Check Drone CI

[nlohmann]

Description

Drone CI jobs do not finish.

Reproduction steps

Check any of the latest PRs.

Expected vs. actual results

Drone CI job completes.

Minimal code example

N/A

Error messages

N/A

Compiler and operating system

Library version

develop

Validation

• The bug also occurs if the latest version from the develop branch is used.
• I can successfully compile and run the unit tests.

[barcode]

@nlohmann is it possible to help with this?

[nlohmann]

Yes: find out whether the service at Drone is discontinued, and maybe search if there is an alternative CI provider that offers ARM builds.

[barcode]

I found something about this in the drone Slack channel:

it has been a challenge to keep [cloud.drone.io](http://cloud.drone.io/) stable in recent weeks/months, especially for the arm-based builds
[...]
this is a known issue at the moment, we have a ticket open with our hosting provider
currently there is no ETA

I asked for an update and will write here when i a reply.

For other CI providers: it seems Travis is supporting arm64 (article, doc).

[barcode]

@nlohmann If travis is active for this project, i could try to add a travis job building for ARM64.

[nlohmann]

We got rid of Travis a while ago (#3087) as their open source support of 25000 credits is not sufficient for us.

[barcode]

OK. I guess the 6k min / month of circleci will not be enough as well...

I will take a look at a few more and put my results here

[barcode]

@nlohmann I found cirrus-ci and did a small test. The test ran on an arm64 node. For open source projects there is no minute limit. I think the only limit is the number of concurrent jobs.

If you don't see a problem with this ci and enable it for the repo I can add a config as part of my fix ci PR.

[nlohmann]

@barcode Awesome!