ruby2.5-rubygem-buff-ruby_engine.x86_64: W: description-shorter-than-summary
rubygem-buff-ruby_engine.src: W: description-shorter-than-summary
The package description should be longer than the summary. be a bit more
verbose, please.

ruby2.5-rubygem-buff-ruby_engine-testsuite.x86_64: W: filename-too-long-for-joliet ruby2.5-rubygem-buff-ruby_engine-testsuite-1.0.0-bp155.2.12.x86_64.rpm
This filename is too long to fit on a joliet filesystem (limit is 64 unicode
chars).

ruby2.5-rubygem-buff-ruby_engine.x86_64: W: hidden-file-or-dir /usr/lib64/ruby/gems/2.5.0/gems/buff-ruby_engine-1.0.0/.travis.yml
The file or directory is hidden. You should see if this is normal, and delete
it from the package if not.

ruby2.5-rubygem-buff-ruby_engine.x86_64: W: version-control-internal-file /usr/lib64/ruby/gems/2.5.0/gems/buff-ruby_engine-1.0.0/.gitignore
You have included file(s) internally used by a version control system in the
package. Move these files out of the package and rebuild it.

4 packages and 0 specfiles checked; 0 errors, 5 warnings.