emacs tramp debug

( ~ )  >>
16:13:28.512076 tramp-process-one-action (5) # Looking for regexp "\(.*ogin\( .*\)?: *\)\'" from remote shell
16:13:28.513287 tramp-get-connection-property (7) # check-remote-echo nil
16:13:28.514502 tramp-get-connection-property (7) # check-remote-echo nil
16:13:28.516121 tramp-process-one-action (5) # Looking for regexp "\(^.*\([pP]assword\|[pP]assphrase\).*:^@? *\)\'" from remote shell
16:13:28.517357 tramp-get-connection-property (7) # check-remote-echo nil
16:13:28.518495 tramp-get-connection-property (7) # check-remote-echo nil
16:13:28.519763 tramp-process-one-action (5) # Looking for regexp "\(^.*\(Connection \(?:\(?:clo\|refu\)sed\)\|Host key verification failed\.\|Login \(?:[Ii]ncorrect\)\|N\(?:ame or service not known\|o supported authentication methods left to try!\)\|Permission denied\|\(?:Sorry, try again\|Timeout, server not responding\)\.\).*\|^.*\(Received signal [0-9]+\).*\)\'" from remote shell
16:13:28.520991 tramp-get-connection-property (7) # check-remote-echo nil
16:13:28.521881 tramp-get-connection-property (7) # check-remote-echo nil
16:13:28.522812 tramp-process-one-action (5) # Looking for regexp "\(^[^#$%>
]*[#$%>] *\)\'" from remote shell
16:13:28.523700 tramp-get-connection-property (7) # check-remote-echo nil
16:13:28.524713 tramp-get-connection-property (7) # check-remote-echo nil
16:13:28.525543 tramp-process-one-action (5) # Looking for regexp "\(\(?:^\|
\)[^#$%>
]*#?[#$%>] *\(\[[0-9;]*[a-zA-Z] *\)*\)\'" from remote shell
16:13:28.526398 tramp-get-connection-property (7) # check-remote-echo nil
16:13:28.527324 tramp-get-connection-property (7) # check-remote-echo nil
16:13:28.528676 tramp-process-one-action (5) # Looking for regexp "\(\(Are you sure you want to continue connecting (yes/no)\?\)\s-*\)\'" from remote shell
16:13:28.529560 tramp-get-connection-property (7) # check-remote-echo nil
16:13:28.530493 tramp-get-connection-property (7) # check-remote-echo nil
16:13:28.531341 tramp-process-one-action (5) # Looking for regexp "\(\(\(?:Store key in cache\? (y/\|Update cached key\? (y/n, Return cancels connectio\)n)\)\s-*\)\'" from remote shell
16:13:28.532202 tramp-get-connection-property (7) # check-remote-echo nil
16:13:28.533067 tramp-get-connection-property (7) # check-remote-echo nil
16:13:28.533966 tramp-process-one-action (5) # Looking for regexp "\(\(TERM = (.*)\|Terminal type\? \[.*\]\)\s-*\)\'" from remote shell
16:13:28.534860 tramp-get-connection-property (7) # check-remote-echo nil
16:13:28.535683 tramp-get-connection-property (7) # check-remote-echo nil
16:13:28.536421 tramp-process-one-action (5) # Looking for regexp "\(\)\'" from remote shell
16:13:28.537323 tramp-get-connection-property (7) # check-remote-echo nil
16:13:28.538174 tramp-get-connection-property (7) # check-remote-echo nil
16:13:28.539004 tramp-process-one-action (5) # Call `tramp-action-process-alive'
16:13:28.539909 tramp-accept-process-output (10) # *tramp/su root@localhost* run
16:13:28.683211 tramp-accept-process-output (3) # Opening connection for root@localhost using su...done
16:13:28.683989 tramp-file-name-handler (1) # Interrupt received in operation (file-exists-p /su:root@localhost:)