Conservative Leadership battle enters second week

The Tory leadership hustings saw candidates arriving at a London hotel, with Boris Johnson avoiding media questions by using a side entrance. Johnson, the frontrunner, is criticized for avoiding a TV debate but plans to participate in a later one. Rivals reject the idea of a coronation for Johnson, advocating for a proper leadership process. Past mistakes, like Theresa May's unchallenged leadership win, are highlighted. Candidates delivered speeches, with Boris Johnson and Jeremy Hunt making strong impressions. The event concluded with candidates expressing optimism, despite Johnson's discreet exit.

What warning did Mr. Javid give to the activists regarding past leadership elections?

What was the atmosphere like when Boris Johnson entered the room according to the text?