All reports of debhelper-compat-file-contains-multiple-levels for the archive. The extended description of this tag is:
The debian/compat file appears to contain multiple compatibility levels.
This was likely due to the use of >> instead of > when updating the level.
Please update the file to specify a single level.
Refer to the debhelper(7) manual page for details.
This tag has not been emitted in any package tested by Lintian.