I recently updated Drush and after doing so I can no longer run Drush Update. Everytime I try I get the error:

Update information last refreshed: Never
No code updates available.

I removed and reinstalled drush. I manually updated from Drupal Core 8.0.1 to 8.0.3. Still no change. When I run the Available Updates report I get the error

Failed to get available update data for 8 projects.

I have rebuilt the cache using drush cache-clear and drush cache-rebuild.

Output from drush status:

Drupal version : 8.0.3
Site URI : http://default
Database driver : mysql
Database hostname : localhost
Database port : 3306
Database username : root
Database name : drupal8
Drupal bootstrap : Successful
Drupal user :
Default theme : bartik
Administration theme : seven
PHP configuration : /etc/php5/cli/php.ini
PHP OS : Linux
Drush script : /usr/local/bin/drush
Drush version : 8.0.3
Drush temp directory : /tmp
Drush configuration :
Drush alias files :
Install profile : standard
Drupal root : /var/www/html/drupal
Drupal Settings File : sites/default/settings.php
Site path : sites/default
File directory path : sites/default/files
Temporary file directory path : /tmp