WIP: A more captivating error message when genny_core exits non-zero

[wqian94]

Jira Ticket: None

Whats Changed

Add a more captivating error message for when genny_core returns a non-zero exit status code.

Patch Testing Results

N/A

[thessem]

I'm actually happy to accept this provided:

• Is not being able to find the stack-traces a real problem people are seeing?
• Does this look okay on standard terminals with light backgrounds?
• We cannot use Mario in an open source project given how litigious Nintendo can get about their trademarks.

If this doesn't look like it's going to go anywhere, I'd appreciate this PR being closed or moved to draft. Thanks, and let's a go

[wqian94]

These are excellent questions. I personally find this useful, but I'll move the PR into draft mode for now.

[wqian94]

(Update on one of the above points): The colors seem to render fine on a light background. It's really more of how the terminal's color palette is set up, since colors are highly customizable. Tested mainly on a bunch of built-in palettes in gnome-terminal, though.