ruby2.5-rubygem-mime-types-testsuite-1.armv7hl: W: filename-too-long-for-joliet ruby2.5-rubygem-mime-types-testsuite-1-1.25.1-bp154.2.1.armv7hl.rpm
This filename is too long to fit on a joliet filesystem (limit is 64 unicode
chars).

ruby2.5-rubygem-mime-types-1.armv7hl: W: hidden-file-or-dir /usr/lib/ruby/gems/2.5.0/gems/mime-types-1.25.1/.gemtest
ruby2.5-rubygem-mime-types-1.armv7hl: W: hidden-file-or-dir /usr/lib/ruby/gems/2.5.0/gems/mime-types-1.25.1/.hoerc
ruby2.5-rubygem-mime-types-1.armv7hl: W: hidden-file-or-dir /usr/lib/ruby/gems/2.5.0/gems/mime-types-1.25.1/.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-mime-types-1.armv7hl: W: zero-length /usr/lib/ruby/gems/2.5.0/gems/mime-types-1.25.1/.gemtest
4 packages and 0 specfiles checked; 0 errors, 5 warnings.