Codecless stdout output broken with twitter input

[tylerfontaine]

• Version: 5.2
• Operating System: os x / centos
• Config File (if you have sensitive info, please remove it):

input {
  twitter {
    consumer_key => 'XXX'
    consumer_secret => 'XXX'
    oauth_token => 'XXX'
    oauth_token_secret => 'XXX'
    keywords => ["test"]
    full_tweet => true
}
}

output {
  stdout { }
}

With this config, this is all that gets put to std out:

2017-02-13T21:20:07.000Z %{host} %{message}
2017-02-13T21:20:07.000Z %{host} %{message}
2017-02-13T21:20:07.000Z %{host} %{message}
2017-02-13T21:20:07.000Z %{host} %{message}
2017-02-13T21:20:07.000Z %{host} %{message}
2017-02-13T21:20:08.000Z %{host} %{message}
2017-02-13T21:20:07.000Z %{host} %{message}
2017-02-13T21:20:08.000Z %{host} %{message}
2017-02-13T21:20:08.000Z %{host} %{message}
2017-02-13T21:20:08.000Z %{host} %{message}
2017-02-13T21:20:08.000Z %{host} %{message}
2017-02-13T21:20:08.000Z %{host} %{message}

When full_tweet => false is set, stdout similarly munged, but at least the tweet comes through:

2017-02-13T21:24:02.000Z %{host} pretty sure i failed my math test but fuck man
2017-02-13T21:24:03.000Z %{host} The cardio I just did felt like the damn pacer test & I feel like I might die

If you add codec => rubydebug to the output, both conditions output as expected.

I admit, I wasn't sure if this should go here or to the stdout output. :D Let me know if I should open it there instead.

[guyboertje]

2017-02-13T21:20:08.000Z %{host} %{message} is an Event rendered as a string with field interpolation. In the example shown, when the Event does not have host or message fields the interpolation fails and the interpolation source, e.g. %{host} is shown instead of the interpolation results. With full_tweet => true set, fields other than message are set and when it is set to false then the tweet becomes the message field contents.