Use txt instead of json, since the json object does not seem to be updated anymore

7 jobs for master in 3 minutes and 24 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Syntax
passed #1668
ruby
jruby_1.7

00:00:41

passed #1669
ruby
jruby_9.1

00:02:29

passed #1664
ruby
ruby_2.1

00:00:41

passed #1665
ruby
ruby_2.2

00:01:19

passed #1666
ruby
ruby_2.3

00:01:23

passed #1667
ruby
ruby_2.4

00:02:37

 
  Linting
passed #1670
ruby
rubocop

00:00:47