incompatible character encodings: UTF-8 and ASCII-8BIT
(Encoding::CompatibilityError)
If you receive this error when running vagrant up, even after
vagrant destroy, use VirtualBox to see if the VM still exists.
If so, delete it from within VirtualBox.
$ VBoxManage list vms
This can occur after deleting the project’s .vagrant sub-folder
(e.g. through git clean), whilst there is still an activate
Vagrant instance. Web searches suggest there are other scenarios that
result in a similarly confusing error message.