[filmor]

Rustler wasn't properly forward compatible (only with regard to the build process, a compiled library will work just fine on any newer OTP) until 0.29. They are using 0.22, upgrading Rustler will be enough to get rid of this issue for all future OTP versions.

[sodapopcan]

Thank you for the full story here as I just gave the issue a cursory glance. As someone quite ingrained in Elixir, I see an issue referencing specific patch versions of Elixir and OTP and immediately understand it's very specifically targeting that specific Elixir/OTP combo. But depr brings up a good point that not everyone is immediately going to understand this, especially newcommers to the language and it’s generally hard not to just read the headline.