3.20 of VirtualBox Guest Additions...
Copying additional installer modules ...
Installing additional modules ...
Removing existing VirtualBox non-DKMS kernel modules[ OK ]
Building the VirtualBox Guest Additions kernel modules
Building the main Guest Additions module[ OK ]