Ubuntu's rclone is 1.60.1, from 2022. In the first publish R2 answered
every upload of the first attempt "501 Not Implemented", having stored
the file each time, and the job passed because rclone's second attempt
found everything in place.
Run against a stand-in server, 1.60.1 and the current 1.75.2 make the
same requests but for one header: 1.60.1 sends "x-amz-acl: private"
with each upload and 1.75.2 sends none to Cloudflare. The publish job
now installs 1.75.2, by version and checksum.
Should an upload pass only on a retry again, the run says so in a
warning.
Emir Beganovic
f9caa25766