Hey,
I want to request the addition of a setting to change the pytest error message. E.g:

# Current message
E       Failed: Timeout >300.0s

# What would be helpful in my context
E       [pytest-timeout] For some reason this test is hanging: Timeout >300.0s

I work on a project made of plugins where the CI is quite complex and often changes.

The pytest-timeout was introduced by the CI team and some test failed due to timeout on the plugin I was looking at.
It took some time to figure out that this was a plugin that was introduced, and a more explicit message would have been helpful.

I can submit a PR if that's ok.