I get the following error messages after installing from stable and then changing to master:
WordPress database error: [Incorrect table definition; there can be only one auto column and it must be defined as a key]
ALTER TABLE wp_h5p_tmpfiles ADD COLUMN id INT UNSIGNED NOT NULL AUTO_INCREMENT
WordPress database error: [Key column 'id' doesn't exist in table]
ALTER TABLE wp_h5p_tmpfiles ADD PRIMARY KEY (`id`)
Fix WordPress upgrade path. No error messages when upgrading!