IMHO the main part is honesty in "advertising". If a project README promises a production-ready product I'm looking at it differently than at one that says "my

IMHO the main part is honesty in "advertising". If a project README promises a production-ready product I'm looking at it differently than at one that says "my Rust learning project: a chess client". I don't think in most environments a clearly toy project in a different language is going to be held against you in any way. IMHO being honest also covers the "FOSS software should only be published..." point - I've found random snippets of "outdated" code by others sometimes extremely useful, so I try to apply similar rules to my own code. (some exception for security-critical code personally, I won't publish that if I know it is sub-par)