It's hard to take a project seriously if it focuses so much on the language it's written in. As a user, I don't care. Show me the results (bug tracker with low rate of issues), that's what I care about. Whether you program in Rust or C or Java or assembly or PHP.
As a potential user of an open source project, I care a fair bit what language it is implemented in. As an open source project, I preffer projects in languages and ecosystems I am familair and comfortable with. I may need to fix bugs, add features, or otherwise make contributions back to the project, and thus I am more likely to pick a solution in a language I am comfortable with than in a language I am not as comfortable with, given my other needs and priorities are met.