Running the test suite fails because your installation has failed. The install script should generate a `firedrake-install.log` file. That is what we need, so please send us that.
Note that running the install script again after a failed attempt could be problematic. What you should do is delete and remove the entire `firedrake` directory from the failed installation and rerun the installation. Once that supposedly fails, send us the `.log` file.
Best regards,
- Thomas