How to figure out what went wrong on circleci? Where are detailed logs?

        glibc: Cleaning temporary build dirs...
        % Total % Received % Xferd Average Speed Time Time Time Current
        Dload Upload Total Spent Left Speed

0 0 0 0 0 0 0 0 --:–:-- --:–:-- --:–:-- 0
curl: (22) The requested URL returned error: 404 Not Found

So, it’s not clear what’s wrong and what’s to change.
Where are detailed logs where I can see the url requested by curl?

Could you send us a link to the build?

/gh/makorne/alpine-pkg-glibc/33

And how to delete unneeded builds?

Thank you for the build.

There is no way to delete or archive old builds, but that sounds like a very useful feature!
Could you suggest it on our feature requests forum?

As for your build, it looks like the error is happening inside the docker container.

So unless your docker container emits output to the console, we won’t see it.

I suggest you set it up to log to the console, or SSH into the build and debug manually with docker logs command:

Best, Zak