Travis CI: No Rakefile found (looking for: rakefile, Rakefile, rakefile.rb, Rakefile.rb)


The very cryptic error message in Travis CI.:

No Rakefile found (looking for: rakefile, Rakefile, rakefile.rb, Rakefile.rb)

handlet's is a problem with incorrect indentation in the travis.yml file:

matrix:
  include:
    - php: 5.6
      env:
        - SYMFONY_VERSION='3.4.*'

A space in the line – SYMFONY_VERSION = ’ 3.4. *.’ and this little revealing error.