GitHub web-hook ignored for past 8 hours

8 hours ago GitHub webhooks stopped triggering Travis builds for my app:
https://travis-ci.org/debrief/debrief/builds

I can see from the GitHub repo webhooks page that the events are being sent to Travis, I get a 204 response back.

Since 8 hours ago there should have been around 30 Travis builds, but none have happened.

Can anyone suggest further debugging, or something to trigger the builds?

Got it. I had a badly formatted instruction in my .travis.yml file.

A line on the before_script: block was missing the - character at the start.

I discovered the problem by switching on Enable build config validation in the Travis options. It indicated that for the past 8 hours the .travis.yml couldn’t be parsed.

Builds now running.