railsの新規ファイル作成時にエラーが出てしまう

前提・実現したいこと

今どっとインストールでrails学び中でrails の新しいファイルを作ろうと思っています。rubyの実行まではうまくいっていましたが、railsをインストールするときにruby2.5以上が必要と言われインストールしました。そのあとrails new myapp を実行したら
An error occurred while installing sassc (2.2.1), and Bundler cannot
continue.
Make sure that gem install sassc -v '2.2.1' --source 'https://rubygems.org/' succeeds before bundling.
と出てしまいファイル作成ができません
ruby 2.6.5
rails 6.0.1
bündle 2.0.2

発生している問題・エラーメッセージ

An error occurred while installing sassc (2.2.1), and Bundler cannot
continue.
Make sure that gem install sassc -v '2.2.1' --source 'https://rubygems.org/' succeeds before bundling.
An error occurred while installing sassc (2.2.1), and Bundler cannot
continue.
Make sure that gem install sassc -v '2.2.1' --source 'https://rubygems.org/' succeeds before bundling.

該当のソースコード

ruby
1rails new myapp
2       exist
3   identical  README.md
4   identical  Rakefile
5   identical  .ruby-version
6   identical  config.ru
7    conflict  .gitignore
8Overwrite /home/vagrant/myapp/.gitignore? (enter "h" for help) [Ynaqdhm]
9       force  .gitignore
10   identical  Gemfile
11         run  git init from "."
12Reinitialized existing Git repository in /home/vagrant/myapp/.git/
13   identical  package.json
14       exist  app
15   identical  app/assets/config/manifest.js
16   identical  app/assets/stylesheets/application.css
17   identical  app/channels/application_cable/channel.rb
18   identical  app/channels/application_cable/connection.rb
19   identical  app/controllers/application_controller.rb
20   identical  app/helpers/application_helper.rb
21   identical  app/javascript/channels/consumer.js
22   identical  app/javascript/channels/index.js
23   identical  app/javascript/packs/application.js
24   identical  app/jobs/application_job.rb
25   identical  app/mailers/application_mailer.rb
26   identical  app/models/application_record.rb
27   identical  app/views/layouts/application.html.erb
28   identical  app/views/layouts/mailer.html.erb
29   identical  app/views/layouts/mailer.text.erb
30   identical  app/assets/images/.keep
31   identical  app/controllers/concerns/.keep
32   identical  app/models/concerns/.keep
33       exist  bin
34   identical  bin/rails
35   identical  bin/rake
36   identical  bin/setup
37   identical  bin/yarn
38       exist  config
39   identical  config/routes.rb
40   identical  config/application.rb
41   identical  config/environment.rb
42   identical  config/cable.yml
43   identical  config/puma.rb
44   identical  config/spring.rb
45   identical  config/storage.yml
46       exist  config/environments
47   identical  config/environments/development.rb
48   identical  config/environments/production.rb
49   identical  config/environments/test.rb
50       exist  config/initializers
51   identical  config/initializers/application_controller_renderer.rb
52   identical  config/initializers/assets.rb
53   identical  config/initializers/backtrace_silencers.rb
54   identical  config/initializers/content_security_policy.rb
55   identical  config/initializers/cookies_serializer.rb
56      create  config/initializers/cors.rb
57   identical  config/initializers/filter_parameter_logging.rb
58   identical  config/initializers/inflections.rb
59   identical  config/initializers/mime_types.rb
60      create  config/initializers/new_framework_defaults_6_0.rb
61   identical  config/initializers/wrap_parameters.rb
62       exist  config/locales
63   identical  config/locales/en.yml
64      append  .gitignore
65   identical  config/boot.rb
66   identical  config/database.yml
67       exist  db
68   identical  db/seeds.rb
69       exist  lib
70       exist  lib/tasks
71   identical  lib/tasks/.keep
72       exist  lib/assets
73   identical  lib/assets/.keep
74       exist  log
75   identical  log/.keep
76       exist  public
77   identical  public/404.html
78   identical  public/422.html
79   identical  public/500.html
80   identical  public/apple-touch-icon-precomposed.png
81   identical  public/apple-touch-icon.png
82   identical  public/favicon.ico
83   identical  public/robots.txt
84       exist  tmp
85   identical  tmp/.keep
86       exist  tmp/pids
87   identical  tmp/pids/.keep
88       exist  tmp/cache
89       exist  tmp/cache/assets
90       exist  vendor
91   identical  vendor/.keep
92       exist  test/fixtures
93   identical  test/fixtures/.keep
94       exist  test/fixtures/files
95   identical  test/fixtures/files/.keep
96       exist  test/controllers
97   identical  test/controllers/.keep
98       exist  test/mailers
99   identical  test/mailers/.keep
100       exist  test/models
101   identical  test/models/.keep
102       exist  test/helpers
103   identical  test/helpers/.keep
104       exist  test/integration
105   identical  test/integration/.keep
106   identical  test/channels/application_cable/connection_test.rb
107   identical  test/test_helper.rb
108       exist  test/system
109   identical  test/system/.keep
110   identical  test/application_system_test_case.rb
111       exist  storage
112   identical  storage/.keep
113       exist  tmp/storage
114   identical  tmp/storage/.keep
115      remove  config/initializers/cors.rb
116      remove  config/initializers/new_framework_defaults_6_0.rb
117         run  bundle install
118The dependency tzinfo-data (>= 0) will be unused by any of the platforms Bundler is installing for. Bundler is installing for ruby but the dependency is only for x86-mingw32, x86-mswin32, x64-mingw32, java. To add those platforms to the bundle, run `bundle lock --add-platform x86-mingw32 x86-mswin32 x64-mingw32 java`.
119Fetching gem metadata from https://rubygems.org/............
120Fetching gem metadata from https://rubygems.org/.
121Resolving dependencies.........
122Using rake 13.0.1
123Using concurrent-ruby 1.1.5
124Using i18n 1.7.0
125Using minitest 5.13.0
126Using thread_safe 0.3.6
127Using tzinfo 1.2.5
128Using zeitwerk 2.2.1
129Using activesupport 6.0.1
130Using builder 3.2.3
131Using erubi 1.9.0
132Using mini_portile2 2.4.0
133Using nokogiri 1.10.5
134Using rails-dom-testing 2.0.3
135Using crass 1.0.5
136Using loofah 2.3.1
137Using rails-html-sanitizer 1.3.0
138Using actionview 6.0.1
139Using rack 2.0.7
140Using rack-test 1.1.0
141Using actionpack 6.0.1
142Using nio4r 2.5.2
143Using websocket-extensions 0.1.4
144Using websocket-driver 0.7.1
145Using actioncable 6.0.1
146Using globalid 0.4.2
147Using activejob 6.0.1
148Using activemodel 6.0.1
149Using activerecord 6.0.1
150Using mimemagic 0.3.3
151Using marcel 0.3.3
152Using activestorage 6.0.1
153Using mini_mime 1.0.2
154Using mail 2.7.1
155Using actionmailbox 6.0.1
156Using actionmailer 6.0.1
157Using actiontext 6.0.1
158Using public_suffix 4.0.1
159Using addressable 2.7.0
160Using bindex 0.8.1
161Using msgpack 1.3.1
162Using bootsnap 1.4.5
163Using bundler 2.0.2
164Using byebug 11.0.1
165Using regexp_parser 1.6.0
166Using xpath 3.2.0
167Using capybara 3.29.0
168Using childprocess 3.0.0
169Using ffi 1.11.2
170Using jbuilder 2.9.1
171Using rb-fsevent 0.10.3
172Using rb-inotify 0.10.0
173Using ruby_dep 1.5.0
174Using listen 3.1.5
175Using method_source 0.9.2
176Using puma 4.3.0
177Using rack-proxy 0.6.5
178Using thor 0.20.3
179Using railties 6.0.1
180Using sprockets 4.0.0
181Using sprockets-rails 3.2.1
182Using rails 6.0.1
183Using rubyzip 2.0.0
184Fetching sassc 2.2.1
185Installing sassc 2.2.1 with native extensions
186Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
187
188current directory:
189/home/vagrant/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/sassc-2.2.1/ext
190/home/vagrant/.rbenv/versions/2.6.5/bin/ruby -I
191/home/vagrant/.rbenv/versions/2.6.5/lib/ruby/2.6.0 -r
192./siteconf20191117-26632-j0w1qa.rb extconf.rb
193creating Makefile
194
195current directory:
196/home/vagrant/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/sassc-2.2.1/ext
197make "DESTDIR=" clean
198
199current directory:
200/home/vagrant/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/sassc-2.2.1/ext
201make "DESTDIR="
202compiling ./libsass/src/ast_sel_unify.cpp
203cc1plus: error: unrecognized command line option "-std=c++11"
204cc1plus: error: unrecognized command line option "-flto"
205make: *** [ast_sel_unify.o] エラー 1
206
207make failed, exit code 2
208
209Gem files will remain installed in
210/home/vagrant/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/sassc-2.2.1 for
211inspection.
212Results logged to
213/home/vagrant/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/extensions/x86_64-linux/2.6.0/sassc-2.2.1/gem_make.out
214
215An error occurred while installing sassc (2.2.1), and Bundler cannot
216continue.
217Make sure that `gem install sassc -v '2.2.1' --source
218'https://rubygems.org/'` succeeds before bundling.
219
220In Gemfile:
221  sass-rails was resolved to 6.0.0, which depends on
222    sassc-rails was resolved to 2.1.2, which depends on
223      sassc
224         run  bundle binstubs bundler
225Could not find gem 'sass-rails (>= 6)' in any of the gem sources listed in
226your Gemfile.
227         run  bundle exec spring binstub --all
228Could not find gem 'sass-rails (>= 6)' in any of the gem sources listed in your Gemfile.
229Run `bundle install` to install missing gems.
230       rails  webpacker:install
231Could not find gem 'sass-rails (>= 6)' in any of the gem sources listed in your Gemfile.
232Run `bundle install` to install missing gems.