Attempted to install a clean version of D8 today, and I'm getting a fatal error on the 2nd step of the install (right after selecting an install profile). Here are the fatal errors...
SQLSTATE[42S02]: Base table or view not found: 1146 Table 'd8mappingdev.users'
Drupal\Core\Database\IntegrityConstraintViolationException: SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'uid' cannot be null: INSERT INTO {sessions} (sid, ssid, uid, hostname, session, timestamp) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5); Array ( [:db_insert_placeholder_0] => NLUw1Bvu4ra30CJkNaZNxVvWcsjG4U9ASUkPmkqzihY [:db_insert_placeholder_1] => [:db_insert_placeholder_2] => [:db_insert_placeholder_3] => 127.0.0.1 [:db_insert_placeholder_4] => [:db_insert_placeholder_5] => 1362021900 ) in Drupal\Core\Database\Connection->query() (line 551 of /Users/bmorrison/htdocs/d8mappingdev/core/lib/Drupal/Core/Database/Connection.php).
I was able to install a clean version of D8 a few days ago, so the error has probably been introduced since then. It doesn't make a difference which install profile I chose.
I didn't bump the priority up to critical, but if somebody else can verify, then it probably should be pushed up.