ruby2.5-rubygem-raindrops.armv7hl: W: version-control-internal-file /usr/lib/ruby/gems/2.5.0/gems/raindrops-0.19.0/.gitignore
ruby2.5-rubygem-raindrops.armv7hl: W: version-control-internal-file /usr/lib/ruby/gems/2.5.0/gems/raindrops-0.19.0/archive/.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.

ruby2.5-rubygem-raindrops.armv7hl: W: zero-length /usr/lib/ruby/gems/2.5.0/extensions/armv7hl-linux/2.5.0/raindrops-0.19.0/gem.build_complete
ruby2.5-rubygem-raindrops.armv7hl: W: zero-length /usr/lib/ruby/gems/2.5.0/gems/raindrops-0.19.0/ext/raindrops/.sitearchdir.time
4 packages and 0 specfiles checked; 0 errors, 4 warnings.