Hello, nginx seems to install correctly for me. Based on your logs, it seems that another process has already binded port 80 when you are trying to install nginx.
nginx-full postinst script can't start nginx since the port is binded and fails. This is expected behaviour. Could check that nobody has binded :80 with `netcat -ntpl` and try to install nginx again? -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]

