Passing rclone arguments as 'option'

[max-dw-i]

I need to pass arguments to rclone. Here is the backend config:

backends:
    cloud:
        type: rclone
        path: cloud:backup
        options:
            backup:
                option:
                  - rclone.args='serve restic --stdio --verbose'

When I run autorestic backup -a, I get an error:

rclone: Error: unknown command "serve restic --stdio --verbose" for "rclone"
rclone: Run 'rclone --help' for usage.
rclone: You could use 'rclone selfupdate' to get latest features.
rclone: 
rclone: 2023/12/01 22:25:46 Fatal error: unknown command "serve restic --stdio --verbose" for "rclone"
Fatal: unable to open repository at rclone:cloud:backup: error talking HTTP to rclone: exit status 1

If I run the command without options, everything is OK. I tried different quotes, quotes around the whole string, >/>- after option and cannot make it work.
Here's the corresponding restic command:

restic -o rclone.args="serve restic --stdio --verbose" -r rclone:cloud:backup

What am I doing wrong?

[max-dw-i]

For the curious, you do not need single quotes at all. So it's going to be:

option:
    - rclone.args=serve restic --stdio --verbose