picocom v3.1

port is        : /dev/ttyACM0
flowcontrol    : none
baudrate is    : 1500000
parity is      : none
databits are   : 8
stopbits are   : 1
escape is      : C-a
local echo is  : no
noinit is      : no
noreset is     : no
hangup is      : no
nolock is      : no
send_cmd is    : sz -vv
receive_cmd is : rz -vv -E
imap is        : 
omap is        : 
emap is        : crcrlf,delbs,
logfile is     : none
initstring     : none
exit_after is  : not set
exit is        : no

Type [C-a] [C-h] to see available commands
Terminal ready
[  418.354373] (sd-umount)[1977]: Failed to unmount /run/shutdown/mounts/9de811a70d4bb8ad: Device or resource busy
[  418.363014] systemd-shutdown[1]: Unable to finalize remaining file systems, loop devices, ignoring.
[  418.611651] reboot: Power down