Dbase Install error

install-debase.txt

    current directory: /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/gems/2.5.0/gems/debase-0.2.1/ext
/home/wellington/.rbenv/versions/2.5.0-dev/bin/ruby -r ./siteconf20170803-8939-zn18lm.rb extconf.rb
checking for vm_core.h... no
Makefile creation failed
**************************************************************************
No source for ruby-2.5.0 (revision 58466) provided with debase-ruby_core_source gem.
**************************************************************************
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
	--with-opt-dir
	--without-opt-dir
	--with-opt-include
	--without-opt-include=${opt-dir}/include
	--with-opt-lib
	--without-opt-lib=${opt-dir}/lib
	--with-make-prog
	--without-make-prog
	--srcdir=.
	--curdir
	--ruby=/home/wellington/.rbenv/versions/2.5.0-dev/bin/$(RUBY_BASE_NAME)
	--with-ruby-dir
	--without-ruby-dir
	--with-ruby-include=${ruby-dir}/include
	--with-ruby-lib
	--without-ruby-lib=${ruby-dir}/lib

To see why this extension failed to compile, please check the mkmf.log which can be found here:

  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/gems/2.5.0/extensions/x86_64-linux/2.5.0-static/debase-0.2.1/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/gems/2.5.0/gems/debase-0.2.1 for inspection.
Results logged to /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/gems/2.5.0/extensions/x86_64-linux/2.5.0-static/debase-0.2.1/gem_make.out

  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/2.5.0/rubygems/ext/builder.rb:92:in `run'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/2.5.0/rubygems/ext/ext_conf_builder.rb:48:in `block in build'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/2.5.0/tempfile.rb:295:in `open'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/2.5.0/rubygems/ext/ext_conf_builder.rb:31:in `build'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/2.5.0/rubygems/ext/builder.rb:164:in `block (2 levels) in build_extension'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/2.5.0/rubygems/ext/builder.rb:163:in `chdir'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/2.5.0/rubygems/ext/builder.rb:163:in `block in build_extension'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/2.5.0/monitor.rb:214:in `mon_synchronize'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/2.5.0/rubygems/ext/builder.rb:162:in `build_extension'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/2.5.0/rubygems/ext/builder.rb:201:in `block in build_extensions'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/2.5.0/rubygems/ext/builder.rb:198:in `each'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/2.5.0/rubygems/ext/builder.rb:198:in `build_extensions'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/2.5.0/rubygems/installer.rb:752:in `build_extensions'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/2.5.0/rubygems/installer.rb:304:in `install'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/gems/2.5.0/gems/bundler-1.15.3/lib/bundler/source/rubygems.rb:145:in `block in install'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/gems/2.5.0/gems/bundler-1.15.3/lib/bundler/rubygems_integration.rb:195:in `preserve_paths'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/gems/2.5.0/gems/bundler-1.15.3/lib/bundler/source/rubygems.rb:135:in `install'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/gems/2.5.0/gems/bundler-1.15.3/lib/bundler/installer/gem_installer.rb:55:in `install'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/gems/2.5.0/gems/bundler-1.15.3/lib/bundler/installer/gem_installer.rb:15:in `install_from_spec'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/gems/2.5.0/gems/bundler-1.15.3/lib/bundler/installer/parallel_installer.rb:115:in `block in worker_pool'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/gems/2.5.0/gems/bundler-1.15.3/lib/bundler/worker.rb:63:in `apply_func'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/gems/2.5.0/gems/bundler-1.15.3/lib/bundler/worker.rb:58:in `block in process_queue'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/gems/2.5.0/gems/bundler-1.15.3/lib/bundler/worker.rb:55:in `loop'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/gems/2.5.0/gems/bundler-1.15.3/lib/bundler/worker.rb:55:in `process_queue'
  /home/wellington/.rbenv/versions/2.5.0-dev/lib/ruby/gems/2.5.0/gems/bundler-1.15.3/lib/bundler/worker.rb:89:in `block (2 levels) in create_threads'

An error occurred while installing debase (0.2.1), and Bundler cannot continue.
Make sure that `gem install debase -v '0.2.1'` succeeds before bundling.

In Gemfile:
  debase