default artifact name violates upload-artifact rules and creates confusing failures

[night199uk]

The default behavior to upload an artifact appends the arch to the artifact name.

When arch is the very standard x86_64, the underscore violates the upload-artifact rules and the artifact upload will fail.

It is also not immediately obvious that this plugin will automatically try to upload artifacts on its own; so it took me a long time to figure out where the additional arch was coming from in my artifact name to disable artifact-upload from this plugin.

[night199uk]

Mea culpa, I was using the old v6.1 version... need to verify if this is still the case with v6.8: however arch x86_64 still validates the artifact naming rules, so I assume so.

[bbhtt]

When arch is the very standard x86_64, the underscore violates the upload-artifact rules and the artifact upload will fail.

what rule is this and where is the log for the failure?