In snapshot (Gemfile.lock):
rspec-support (= 3.8.2)
In Gemfile:
guard-rspec (~> 4.7) was resolved to 4.7.3, which depends on
rspec (>= 2.99.0, < 4.0) was resolved to 3.8.0, which depends on
rspec-mocks (~> 3.8.0) was resolved to 3.8.1, which depends on
rspec-support (~> 3.8.0)
rspec-rails (~> 4.0) was resolved to 4.0.1, which depends on
rspec-support (~> 3.9)
When trying to upgrade