Failing GrapeLogging::Formatters::Rails#call test

[lucaskanashiro]

I ran the test suite using ruby2.5 and I got one failure:

Failures:

  1) GrapeLogging::Formatters::Rails#call exception data returns a string with a backtrace
     Failure/Error: expect(lines[1]).to include 'grape_logging'
       expected "\t/usr/lib/ruby/vendor_ruby/rspec/core/example.rb:254:in `instance_exec'" to include "grape_logging"
     # ./spec/lib/grape_logging/formatters/rails_spec.rb:40:in `block (4 levels) in <top (required)>'

Have you ever faced this issue? I saw that the tests are passing in travis but with ruby2.3