`transfer` gives no additional context with verbose flag

Using 1.5.0 (2857) on Ubuntu 20.10
$ multipass launch focal -n lts
Launched: lts
$ multipass transfer -h
...
-v, --verbose Increase logging verbosity. Repeat the 'v' in the short option
$ echo "txt" > bug
$ multipass transfer -vvv bug lts:
$ multipass transfer -vvv bug lts:
(trying again to see if it tells about overwriting an existing file for example)
$ multipass transfer -vvv bug lts:/home/ubuntu
transfer failed: [sftp push] open failed: 'SFTP server: Failure'
$ multipass transfer -vvv lts:/home/ubuntu/bug /tmp

Unsure in which cases the verbose option is supposed to print something, or is it simply not working?

Reproduce the reported `multipass transfer -vvv` commands, including the failing SFTP push to `lts:/home/ubuntu`, and inspect the transfer command's verbose logging path. Compare the local-to-instance and instance-to-local cases; done means the verbose flag provides the intended additional context or its supported behavior is clearly established.

Written by the indexing model from the issue text.