"lost track of <n> pulled message(s)" and other warnings

[Sean H. <isy...@sn...>]

Hi, I'm using mbsync to pull a lot of email (several GB) from my gmail
account to a local maildir. It seems to be working fine, but it has
printed a number of warnings and I wanted to check that these are safe
to ignore? mbsync has stopped mid-pull with these messages:

"IMAP error: unexpected BYE response: [OVERQUOTA] Account exceeded
command or bandwidth limits." After this one I tried using the program
`trickle` to throttle mbsync's download speed, but that caused mbsync to
freeze (using no cpu or bandwidth, not giving any output) for a few
hours until I killed it. I've now put `PipelineDepth 1` in my .mbsyncrc
instead, and that seems to work just fine.

"IMAP error: unexpected BYE response: System Error" mbsync sometimes
exits with this error, it seems to continue working again fine if I just
start the command again, and I'm happy to run it in a while loop.

"Warning: lost track of 57473 pulled message(s)" is printed whenever I
restart mbsync after one of the above messages stops it, or after a
severed network connection or a ctrl-c from me stops it  (the number is
different every time).

I wanted to check whether it's ok for mbsync to be ctrl-c'd and to stop
with the above errors and just be restarted again? It won't miss any
emails, or leave any in a partial state, etc?