src:libguestfs ERROR: Uploading artifacts to coordinator... too large archive

Hi,

I added a debian/salsa-ci.yml to my fork of src:libguestfs but when building it I a failure with this at the end of the log:

Uploading artifacts...
/builds/josch/libguestfs/debian/output/: found 13687 matching files 
ERROR: Uploading artifacts to coordinator... too large archive  id=413133 responseStatus=413 Request Entity Too Large status=413 Request Entity Too Large token=QgMuRXyQ
FATAL: too large                                   
ERROR: Job failed: exit code 1

Full log: https://salsa.debian.org/josch/libguestfs/-/jobs/413133

I have a couple of questions:

1. What is the maximum allowed size?
2. Could the error message be enhanced to indicate the maximum allowed size and the size of the artifacts?
3. Is it possible to bump these kind of limits on a per-project basis?