Segmentation fault 11

Trying to perform a test on testing-fundamentals-write-an-integration-test, but this is the result. Any suggestions? I could run tests on the projects before.

rspec spec/models/person_spec.rb 
/Users/chris/.rvm/gems/ruby-2.4.2/gems/activesupport-4.1.6/lib/active_support/core_ext/numeric/conversions.rb:121: warning: constant ::Fixnum is deprecated
/Users/chris/.rvm/gems/ruby-2.4.2/gems/activesupport-4.1.6/lib/active_support/core_ext/numeric/conversions.rb:121: warning: constant ::Bignum is deprecated
Segmentation fault: 11

Running rake gives me this:

rake
/Users/chris/.rvm/rubies/ruby-2.4.2/bin/ruby -I/Users/chris/.rvm/gems/ruby-2.4.2/gems/rspec-core-3.7.0/lib:/Users/chris/.rvm/gems/ruby-2.4.2/gems/rspec-support-3.7.0/lib /Users/chris/.rvm/gems/ruby-2.4.2/gems/rspec-core-3.7.0/exe/rspec --pattern spec/\*\*\{,/\*/\*\*\}/\*_spec.rb
/Users/chris/.rvm/gems/ruby-2.4.2/gems/activesupport-4.1.6/lib/active_support/core_ext/numeric/conversions.rb:121: warning: constant ::Fixnum is deprecated
/Users/chris/.rvm/gems/ruby-2.4.2/gems/activesupport-4.1.6/lib/active_support/core_ext/numeric/conversions.rb:121: warning: constant ::Bignum is deprecated
/Users/chris/.rvm/rubies/ruby-2.4.2/bin/ruby -I/Users/chris/.rvm/gems/ruby-2.4.2/gems/rspec-core-3.7.0/lib:/Users/chris/.rvm/gems/ruby-2.4.2/gems/rspec-support-3.7.0/lib /Users/chris/.rvm/gems/ruby-2.4.2/gems/rspec-core-3.7.0/exe/rspec --pattern spec/\*\*\{,/\*/\*\*\}/\*_spec.rb failed